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  1. #1
    Active Member One Ring
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    Thinking of buying an RSs4. Does it have carbon problems

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    I too, am also thinking of trading my gorgeous 06 Avant S4 (35,000 miles) for an 07 RS4. How do I know if this RS4 has a carbon issue? The dealer wants $17,500 and my car. The RS4 has 30,000 miles and is Audi certified. I tried it but was not able to open it up. It did not seem to have much more power than mine but I didn't rev it beyond 4500 rpm. It did not break down, but it smoked when it was started. A lot of good looks, but not a lot of improvement. Should I wait and buy a 2011 S4 V6T (which is considerably bigger)? I must say that I LOVE the looks of the RS4. I've never seen anything I like the looks of like that. I'm 64 and I've had a lot of nice cars including 3 S4s.

  2. #2
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    Smoke on startup not a good sign unless ur an 800hp Supra, deff not for a newerRs-4. Personally with all the issues guys are having and the fact Audi stands behind their warrenty(around 100 miles behind it) and AOA doesn't givea crap and has not issued a recall I would pass and go with the S4V6T. People on here have spent 2-4 grand to have their cars desludged and it popped back up in months. One guys car was barely putting out 250hp due to sludge. The way Audi handles their warrenty and AOA's response to this situation ensures I never buy a new or CPO Audi.

  3. #3
    Veteran Member Four Rings awdjunkies's Avatar
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    From what I read it isn't tied to certain VINs or certain number of RS4s. The best thing to look for when buying used is will you be warranty'd/covered if and when this happens. I'd buy the new S4-V6T

  4. #4
    Veteran Member Three Rings
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    It will certainly have carbon problems... there has been nothing done to fix the root cause by Audi that I know of. Even with 52K mi on mine and never been cleaned (yet), it is still a great car, just mising the upper RPM torque (and I realllllly miss that). Depending on the dealer you may have luck getting them cleaned though. You have to go >4500 to get the RS4 motors love.... that is where the fun is :). RE the V6T, I dunno, they are really different cars IMO...

  5. #5
    Veteran Member Four Rings
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    Does Dieppe have this RS4? There is only 1 or 2 other RS4's in Atlantic Canada..... I believe their is an AVUS (silver) in st/saint john

    All RS4s have/will have carbon deposits on the valves and inlets. This is due to the poor design of the direct-injection.

    Quote Originally Posted by awdjunkies View Post
    From what I read it isn't tied to certain VINs or certain number of RS4s. The best thing to look for when buying used is will you be warranty'd/covered if and when this happens. I'd buy the new S4-V6T
    Doesn't the S4-V6T have FSI? If it does, the carbon monster will get to it soon enough....
    2007 Audi RS4 - Daytona Grey - Original Owner

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  6. #6
    Veteran Member Three Rings
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    Yep, V6T has FSI to. I think FSI is pretty common in Audi motors now... and all of them are having CB issues, my dealer said they are doing the cleanings a lot, once it gets past some point that I have not yet reached (not running?).

  7. #7
    Active Member One Ring
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    This RS4 is at Audi lauzon in Montreal. You can see it on their web site. I have bought 4 Audis from them and I like them. How is your RS4??

  8. #8
    Veteran Member Four Rings
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    I love my RS4. I can definitely feel a power loss (carbon build-up I'm assuming) but it still performs and handles very well. Not to mention, everyone's head turns when I drive around Halifax! I have even had a swarm of 3 cop cars when I was parked just so they could have a look. Nothing like hearing "Everyone at the station loves your car" from a couple of police officers.....

    Another thing you should look for is the dreaded DRC failure. The closest dealer that is authorized to repair/replace the DRC are in Quebec and Ontario (none in Atlantic Canada). Basically, DRC failure is the result of leaking shocks and the signs of it are understeer (more so than usual), clunking over bumps, lowering of the entire cxar (mine lowered by an inch in the front), incorrect rebounding of shock over bumps, and of course - leaking shocks. Audi has remedied the DRC failure by issuing new updated shocks, known as "version B" and created a new DRC tool (tool is needed to re-pressurize the DRC system). I have been on version B for about a year now and have had no problems! I don't think there have been many RS4 owner's with version B failure either.

    Also, Audi is doing a massive coil-pack recall right now. All 2001-07 Audi models are getting updated coil-packs. I haven't gotten mine yet but have had no issues (and I have not gotten my letter from Audi NA).


    Other than these, you'll fall in love with the car (I'm serious!)! Not to mention, you'll own one of 3-5 RS4's in Atlantic Canada.....
    2007 Audi RS4 - Daytona Grey - Original Owner

    1957 MG MGA 1800 - Austin Healey Spruce Green

    2020 Mercedes-Benz GLC 63 AMG - designo Cardinal Red

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  9. #9
    Active Member Three Rings AndyGs4's Avatar
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    Me...personally....I would avoid anything FSI until they get the bugs worked out. Main bug being carbon buildup.

    Unfortunately, this means I won't be purchasing any new Audis until they get it fixed...I believe all 2011 models are FSI?
    2004 S4
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  10. #10
    Veteran Member Three Rings
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    I love the RS4 (I also upgraded from a B6S4 with which I had no complaints). At first it doesn't seem to be much of a difference (i.e. on the test drive), but once I did my research on the differences it was a no brainer for me ($10K more for the RS4 than I paid for my S4), check out this thread on the motor differences alone, let alone wide body, relocated battery, brakes, and a million other things: http://audiforums.com/forum/showthread.php?t=128918.

    One thing I will say, be prepared for high maint bills, even compared to the S4. Still the same $130 oil changes, but now $1500-$2000 per axle if you have the dealer replace the brakes, $3000-$4000 for a new clutch and FW when that time comes, etc. In my case, with 52K mi, I am getting into the mileage when stuff needs replacing, and ouch. For brakes I am getting JHM lightweight rotors (direct OE replacement), which were $525 shipped along with $150 shipped for OEM pads (got a good deal on eBay for OEM pads). I figure I will be $800 in for new pads and rotors on the front axle with better parts, so it should work out, but still not your typical expected expense for brakes, this is Porsche/Lambo territory (since I guess the brakes come from a Lambo). I have heard that blown motors are ~$20K, trannys ~$12K, etc. (a money shift will really hurt), but as long as you are under warranty and don't do anything not to be, you should be fine while it is warranted.

    As far as the experience of owning it, no regrets, every time I get in the car... it is just an awesome machine! The quality and engineering of the RS4 is really something to be appreciated if that is your sort of thing, for me it is :).

  11. #11
    Veteran Member Four Rings Retsujou's Avatar
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    There are a couple of tell tale signs as to whether your RS4 has carbon build up or not. My RS4 went through an 8 hour manual cleaning procedure after only having around 22K on the clock. The build up was very nasty. It also had a BG induction cleaning around 1000KM ago to ensure the build up does not return. Audi Canada WILL cover the manual cleaning after they have exhausted all other avenues. So first they will change your coil packs, then they will change your Spark plugs, then they will run chemical cleaners, then they will use a boroscope and then if you are lucky they will take off the manifold. My RS4 is pretty heavily modified so it will not drive like a regular RS4 but you are more than welcome to have a test drive. We might be up in Montreal soon.

    ...and just as a little add on. Not using the OEM brake pads is probably the best modification you can have :)

    As to whether you should get into an RS4 versus a 2011 S4 V6T, I do not think that needs to be asked. The RS4 is a legendary car whether as B5 or B7 version it really does not matter. Even though 90% of people on the street do not recognise what kind of car my car is they still comment. In summer I cannot go more than 3 days without someone commenting on it and that includes women for whatever reason. You will find many other cars that are fast off the line with a few modifications or stock, that does not change the fact that you get Audi's Quattro in the winter, a (kind of) full sized sedan and an engine that screams up to around 8250RPM.

    As to opening up the engine, that really does not happen until around 5500 where peak power is produced. There is no substitute for this car. Not in looks and not in what it stands for. Not in sound and not in what the engine can do for you. If you truly are power hungry APR and others are working on better Super Charger upgrades which would propel you well into Porsche 997tt territory in terms of torque and HP (of course you are still around 600 pounds heavier than them :) ).

    Add in the fact that you would almost unique and away you go.
    Last edited by Retsujou; 05-19-2010 at 02:55 PM.
    08 B7 Cherry Black Pearl RS4 + JHM Lightweight Flywheel + JHM Stage III Clutch + VAST Piggie Pipes + K&N High Flow Airfilter + APR Stage II (Testpipe tune) + Hueper Optik 30% + Magnaflow X-Pipe + Centre Resonator Delete + Deflap + HAWK Ceramic front/rear + Stoptech Steel Brake lines + V4 LED Headlights (blackout/clear corner)

  12. #12
    Veteran Member Three Rings
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    P.S. I just got my letter on the coil pack recall on Monday, got all of them replaced yesterday, no difference that I can tell... for better or worse, I guess my old ones were OK, but still nice to have new ones, those original ones probably wouldn't have lasted much longer...

  13. #13
    Veteran Member Four Rings awdjunkies's Avatar
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    Quote Originally Posted by zachf88 View Post
    Does Dieppe have this RS4? There is only 1 or 2 other RS4's in Atlantic Canada..... I believe their is an AVUS (silver) in st/saint john

    All RS4s have/will have carbon deposits on the valves and inlets. This is due to the poor design of the direct-injection.


    Doesn't the S4-V6T have FSI? If it does, the carbon monster will get to it soon enough....

    You are absolutely right, I just checked on it.

  14. #14
    Account Terminated Three Rings JohnnyAlQaeda's Avatar
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    Do RS4's have carbon issues? does a 5lb bag of flour make a really big biscuit?

  15. #15
    Veteran Member Four Rings drew's Avatar
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    Quote Originally Posted by JohnnyAlQaeda View Post
    Do RS4's have carbon issues? does a 5lb bag of flour make a really big biscuit?
    win

  16. #16
    Active Member Two Rings Living Weapon's Avatar
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    Yes, they all have (or will have) carbon problems at some point. That wasn't a deal breaker for me. I went with water/meth injection to "steam clean" my intake/valves, and others have gone with a catch can on the crank case vent. Of course AoA isn't keen on these mods, so I'd only go this route if you're unconcerned with engine warranty. For me, my main warranty concern is all the electronics and luxury features, since the modern conveniences in these cars add so much to the complexity. I'm less concerned about the engine and driveline, since the RS4 is designed to to be driven - if I drive it too hard, that's my issue. Then again, I'm running a super charger, so your needs/approach may be different. If an engine warranty is a priority for you, see if you can get the dealer to pull the manifold as a condition of selling the car, and have a look at the cleanliness with your own eyes. If it looks a mess, they will likely clean it to sell the car since they have it apart already.

  17. #17
    Registered Member Three Rings somethingcorp's Avatar
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    Quote Originally Posted by bob12312357 View Post
    Smoke on startup not a good sign unless ur an 800hp Supra, deff not for a newerRs-4. Personally with all the issues guys are having and the fact Audi stands behind their warrenty(around 100 miles behind it) and AOA doesn't givea crap and has not issued a recall I would pass and go with the S4V6T. People on here have spent 2-4 grand to have their cars desludged and it popped back up in months. One guys car was barely putting out 250hp due to sludge. The way Audi handles their warrenty and AOA's response to this situation ensures I never buy a new or CPO Audi.
    are you guys just dumb or actually mentally handicap.. the carbon build up happens in ALL FSI MOTORS... keep reading
    Jhm tune, Piggie pipes, Awe Non-res cat-back, Intake spacer, clear corner mod, custom suede trim.. more to come

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  18. #18
    Established Member Two Rings
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    ok, you guys are really killing me with this carbon thing. This isn't a Civic. Have the intakes of your heads cleaned every 20k or so and just enjoy the car. If you are looking for a zero maintenance car this probably isn't the best choice for you. It's really not that big of a deal. Most high performance engines have some maintenance issue or other to deal with. It's the price you pay for having a high strung engine.

    Jason

  19. #19
    Account Terminated Three Rings JohnnyAlQaeda's Avatar
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    yeah high strung motors will have issues, but with the price of these cleanings for most folks it make more sense to trade the fucking thing in on a newer rs4 every year or so. you shouldnt have this kind of issue with an unmodified factory built motor. youre right it isnt a civic so it wont cost $20 to pull off your intake manifold and clean your valves. its not a maintenance issue its a design flaw.

  20. #20
    Veteran Member Three Rings
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    I kind of side with RS4Jay on this one. Ibought the RS4 knowing about both the DRC issues and CB (as well as the other highmaint items.... this is just straight up a high maintenance car). Reading all of the forums for exotics, all of the cars engineered on the other side of the pond seem to have quirks like this. I haven't had DRC issues (I don't think, knock on wood), and I am about to go learn how to do the CB cleaning myself (with a parts price of about $40 for gaskets and $40 for the seafoam, and perhaps a full Saturday set aside to do the work and some vicodin for when its all done). It is bad design IMO, but then it doesn't look like exotics are engineered or tested for the long hauls (50, 100k mi), nor is maint a high priority it seems. They are looking at pure performance, sex appeal (automotively speaking), and luxury IMO (100HP/Liter is pretty damn good... assuming that is what the RS4 really gets when it is clean :)).

    BUT, they better get their sh*t together IMO... because US, JDM, Korean manufacturers are coming after the Italians, British and the Germans... and coming fast. If I could have picked a car from another manufacturer that was somewhere in the neighborhood of awesome as the RS4 and price comparable(Quattro is a big deal to me BTW, otherwise the market really opens up), I would have in a New York minute given my personal experience with Audi warranty stuff (coupled with the crap I have read on the boards here that are a million times worse)... but AFAIK one doesn't exist...

    So I bought the RS4, I love the hell out of it, and I accept that I am going to have to deal with a PITA valve cleaning every so often along with uber expensive parts (which is a great excuse to go after market, which are usually better AND cheaper, totally weird for me being a former domestic gear head). Would be better if I didn't have to deal with it though!!!!! That would make the difference as far as brand loyalty goes....

    Back to the point, even with the CB, I still love the car, and don't regret going from the S4 to the RS4 (didn't have an Avant though, super nice do everything car, I would give my left (and right) nut for a new RS6 Avant, but whatever :)).

  21. #21
    Active Member Two Rings phillict_R32's Avatar
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    Interesting video to watch. They don't touch on the carbon build up issue, but it may help persuade you one way or another.

    My $.02, the RS4 has always been a dream car to me. Now that I have one I love it! I think this car is just like anything else in life, you have to take the good with the bad (IMO there is much more good than bad). I am willing to deal with the carbon issue (haven't had any to date with 35K miles) because I think the car has amazing styling and performance for the price.

    http://www.youtube.com/watch?v=CkHnH2xs7wE
    Drive fast and take chances.

  22. #22
    Established Member Two Rings
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    Craft - This isn't just a German issue. It's a direct injection issue. And I looked around the forums at several cars before buying my RS4 and trust me, they all have some hyped up fatal flaw according to the owners. The CTS-V's and the Z06 are both US cars and look at some of the issues on those forums. You see a common trend of people hearing things like "not covered under warranty, you drive too hard" etc.. I also looked in depth at a 996 C4S. They have the frequent RMS leaks and not so frequent IMS bearing failures (which destroys the engine in short order). Of course this doesn't stop people from buying them. You just have to replace the RMS every 50k and upgrade to a stronger IMS bearing at a cost of $2k. If you are concerned about having a zero maintenance high performance car you will never buy anything after reading the various forums. Just do your research and know what to expect, then buy the car you like... and of course have a blast with it.

  23. #23
    Veteran Member Four Rings richib86's Avatar
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    ive had more issues than 90% of the ppl out there and would hands down pic this car up again. i came REALLY close to pulling the trigger on a 2011 s4 and could NOT bring myself to do it. the rs4 feels like an animal, and even tho the new s4 isnt too far off on performance, its just WAY too tame for my liking and i feel like most would agree who have test drove that car
    2019 S4, Quantum Grey, Magma red, Presitge, Black ops, Sport package, Driver assist, Dynamic steering, Carbon mirrors and spoiler, Xpel XR ceramic 35%, Alcantara flat bottom wheel w/ RS paddles, Alcantara shifter, TAG reflectors, APR Stage 1, CTS testpipe, Resonated Miltek, P3 gauge, KW H.A.S., ECS Intake scoop, ECS Carbon intake, ECS Intercooler with charge pipes, ECS Carbon engine cover overlay, ECS Carbon ECU cover, O34 trans insert, O34 rear sway bar, HRE P101 20x9.5 ET35 w/ 265/30/20 PS4s

  24. #24
    Veteran Member Four Rings Retsujou's Avatar
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    Quote Originally Posted by richib86 View Post
    new s4 isnt too far off on performance, its just WAY too tame for my liking and i feel like most would agree who have test drove that car
    Not to thread jack this, but really? So there has been a big jump between the 2010 and 2011?
    08 B7 Cherry Black Pearl RS4 + JHM Lightweight Flywheel + JHM Stage III Clutch + VAST Piggie Pipes + K&N High Flow Airfilter + APR Stage II (Testpipe tune) + Hueper Optik 30% + Magnaflow X-Pipe + Centre Resonator Delete + Deflap + HAWK Ceramic front/rear + Stoptech Steel Brake lines + V4 LED Headlights (blackout/clear corner)

  25. #25
    Active Member One Ring
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    If I get a DRC failure, how am I supposed to get it fixed? I live in saint John. N.B.

  26. #26
    Active Member One Ring
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    Thank you very much for the link to the video. They did not mention that the 2010 V6T is larger than the RS4!!!

  27. #27
    Veteran Member Four Rings jareds941's Avatar
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    If knowing that your engine is making absolute max power like it did on day 1 will really bother you and you don't want to pay the $600 or so for cleaning, then pass. If, you're like me, and get a big grin on your face every time you see your car and hear the exhaust, then go for it. I'm sure my car has CB...but it still goes plenty fast to get me into trouble and still pulls like a banshee at 5500rpm. And mine has 30k on it. As others have said, the rareness of this car and the sound and the looks mean something...how much depends on the person.
    Mine: 2021 Ford F150 PowerBoost
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    Previous:
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  28. #28
    Veteran Member Four Rings
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    Quote Originally Posted by grivett View Post
    If I get a DRC failure, how am I supposed to get it fixed? I live in saint John. N.B.
    You can either go with aftermarket (Stasis, which everyone loves) or Dieppe may "borrow" the DRC tool from an RS authorized dealer. If you do have this issue, I would recommend that you get the job done by an RS dealer, so they know what they are doing. But with 50K on the clock (if I remember correctly from the ad), the DRC should have failed by now. Do you have any records on the car? Maybe the DRC was already fixed....

    The DRC is a very complex system that is very high pressure (I recall around 115+ psi) and many techs have not had the proper training to work on it. However, it should be covered by warranty (got all 4 corners replaced with updated p/n's under warranty).

    Also, here's a link to the stasis. They have two kits: ms and sl. Everyone seems to love the ms...

    http://www.stasisengineering.com/Thu...x?ID=4&VID=195
    2007 Audi RS4 - Daytona Grey - Original Owner

    1957 MG MGA 1800 - Austin Healey Spruce Green

    2020 Mercedes-Benz GLC 63 AMG - designo Cardinal Red

    2024 Tesla Model 3 Dual Motor - Stealth Grey



  29. #29
    Senior Member Two Rings blkonblkS4's Avatar
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    Quote Originally Posted by Retsujou View Post
    Not to thread jack this, but really? So there has been a big jump between the 2010 and 2011?
    From what i have seen the 3.0T is pretty much on par with a stock RS4....in a straight line. The main difference would be handling and looks. The RS4 kills the B8 S4 in the looks dept.

  30. #30
    Veteran Member Three Rings
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    Quote Originally Posted by RS4Jay View Post
    Craft - This isn't just a German issue. It's a direct injection issue. And I looked around the forums at several cars before buying my RS4 and trust me, they all have some hyped up fatal flaw according to the owners. The CTS-V's and the Z06 are both US cars and look at some of the issues on those forums. You see a common trend of people hearing things like "not covered under warranty, you drive too hard" etc.. I also looked in depth at a 996 C4S. They have the frequent RMS leaks and not so frequent IMS bearing failures (which destroys the engine in short order). Of course this doesn't stop people from buying them. You just have to replace the RMS every 50k and upgrade to a stronger IMS bearing at a cost of $2k. If you are concerned about having a zero maintenance high performance car you will never buy anything after reading the various forums. Just do your research and know what to expect, then buy the car you like... and of course have a blast with it.
    I wil have to checkout the ZR1 and CTS-V, I had no idea they had design issues that affect every car that roll off the floor, maybe they do though, pretty complicated machines themselves. I am especially interested in readin how GM is handling them. C4S is German, and the Porsche issues are actually part of what I had in mind when I was talking about German = High Maint for sports cars that don't feel manufacturer backed, I have read that their maint is even worse, higher, and there are several design flaws that the owners are left to deal with, but that is all anecdotal, I don't remember much in the way of specifics because I stopped researching owning one after reading all of the EXPENSIVE issues with them that to me should have been handled by the dealer, and more importantly were very difficult to DIY manage. BMWs based on my "car guy experience" are known for their issues as well, again probably becaue of being on the bleeding edge with so many features. I only ever owned one (an 88 328is), and I could never keep the damn thing running, and boy was it expensive to fix (no aftermarket mods either). But again, that is more of my perception, I know there are plenty of fine BMWs out there with very happy well taken care of owners, but I just have the perception of a high number of issues (I had a friend with a first year 745i where it was in the shop more than in his garage with CRAZY problems, that has probably jaded me... so my opinion doesn't really count there given it is not personal experience). As for Mercedes... even more anecdotal, I hasve never owned one, I have drooled over many though, excellent machines (I will own an AMG some day, just for the experience), but again from friends who have owned them, high incidents of quality issues. My main point on singling out "German" is that in the car circles I have run with, the general perception of the big three German manufacturers is "great cars, but a real PITA and expensive to own, and cold dealer experiences). For these problems in this thread which are the only ones I am really qualified to speak of, to me it is an Audi issue, given that the "flaws" aren't equitably dealt with for the customer. Every thing will have flaws, it is how they are dealt with that makes a difference. I used to be a domestic car guy (still am really, I appreciate all nice cars, no matter who their maker is :)), but the difference in my personal experience with both Ford and Chevy was that they took car of me when their design flaws impacted the performance or safety of the car, with NO INTERVENTION on my part, sometimes I didn't even have to ask! Of course this was in the 90's and early 2000's when money grew on trees and the big three weren't on the verge of melt down, with my previous 00 Mustang GT, Z28 Camaro LT1, 04 Explorer, my current 07 MKX, (and a few others) the service is better, they actually TRY to fix what is going on with the car(although issues were rare relatively speaking), and new models seem to try to correct past mistakes. Invariably they would bend over backwards when I had issues and get them resolved. Maybe it is because they get sued into TSB faster??? I dunno. With my RS, I get the feeling that my dealer wants to help, but the CANNOT... lets just throw some FI cleaner (which is idiotic and doesn't do a damn thing), clear the CEL and send me on my way, another 60 miles round trip for nothing. The one thing I will Google about is the affects of DI on other cars now that it is common, to see if other manufacturers either (a) come up with a system to prevent it that actually works, (b) at least take care of it without making the customer beg, or (c) tell people to get bent. If all manufacturers have become the same in dealing with the clientele that purchase their highest end vehicles, then I won't feel so bad about Audi I suppose, vs. about where we are headed in general.

    To give an example of a car manufacturer that actually DID something, think about the GT-R and launch control... it was NOT documented in the owners manual, but it was widely publisized. If someone used it and broke their tranny, boom no warranty... at first. Then they capitulated in most cases and covered it (from what I read), and THEN they actually fixed the root cause of the problem in a relatively short period of time(granted it was an easier problem) with an ECU flash canging the RPM point where the clutch engaged, etc., and as a bonus, cars that were flashed drove out with better performance, like a free GIAC chip!!!

    In my ownership (and when I was a line tech, granted only for a couple of years dedicated, but I still have professional experience) of both JDM and US cars(we never really say Swedish, German, etc. come in to the used car side)... I have never seen this degree of the "get bent" type of customer service(I have seen the screw the customer over for $ though, which was worse, but that was the people, not the company), nor have I personally seen issues of this type with cars rolling off of the factory floor for so long with NO RESOLUTION. With my own peronal JDM and US cars, you don't mess with it, just take care of it, and it runs... and usually, if you messed with it and knew what you were doing, it runs better, but it still just runs. Of course a lot of those are just "transportation" :). But then there was the TT Supra... that was a hell of alot more than transport, but I don't recall anything like that with those when I worked at the Toyota dealer. The biggest problem with those was being able to GET one.

    The big difference probably is that these cars are indeed more advanced and high strung, i.e. on the leading edge of demanding technology on the mechanical edge(>8000 RPM redline, woo hoo!), so it makes sense statistically that there would be more problems. BUT, the difference... I don't get squat from Audi regarding support, even with repeated CELs, demonstrated rough idle (bouncing between 800-1400RPM at random intervals), and absolutely no top end power anymore (past 6000 RPM), where this car is supposed to shine, what I PAID for over my S4. I cannot speak for other car companies and DI (yet), but COME ON.... how long has it been, and it seems to take extreme patronage (translated to financial leverage) to get them to fix it, or hitting the right dealer, or something, certainly no consistence and it takes them FOREVER to deal with issues. My LOCAL dealer is great, I really like them, but they are hamstrung by AofA, at least that is the impression that I am getting, and it alienates me a customer from the brand. DRC, again, COME ON. it has been 8 flipping years... and still people have to fight (in SOME cases) and go through hell in some cases to ge it fixed. There should be ZERO, let me say that again ZERO cases where someone has to fight if there is a demonstrated known issue on their $75K car. Considering the potential issue if it/when it breaks, they should be pre-emptively fixing them all NOW via TSB... but NOPE. Took lawsuits to take care of them on the 03 RS6's... and LOTS of bad publicity. Dealing with AofA (or is is it Audi of Europe?) feel like dealing with mail in rebates, looking for any excuse whatsoever not to cover you. I have PERSONALLY experienced this... so these are My opinions and feelings... and as an Audi customer I believe I am entitled to express the difference in my experiences vs. my dealings with other car companies.

    Getting back to the point... even with all of this... because Audi builds such a fine machine with the RS4(and many others, they are a very nice engineering company, I think one of the best)... I bought one knowing what I was in for, in the back of my mind hoping things would change given how much Audi seems to be stepping up their advertising campaign here in the states... i.e. that they would step up their support as well. Een if not, I still have a machine that I appreciate everyday, and I would deal with the frustration because I guess you cannot have everything.

    Anyway, I have to go pack now, I am taking a 12 hour round trip so that I can spend a day to clean my own f*cking valves and get my car back to its best... I will take my frustration out by scrubbing on that CB :).

  31. #31
    Veteran Member Three Rings
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    Holy smokes, sorry, didn't mean to make it that long, diarhea of the fingers I guess :).

  32. #32
    Veteran Member Four Rings whartung's Avatar
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    Quote Originally Posted by crafty View Post
    Yep, V6T has FSI to. I think FSI is pretty common in Audi motors now... and all of them are having CB issues, my dealer said they are doing the cleanings a lot, once it gets past some point that I have not yet reached (not running?).
    I've heard words that the carbon issue was addressed in the new S4 V6t by having primary FSI that was supplemented by a minor standard injection to run gas over the valves. this of course was word of mouth, so I have no idea how accurate it is. It would seem like a big oversight on the part of audi to have a significant carbon issue in the RS4 that went unaddressed in the newer generation of cars...
    Sold: 2005.5 Sprint Blue Pearl Audi S4 Sedan 6MT
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  33. #33
    Established Member Two Rings
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    Yeah so it might have some build up. Buy it and enjoy it. I bought one knowing about the CB and DRC issues. First thing I did was buy coilovers. No more problem:) As for the build up. This car has 45K miles and no signs of build up. I'm sure its there but it isnt showing any signs. No cels, no hesitations, etc. I checked service records and no sign of cleaning it either. Car pulls nice and strong. All cars have something to deal. C63's eat rear tires every 3k miles. Tell me that doesnt get costly. Every time I did a long trip I was like when we get home I have to order $600 worth of tires. Lexus/ Toyota with mad recalls. I bought a new E63 and the trans failed 3 times first time was at 1000 miles. I bought a new CTT and traded it in with 900 miles because it spent the first month in the shop. They never could fix it all. My POINT, all cars have quirks. I am absolutely loving this RS4. No issues and no problems here. When I need to pull the IM and do a quick cleaning so be it. It will give us some bonding time:) I say if you like the performance and the looks, GO FOR IT....

  34. #34
    Veteran Member Three Rings
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    Quote Originally Posted by whartung View Post
    I've heard words that the carbon issue was addressed in the new S4 V6t by having primary FSI that was supplemented by a minor standard injection to run gas over the valves. this of course was word of mouth, so I have no idea how accurate it is. It would seem like a big oversight on the part of audi to have a significant carbon issue in the RS4 that went unaddressed in the newer generation of cars...
    Agreed 100%, but then I think of DRC on RS4's vs. RS6 a few years before... and am not so sure.

  35. #35
    Established Member Two Rings Babyfoood!'s Avatar
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    FSI = Deposit Build-Up at Valves. Until a fix is made, don't buy a car with an FSI engine no way, no how. Lease only.

  36. #36
    Veteran Member Four Rings Retsujou's Avatar
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    ..and to just add it again. My car as around 45K (Kilometers!) now and the DRC is working just fine. There is a little bit of sweating on the front shocks, that is it. So in no way is there a guarantee that the DRC will fail nor does every installed DRC fail.
    08 B7 Cherry Black Pearl RS4 + JHM Lightweight Flywheel + JHM Stage III Clutch + VAST Piggie Pipes + K&N High Flow Airfilter + APR Stage II (Testpipe tune) + Hueper Optik 30% + Magnaflow X-Pipe + Centre Resonator Delete + Deflap + HAWK Ceramic front/rear + Stoptech Steel Brake lines + V4 LED Headlights (blackout/clear corner)

  37. #37
    Senior Member Three Rings
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    Quote Originally Posted by RS4Jay View Post
    ok, you guys are really killing me with this carbon thing. This isn't a Civic. Have the intakes of your heads cleaned every 20k or so and just enjoy the car. If you are looking for a zero maintenance car this probably isn't the best choice for you. It's really not that big of a deal. Most high performance engines have some maintenance issue or other to deal with. It's the price you pay for having a high strung engine.

    Jason
    This is the post any potential RS4 owner should read. My car has 33k miles on the clock and still pulls hard. As I've said in other threads, could it pull harder if I cleaned it? Im sure it would feel like it....but it still feels damn good now so why even bother? And maintenance items can get costly but its not all that bad. Oil changes are just the same as an S4 as mentioned by someone above, brakes are best purchased aftermarket since you will save a ridiculous amount of money, clutch is the same. And if you can, go to a local performance shop to have your maintenance done instead of the dealer. You will not only save money but you will actually get much better service and much more knowledgeable staff.

    Today Im getting my brake pads replaced and all fluids changed (trans, diff, brake) for probably 40% cheaper than what the damn dealership would charge me. And my Stoptech pads....$250 total. Pads from the dealer? Youch....
    New - 2013 S4 Moonlight Blue Metallic
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  38. #38
    Veteran Member Four Rings PetrolDave's Avatar
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    Carbon buildup in the intakes of the RS4 is an issue that is being hyped up by some new owners with little or no knowledge of how to design or build an engine - read the (often bad tempered) threads on RS246.com if you want proof of that.

    My RS4 has done 44k miles and still pulls acceleration runs that suggest it has not lost the 60+bhp that some people claim is caused by carbon buildup. I don't treat my car specially - I drive it, I have it serviced, end of.

    My DRC is being replaced under the extended warranty offered by Audi UK, but I wouldn't complain about having to replace shock absorbers on any nearly 4 year old car in the UK - given how appaling our roads are!

    My RS4 is the ONLY car that has made me smile as much when I drive it - after nearly 4 years I still smile like a Cheshire Cat every time I drive it, and driving my other cars just makes the sheer enjoyment of driving an RS4 even greater.

    If you're thinking of buying an RS4 and realise that it's not just a boring shopping car, then my advise is to go for it. I plan to keep my RS4 for many more years...

  39. #39
    Veteran Member Three Rings
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    FYI, I have my intake off right now... and I will post pics later (I have to get up in 4 hours (and still need a good shower) to finish probably about 8 hrs more of work in time for the 6 hr drive home, but after 52Kmi I can say from my own experience that the CB is horrible.

    Also, I have vags of 2 "before" 3-8K RPM 3rd gear runs, sampling 4-5 times a second, with RPM, timing, engine torque, intake air temp, and mass air flow. The timing isn't that bad thughout the run, air flow is definitely low... but in my two runs (1500 elev. about 79F ambient, about 320lb driver and passenger weight, but I also have 19lb wheels, 24lb tires, much lighter after market FB Milltek exhaust, etc. so there are things that add vs. detract from expected performance) where I get 10.5 sec almost exactly for both runs from 3->8K RPM pedal to the metal. After I am done cleaning tomorrow... will do the same test with hopefully close to the exact same conditions (ambient is the only one out of my control).

    Also, we did vacuum tests before hand, everything was functioning fine (intake tumblers, inlet 5K flap, exhaust flaps). No other indications of mechanical issues in VAg either (other than consistent misfire CELs over my ownership).

    P.S. I wouldn't wish manually cleaning these valves with 52K mi of crap baked on to my worst enemy! I don't blame my dealer for not wanting to do it. If I were a tech and had to do this all of the time in this manual, incredibly inefficient way... I would quit! I wll need a warrantly replacement on my back when this is over, to bad it ain't covered by CPO :). Audi needs to get some smart people to invent some good tools/processes to make this as easy as possible. According to my dealer, they clean FSI engines manually just lke I am doing ALL OF THE TIME. The quality of life for the techs that have to do this work manually cannot be great :/.

  40. #40
    Established Member Two Rings 767Driver's Avatar
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    Quote Originally Posted by grivett View Post
    I too, am also thinking of trading my gorgeous 06 Avant S4 (35,000 miles) for an 07 RS4. How do I know if this RS4 has a carbon issue? The dealer wants $17,500 and my car. The RS4 has 30,000 miles and is Audi certified. I tried it but was not able to open it up. It did not seem to have much more power than mine but I didn't rev it beyond 4500 rpm. It did not break down, but it smoked when it was started. A lot of good looks, but not a lot of improvement. Should I wait and buy a 2011 S4 V6T (which is considerably bigger)? I must say that I LOVE the looks of the RS4. I've never seen anything I like the looks of like that. I'm 64 and I've had a lot of nice cars including 3 S4s.
    Unfortunately for me my low mileage beauty is for sale on Ebay right now. Item #260606130443 if you are really looking for a clean meticulously maintianed car. PM me for further info if your interested.

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