B8.5 s5 vs rs5 gas mileage ?

[Wantboost]

How much of a difference in real world gas mileage I'm seeing such different claims everywhere . Easier way . How many kms or miles to how many litres do u guys get on avg .... or if u already calculated it what's you usa mpg .

I want the rs5 due to v8 . CAUSE I love the sound . But debating the fuel economy as a DD

[leew102]

I’ve gotten ~22 mpg before on the RS5. But I’ll normally average ~13-15 mpg due to driving style. The 22 isn’t terrible, but you’ll have to drive in comfort.

[ffearless]

I drive my RS5 152 miles per day. I get about 22.5 MPG. If I keep it down to 60mph, I get 24 to 25. If I have fun I get about 18.

[leew102]

I drive my RS5 152 miles per day. I get about 22.5 MPG. If I keep it down to 60mph, I get 24 to 25. If I have fun I get about 18.

152 miles per day?! And you’re able to get 22? Man I must really have a heavy foot.

[PEM]

152 miles is probably mostly highway so it's easily doable. My normal commute I get about 17ish, but I do a 90 mile trip every few weeks and I can get anywhere between 20-24 depending on how much fun I'm having. Normal commuting I have to refill after about 200-230 miles from a full tank. If longer trips on the highway, I can probably swing 240-260

[ffearless]

I have 3 stops on my trip each way. I set my cruise at 77.5 in a 70 and 67.5 in a 60 zone. I refill at 300 to 330 miles.

[leew102]

Ahhh, most of my trips are city and backroad driving. Certainly doesn’t help that I drive pretty aggressive when I can. I haven’t taken the RS5 out for a long trip yet.

[PEM]

I have 3 stops on my trip each way. I set my cruise at 77.5 in a 70 and 67.5 in a 60 zone. I refill at 300 to 330 miles.

300-330?!?! LMAO I wish. Most I've done in a single tank was like 265 sitting on E and my estimated miles at 0 for like 10 minutes.

[Ape Factory]

I was able to get almost 25mpg on a very long highway trip after purchasing the car and driving it home. It was relatively cool out so I didn't need to run the a/c. Daily driven, I'm averaging about 18mpg in the hot summer months, 16 in the winter. I'll be taking another very long, 3K mile road trip in August which'll be all boring highway unfortunately. I'll keep track of my mileage on the trip.

I would expect around 16mpg in the RS5. I don't hoon it everywhere all the time, only when cough, appropriate. I do find that my mileage doesn't fluctuate much though. I generally use a bit over half a tank a week no matter how I drive. I've used just half a tank in a week just once. Not sure how I managed that. Typically, a week is about 170 to 180 miles. I fill up every week and never let the tank run on fumes. Using top tier gas too.

[namvar]

16-17 MPG aggressive driving to and back from work

23-24 mpg if I set the adaptive cruise to 70 MPG

[snocat17]

Posted in your first thread...

I'm getting 280-310 miles per 12 gallons on my 2016 S5 (24.5), all on curvy two lane highway. I can get close to 27.0 mpg if I drive interstate and really try.

I went with the S5 since it's my DD. I figured 15% better fuel economy was worth it, and the car is still a blast to drive.

That V8 sound tho...

[AsherAudi]

I have no idea how you guys are getting such good mileage on RS5's as mine gets about 10 mpg lol (approx 160mi range on a 16g tank). Never seen 20+ mpg once but I also haven't done long highway cruises at 60mph either. Usually drive in Manual mode at a higher rpm than needed but I accepted the high gas expense when choosing RS5 vs S5 from the start so it doesn't bother me other than the inconvenience of having to go to the gas station every other day. It's definitely made me realize I need to get the Extended Range Fuel Tank option if I ever pull the trigger on a porsche gt3.

[Runge]

22,000 miles tracked
Average 18.1Mpg Best 22.3Mpg. Worst 9.15Mpg.
Average of about 20ish for highway at 75mph for 60mile straight trip. Drop it down to 60mph and gets much better but don't know value.

Don't use the trip computer setting, that value is usually lower then if you calculate it manually. (Fuelly.com)
Trip 10.7 L/100km Math Says 11.48 L/100km
Trip 11.4 L/100km Math Says 12.12 L/100km
Trip 11.9 L/100km Math Says 11.40 L/100km

[Ape Factory]

I have no idea how you guys are getting such good mileage on RS5's as mine gets about 10 mpg lol (approx 160mi range on a 16g tank). Never seen 20+ mpg once but I also haven't done long highway cruises at 60mph either. Usually drive in Manual mode at a higher rpm than needed but I accepted the high gas expense when choosing RS5 vs S5 from the start so it doesn't bother me other than the inconvenience of having to go to the gas station every other day. It's definitely made me realize I need to get the Extended Range Fuel Tank option if I ever pull the trigger on a porsche gt3.

You’re in Austin, that’s why! I think the city wide speed average is 15mph LOL. Worst traffic ever.

[easy_button]

2013 RS5 (was) here. Worst mileage I ever saw in stop and go DC driving was always around 19 mpg; usually stayed above 20. With lots of highway, would generally see 22 combined with better than 25 on the highway. From my experience, which includes a couple S4 service loaners (that got about 17 combined for the couple of days I had them), the RS V8 gets better gas mileage than the supercharged V6... one of the best motors ever made, sad to see it go. FWIW, usually filled up every 300 miles, with room to spare.

[superswiss]

I don't really think that much about the gas mileage, other than frequently having to go to the gas station and figuring out where I can fill when I'm out busting through the canyons. I wish the car had a bigger tank. I would say if you care about gas mileage, this is the wrong car for you. I do occasionally check out of curiosity and the board computer currently shows a lifetime average of 15.3 mpg over now almost 63k miles. I do do frequent road trips and the highest I've probably seen on a pretty long trip with mostly highway driving, Comfort mode and ACC engaged was 23 mpg. Putting it in context a bit, my previous S4 V8 managed 14.3 mpg average over a little over 80k miles. So, given that the RS5 has over 100 horsepower more and I drive it much harder than I did the S4, it's somewhat impressive that it manages 1 mpg more on average.

[mcbuck]

Best I have ever gotten on a long highway trip driving somewhat sane is just over 21 mpg. Most often daily driven with mix of stop and go and some highway is 16-17 mpg.

Even after 2-1/2 years of ownership, it's still hard to keep my foot out of it. It's more about the smiles per mile...

And I take a perverse joy in teasing the prius and hybrid drivers at my office that I'm canceling out their environmental impact lol.

[JamesRS5]

I average 23mpg on the 45 minute drive to work, that’s in comfort mode and either light throttle cruising or cruise control (ACC) I usually sit at 125 to 130kph.

[HMS]

yeah.. I average about 9mpg.

But I did get 400 miles out of a full tank once on a long drive. Was a bit of a fluke.

[MME1122]

I get average 19.5 on my S5, with my 18" wheels it's slightly better at 20.0. I have the manual.
But I don't really think gas mileage should be your primary concern with either of these cars lol. S5 is slightly better but to me, it's not enough to pass up an RS5 if you're considering that.

[superswiss]

FWIW, the official figures are 16 city, 23 highway and 18 mixed. So realistically, you are not gonna beat those figures and if you drive the snot out of the car regularly like I and others do, then the average will only go down. But based on my observations, the official figures are pretty much on the money for conservative driving. Even on my regular canyon outings that are about 30-40% aggressive canyon carving and the rest highway driving to and from the canyon I usually do 18-19 on average. I did the same with the new RS5 when I took it out, so even the supposedly more fuel efficient downsized FI engines aren't really anymore fuel efficient if you drive them hard at least part of the way. The higher highway mileage doesn't offset the gas guzzling aggressive driving unless you really do a lot of highway driving to bring up the average.

Sent from mTalk

[PEM]

^ yep. If you're worried about gas mileage in these cars, it's probably best you don't get one as a DD, or if you do, just go with the A/S5. I for one love getting in my RS and hearing the V8 roar every day.

[mcbuck]

I for one love getting in my RS and hearing the V8 roar every day.

You know, I almost miss Doug coming in here and shitting all over our RS5 love fest.....almost.

[PEM]

You know, I almost miss Doug coming in here and shitting all over our RS5 love fest.....almost.

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[Ape Factory]

Drove from San Antonio to Columbia, MO yesterday. My best mileage was, if I remember correctly 22.6 mpg which came on my first tank. I had 320 something miles before I pulled in. I'll get the exact numbers as I wrote them down.

That was on my first tank. The temperatures had started out in the 70's and were in the 80's by the time I pulled in for gas on the North side of Dallas. My average speed was pretty high as I went around Austin on a highway where the speed limit was 80. I cruised at about 85 so I didn't get run over by other vehicles. I also hit bad traffic in Dallas.

I theorized I could do quite a bit better on my next tank with air temps on the rise (less air, less fuel). My air pressure was 39f/36r as I checked prior to leaving the house. So I added two psi all around after filling up and headed out.

Unfortunately, I took 69 through Oklahoma which is about the worst highway ever due to multiple traffic lights and small towns along the route. So I spent a lot of time stopped and accelerating from said stop. I pulled into the next gas station with only 319 miles on the trip calculator with a cruise speed at 80. Both times, the needle was on empty. I also could not find 93 octane in Oklahoma so I waited until I crossed the border into Missouri. No luck at a big chain, 91 octane was their best. Hoping to find 93 octane this morning on my way out. Headed to Ohio today.

[Darel]

I'm sorry but you guys must drive like..I dunno....BMW drivers?

My S5 has the 4.2 V8 and I think the gas mileage is phenomenal, especially compared to the Silverado it replaced. Day to day commute I get a fairly regular 26 mpg, and that includes a 1,600-ft climb up the mountain to my house in Mountain Top. Of course, on my way to work I'm coasting down that same mountain so it averages out. But either way, round trip I'm averaging 26.

When I drive down to the base (I'm a Reservist) about 3 hours each way, 3-4x per month, I am comfortably getting 27-28 and have done as well as 32 when I experimented with "hypermiling" it.

I don't feel like I'm babying the car at all. I just don't drive like an ass. Just because you have 365hp doesn't mean you have to use it constantly.

[PEM]

Lol pff ^ who let grandpa in here. Not sure if you noticed, but most posts in here are from RS5 owners, and one of the two who posted with S5s have near your figure. Clearly us RS5 guys like to actually use our cars a bit more as they were intended to be driven, otherwise why pay the premium at all? Different strokes for different folks. "Babying" is subjective; maybe our "babying" is equivalent to your agressive driving. Just food for thought.

[superswiss]

I'm sorry but you guys must drive like..I dunno....BMW drivers?

My S5 has the 4.2 V8 and I think the gas mileage is phenomenal, especially compared to the Silverado it replaced. Day to day commute I get a fairly regular 26 mpg, and that includes a 1,600-ft climb up the mountain to my house in Mountain Top. Of course, on my way to work I'm coasting down that same mountain so it averages out. But either way, round trip I'm averaging 26.

When I drive down to the base (I'm a Reservist) about 3 hours each way, 3-4x per month, I am comfortably getting 27-28 and have done as well as 32 when I experimented with "hypermiling" it.

I don't feel like I'm babying the car at all. I just don't drive like an ass. Just because you have 365hp doesn't mean you have to use it constantly.

I must call BS. How do you arrive at these numbers? Is that what the board computer tells you? The 4.2 6MT is a 14 city 22 hwy car. No way you gonna beat those numbers by this much unless you literally are in everybody's way driving way below the speed limit like a 90 year old grandfather and your downhill driving can save you potentially a lot more fuel that you need going back up the hill depending on how you drive. Going downhill you essentially burn close to no fuel. Elevation is a factor, but you are not that high up, but less oxygen means less fuel being burned at higher elevation. At 1600 ft, you are only down about 17 hp, though and equal reduction in fuel consumption.

BTW, in case the math helps you understand this better. Let's say you drive up your mountain for 14 miles and you get 14 mpg. Then you drive back down the mountain for 14 miles burning zero fuel, because the engine cuts off the fuel your combined mpg for the 28 miles driven is 28 mpg, because you only burned fuel for about half the way. Now compare that to somebody who drives 28 miles in the city doing 14 mpg for the entire 28 miles. While you burn 1 gallon, they burn 2 gallons.

[leew102]

I will mention, after installing my ECS Tuning X-Pipe on my RS5.....I am now getting 18-21mpg pretty consistently with my mixed city and highway driving. Prior to the x-pipe, I had the tendency to always drive in dynamic mode just because I wanted to hear more sound from the car. Now with the x-pipe, at times it is pretty loud driving through city roads. I now pretty much drive in individual mode with the Engine Sound setting set to dynamic and transmission set to auto. This has definitely produced far better gas mileage and the x-pipe gives far more sound in these settings than the stock exhaust did in dynamic.

[Ape Factory]

I finished up my road trip last night. Thirteen long hours on the last stretch yesterday. I did end up besting 22mpg with one high 23mpg run through Indiana and Illinois a few days prior. Then yesterday, driving out of Missouri into Oklahoma (aka downhill) I hit a whopping 25mpg. I checked it three times. This is taking mileage and the amount of gas used to fill the tank into account. I also had to follow an LEO (law enforcement officer) for 20 odd miles or so. Due to rainy conditions, the temperatures were in the 70's and I didn't need to turn on the a/c until I was well into Oklahoma. On my return trip, I was generally going 75mph or under and traffic was better overall. My worst was 20mpg and change. Need to fill up this morning so we'll see what the run from Dallas to San Antonio produced. I'm thinking 19mpg due to stopped traffic and having to constantly pass left lane drivers in Austin on I-35. They're the worst.

[Darel]

To the two "young whippersnappers" who replied to my post - yup, I do have an S5 and not an RS so that's apples to oranges. I exceed the speed limit by a safe and non-assholish amount everywhere I drive (5-10 over with the cruise on, usually). Like I said, I don't baby the car. And yes, this is through the onboard computer - why? Are they somehow known to be "optimistic"? Why would I bother to do math when I have a flashy math box right in front of my face?

It sounds like Ape Factory is pretty damn close to my numbers without really even trying, so there's that....

- - - Updated - - -

Oh, and as far as "you cannot exceed the EPA rating" that's total and complete BS. You absolutely can.

[Ape Factory]

In all fairness, the onboard computer is wildly optimistic. Only way to figure out what your car is actually getting is to fill the tank up (the same way each time, like the first shutoff "click"), zero out your trip mileage and then drive until you need to refill the tank. Doesn't have to be empty but a good sampling over time is going to be more accurate. Divide the mileage traveled by the number of gallons the car needed for a refill. Rinse and repeat if you follow the same pattern. I had a pretty unique opportunity of doing three fills back to back in the same day, for four consecutive days. And that's ALL highway. I get about 17-18 in normal day to day stuff.

My last tank turned out to be 21.7mpg. Not bad considering my average speed and how much I was using the go pedal to get past slower drivers.

And like I said, the 25mpg number was due to a whole host of factors including coming mostly downhill, slower than usual pace, a train of cars (aerodynamics) and no a/c on. Plus I have a ton of modifications including lightweight wheels and new tires. None of my other numbers came close to that one high reading.

[PEM]

To the two "young whippersnappers" who replied to my post - yup, I do have an S5 and not an RS so that's apples to oranges.

That line alone nullifies your initial statement saying we drive like BMW drivers considering most who commented in this thread are RS5 owners with an extra ~100hp more than you, so you generalizing us with that BMW crap is nonsense. High revving V8 + Capristo exhaust is music to the ears, and we like to share that with the rest of the world.

I exceed the speed limit by a safe and non-assholish amount everywhere I drive (5-10 over with the cruise on, usually). Like I said, I don't baby the car. And yes, this is through the onboard computer - why? Are they somehow known to be "optimistic"? Why would I bother to do math when I have a flashy math box right in front of my face?

It sounds like Ape Factory is pretty damn close to my numbers without really even trying, so there's that....

- - - Updated - - -

Oh, and as far as "you cannot exceed the EPA rating" that's total and complete BS. You absolutely can.

I rarely use cruise control since my drives are generally less than 30 minutes long. Even in my longer drives of 90 miles I don't use the cruise control. The only time I actually use it is at night when going on a 180 mile drive out of town. So to me, putting on cruise control is babying the car because you're not doing anything but going straight at a constant speed, which helps your fuel efficiency a lot compared to someone stopping and going. Also, someone using CC at 55mph will use less fuel than someone going 80mph. Your 5-10mph over the speed limit is something that I only do when I'm stuck behind someone doing that sort of speed.

The computer is very optimistic. The computer will sometimes say 24mpg, but overall my average after a fillup and by doing this "math" is somewhere between the 17-21mpg range depending on if I did more DD or highway cruising. Hell, after a refill my computer will say my estimated range is somewhere in the mid 300s. I have never seen anything above 260 miles before having to fill up.
EPA estimates are based on real world scenarios, not someone babying the car by hypermiling. I'm sure someone can get into the 30mpgs in an RS5 by going downhill and tailgating a semi truck the entire way if that's their prerogative.

Again, it all comes down to the driver, the car, and the commute. You can't compare S5 numbers with RS5 numbers since the power is different and you in an RS5 might get similar values as the rest of us. The way I drive an Accord is much different than how I drive my RS5.

[MonsoonB8S5]

Just my useless opinion... I don't get why one would spend so much money on a car and worry about MPG? Surely if one can afford insurance, any payments, maintenance, etc - one can afford the gas? Gotta pay to play! I don't mean or intend to be condescending, just don't really understand it. If I had a very long commute every day, I could see it, but then I probably wouldn't even consider a V8 car period.

FWIW, I get 17mpg in my 398bhp/430btq V8 S5. I drive it like I stole it, in manual mode, 100% of the time. Car is so stupidly loud, I like hearing it :)

[PEM]

^ my man. I can't agree more.

[Darel]

In all fairness, the onboard computer is wildly optimistic. Only way to figure out what your car is actually getting is to fill the tank up (the same way each time, like the first shutoff "click"), zero out your trip mileage and then drive until you need to refill the tank. Doesn't have to be empty but a good sampling over time is going to be more accurate. Divide the mileage traveled by the number of gallons the car needed for a refill. Rinse and repeat if you follow the same pattern. I had a pretty unique opportunity of doing three fills back to back in the same day, for four consecutive days. And that's ALL highway. I get about 17-18 in normal day to day stuff.

My last tank turned out to be 21.7mpg. Not bad considering my average speed and how much I was using the go pedal to get past slower drivers.

And like I said, the 25mpg number was due to a whole host of factors including coming mostly downhill, slower than usual pace, a train of cars (aerodynamics) and no a/c on. Plus I have a ton of modifications including lightweight wheels and new tires. None of my other numbers came close to that one high reading.

Well, if the onboard computer is really off by that much I'll just have to stand corrected. Maybe I'm not doing as well as I thought. I don't really see myself caring enough to do the math / miles to figure out a good number, especially since I like the ones I get. :) All that really matters to me is my gas consumption got cut nearly in half since I bought the S5 to use as a DD. Insurance....that's another matter.

[PEM]

Well, if the onboard computer is really off by that much I'll just have to stand corrected. Maybe I'm not doing as well as I thought. I don't really see myself caring enough to do the math / miles to figure out a good number, especially since I like the ones I get. :) All that really matters to me is my gas consumption got cut nearly in half since I bought the S5 to use as a DD. Insurance....that's another matter.

True that brother. As long as we enjoy the cars, screw the gas mileage! It's all about the smiles per gallon lol

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[BigAngryBananas]

In all fairness, the onboard computer is wildly optimistic.

Mine is hilariously optimistic. The majority of my driving is commuting and cruising interspersed with moments of full-fledged moron. Computer usually reads anywhere between 8.6 - 13.5 L/100km (27 - 17 mpg). After filling up and running the numbers manually, I'm actually seeing 17+ L/100km (14 mpg)

[Xyrian]

Just got an RS5 myself and I was debating between S5 and RS5 as well. Be prepared to buy gas a lot.. the RS5 drinks gas like it is going out of style (if you’re going by smiles per gallon type of driving). I chose the RS5 just based on how much more visceral the experience is, the S5 is much more tame by comparison (I understand mods can change the actual real life speeds.. but that 8250 rev limit is incredible). Good luck on your choice!

[snocat17]

Just my useless opinion... I don't get why one would spend so much money on a car and worry about MPG? Surely if one can afford insurance, any payments, maintenance, etc - one can afford the gas? Gotta pay to play! I don't mean or intend to be condescending, just don't really understand it. If I had a very long commute every day, I could see it, but then I probably wouldn't even consider a V8 car period.

This is exactly why I changed from a Hyundai Veloster to my S5. Before I bought the Veloster, I was driving my truck 75 miles (1.5 hours) each day and getting about 13 mpg. I decided I wanted to spend about $25K on a new Veloster that was supposed to get 36-38 mpg.

After 2.5 years with it and averaging 34-36 mpg, I absolutely hated it. I decided it was worth a little extra money to get something I liked spending at least 1.5 hours in every day and still get decent gas mileage. I "settled" on an S5 Cab due to the slightly higher mpg and lower maintenance costs than the RS5. So far, I have been extremely pleased with the balance in comfort, performance, and cost.