What kind of MPG do you get on your S4?

[Rez90]

I've got almost 1000 miles on my car and i filled up today and actually calculated my MPG's....

I put in 13 gallons and had 215 miles on the tank which equates to about 16.5 miles per gallon.

Seems low. I was expecting in the low 20's.

My car is a 6-speed.

What do you guys average?

Thanks.[:)]

[rich-in-cincy]

I get 20mpg mixed. If I behave on the highway, I can get 27mpg (going 70 to 75).. Winter blend gas isn't helping the numbers.

[boss2k]

15-16 city
25 -- freeway driving during long drives

dont expect anywhere near 20's in city driving

[droopy1592]

Summer gas I've done 27.4 hwy and 23 mixed. Now I'm doing 24 hwy and 21.4 mixed on this winter crap. 6 mt 2013 42k burns no oil.

[amz]

You guys might find this useful

http://www.fuelly.com/car/audi/s4

[CaptSlow]

25-26 highway

17-19 city

20-22 mixed

[jygesq]

16-16.5 MPG short haul driving in winter. !7.4 with some short highway legs Have not done any extended highway driving yet. Driving in D .
divided miles traveled by fuel used, not by display. STRONIC

[jlaudio]

2700 mile trip from CT to UT i averaged 29mpg @ 70-75MPH avg. granted the midwest from PA to WY is basically flat.
14-16 MPG around downtown SLC, all stop and go. it doesn't help that my car doesn't warm up by the time i get to work.

'10 6MT

[skiptowncat]

28-30 highway
17-19 city
22 avg.

dsg

[Maitre Absolut]

city : 12mpg (260km -160miles on my last tank LOL )
hwy : 21mpg

i do alot of city driving but not many clicks. i blame winter and my AWE :)

[rich-in-cincy]

city : 12mpg (260km -160miles on my last tank LOL )
hwy : 21mpg

i do alot of city driving but not many clicks. i blame winter and my AWE :)

YIKES!!!!!

[martziniuk]

25mpg winter,30mpg summer. Motorway after a 150mile run can show 39mpg on the display. Uk gallons

[Maitre Absolut]

YIKES!!!!!

im used to it, my last car did more or less the same (slightly better). i only have 4K km, im hoping it gets better lol

i don't know how you guys get better than mpg on they highway, the instantaneous readout while i'm cruising at 120km/h (75mph) is at best 10L/100 (23.5mpg)

[Dr GP]

I have had B8 s4s and get pretty much the same gas mileage on all 3. 17-18 in city. Never more than 24 on the highway @ 75-80 mph. The OP is disappointed. BUT if he bought this performance car with any expectations of routinely getting 20mpg or more, he will be disappointed. This is a supercharged car that begs to be driven aggressively. Aggressive driving does not lead to good gas mileage

[IanCH]

lol 22 overall? I think you guys are reading your gauges wrong, or not driving hard enough. The fuelly average is just about 20 mpg and I personally never really averaged above 18 because I drive my car like an S4 and not a prius.

[Rez90]

The OP is disappointed. BUT if he bought this performance car with any expectations of routinely getting 20mpg or more, he will be disappointed. This is a supercharged car that begs to be driven aggressively. Aggressive driving does not lead to good gas mileage

Oh wow I had no idea. Thanks so much for the insightful and honest info. I went back and fourth between the S4 and a Honda fit and decided on the Audi because it has dual zone climate control whereas the Fit was only one zone.

Guess I should have stuck with the Fit for the MPG.

If only someone had told me before I bought the Audi that it was such a performance oriented vehicle.. . I would have never bought it.....shucks.

[s14roller]

I have had B8 s4s and get pretty much the same gas mileage on all 3. 17-18 in city. Never more than 24 on the highway @ 75-80 mph. The OP is disappointed. BUT if he bought this performance car with any expectations of routinely getting 20mpg or more, he will be disappointed. This is a supercharged car that begs to be driven aggressively. Aggressive driving does not lead to good gas mileage

OP has a slightly different idea of what a performance car is...I know this because his GTR makes over 1000hp. NBD.

[Zaider]

I average 11.9L/100km (19.8mpg) according to my app.

Ballparking it, id say I average:
City: 14L/100km (16.8mpg)
Highway: 10L/100km (23.5mph)

I dont drive to work, so the car actually gets more highway than city... Installing my roof-top ski box (Inno brand) just dropped my recent fuel economy though. I saw 11.5L/100km on my trip to the mountains last weekend.

[chaos2984]

When my car was new under 500 miles i hit 28mpg easy on the hwy. Right now I'm getting like 17 mpg or so with city driving. And like little over 20 mpg combined. I easily avg over 25mpg on the hwy.

You have to remember since this is a FI engine with the engine building boost will kill your mpg's

[Johnnycash]

not as much as i expected based off of the estimates on the buildsheet/window sticker, i understand there is a lot of variables at play here.

i get 22 average in non winter conditions, about 60/40, 70/30 hwy/city miles, i recently started burning non-oxygenated fuel to see if there is any performance/ fuel economy benefits, especially because the winter blended gas with ethanol in it is shit...

on my second tank of non-ethanol gas and my mpg is good, but i went on a road trip last weekend so the numbers are skewed, will need more time to get a baseline average.

[BP11]

lol 22 overall? I think you guys are reading your gauges wrong, or not driving hard enough. The fuelly average is just about 20 mpg and I personally never really averaged above 18 because I drive my car like an S4 and not a prius.

This. I get between 12-15 city, and rarely over 22 on the highway. Pay to play, and who gives a fuck about MPG's anyways? Its an S4 for christ sakes

[Rez4]

9 fuel ups - Averaging 18.7MPG - Best 23MPG

[stoked_S4]

Mine shows 16.1 on fuelly. best I got was 27mpg "normal" driving to VA Beach from NJ past summer. Worst was 9mpg "normal" city driving.

[sirsycott]

1 City, 0 Highway

[rich-in-cincy]

im used to it, my last car did more or less the same (slightly better). i only have 4K km, im hoping it gets better lol

i don't know how you guys get better than mpg on they highway, the instantaneous readout while i'm cruising at 120km/h (75mph) is at best 10L/100 (23.5mpg)

cruise control!!

[bbhbba]

~ 20mpg (75% city/25% hwy)

[Waaazooo]

19.56 on 50/50 mix of city and hwy.


Sent from my iPhone using Tapatalk

[BAHNSTORMER]

My first tank, with mixed roads for my typical commute, calculated at 17.9mpg. DSG & Comfort setting. Winter blend gas is the suck.

EDIT: My second tank improved to 18.6

[SForePlayin']

I've only got a couple of tankfuls into my fuel app. It's showing that I'm averaging 17.27 mpg.

[chaos2984]

Id have to say form he data from NORMAL driving you should average around 20mpg +- I got just recently 27 mpg on hwy with shitty winter E15 fuel. We have all E15 fuel around here its hard to find fuel around here with MTBE vs ethanol. But even so I got 28mpg with E15 summer fuel.

You have to look at their numbers are pretty much complete best case scenario. 100% flat hwy road on cruise control. And the city is slow but normal stop and go spots no traffic.

But unless your getting like 15 or so on the hwy with cruise control then i wouldn't worry about anything.

[Midnight_Rider]

10mpg. If I'm good, 16.5mpg on comfort setting.

I like my compression breaking.

[RickFLS4]

80% highway mostly 75-85 MPH:

http://tapatalk.imageshack.com/v2/15/02/10/88b4fb6d7cf1165f37280a1047f785a0.jpg

Trip computer is consistently overstated so if you want to know check it manually.


Sent from my iPad using Tapatalk

[Dr GP]

Oh wow I had no idea. Thanks so much for the insightful and honest info. I went back and fourth between the S4 and a Honda fit and decided on the Audi because it has dual zone climate control whereas the Fit was only one zone.

Guess I should have stuck with the Fit for the MPG.

If only someone had told me before I bought the Audi that it was such a performance oriented vehicle.. . I would have never bought it.....shucks.

You are welcome

[SeaBassHWD]

I drive like a responsible adult and I average 22 mpg doing 70/30 highway/city.

[IanCH]

I drive like a responsible adult and I average 22 mpg doing 70/30 highway/city.

Clearly should have just bought an A4. [az]

[hotdog453]

Best I ever got was 25MPG after a back-and-forth stint at, literally, 55MPH. 6MT.

Normal average is 20MPG.

[MVR 155]

In the warm months I get 19-21mpg's with the majority (~75%) being around town driving. In the winter months I get 17-19mpg's. On tanks where I do more highway driving those numbers obviously jump up.

[MrFunk]

You guys might find this useful

http://www.fuelly.com/car/audi/s4

+1

Average 18.3
Best 24.3

What's interesting is my best was in the winter on a stage 2 tune... obviously all highway.


OP - use Fuelly if you want to track your mpg's... it's a nice app and easier than doing that math yourself. Obviously it charts it long term also which would be a PITA to do manually...

[mr shickadance]

23-26 during the winter, and 28-30 during the summer.

i don't have a lot of winter driving, i don't really drive the car that hard , and my commute is a 22 mile stretch of winding backroads that rarely sees speeds over 50

obviously when the car is flogged it dips down, but 98% of my driving I see the numbers stated above.

[05blacks4]

always drive in dynamic mode

14-15 city for 91 octane/E85 mix
16-17 city full 91 octane
25-27 highway 91 octane

[Black_V!per]

http://badges.fuelly.com/images/smallsig-us/247455.png (http://www.fuelly.com/car/audi/s4/2014/BlackViper/247455)

[chaos2984]

+1

Average 18.3
Best 24.3

What's interesting is my best was in the winter on a stage 2 tune... obviously all highway.


OP - use Fuelly if you want to track your mpg's... it's a nice app and easier than doing that math yourself. Obviously it charts it long term also which would be a PITA to do manually...

That statement doesn't really make much sense. I would have to say your wrong or you just driving it differently or something. I would have to say compare it to summer driving and run same driving style. The only thing I can maybe make an argument for is if your running summer tires in the summer which are super sticky and providing more rolling resistance than your tries in the winter. Simple principle of physics tells you, that you will get slightly less mpg in the winter due to the density of air in the winter vs summer. You have more oxygen in the winter because you have more mocules of air in that same volume as you did in the summer due to temp. With more volume of oxygen being induced into the cyl your going to need slightly more fuel to get the correct burn. Just saying that if your running all the same stuff as you do in the winter and drive the same you should by theory get a little less mpg than you do in the summer.

[Trevor08]

I get ~24 per gallon on a tank of mixed driving.

[agent47]

That statement doesn't really make much sense. I would have to say your wrong or you just driving it differently or something. I would have to say compare it to summer driving and run same driving style. The only thing I can maybe make an argument for is if your running summer tires in the summer which are super sticky and providing more rolling resistance than your tries in the winter. Simple principle of physics tells you, that you will get slightly less mpg in the winter due to the density of air in the winter vs summer. You have more oxygen in the winter because you have more mocules of air in that same volume as you did in the summer due to temp. With more volume of oxygen being induced into the cyl your going to need slightly more fuel to get the correct burn. Just saying that if your running all the same stuff as you do in the winter and drive the same you should by theory get a little less mpg than you do in the summer.
Maybe he got the tune later just before winter. On my A6, I came close to 26mpg in winter which I have never seen personally. And it was on the same summer tires. Last winter I did not have a tune and I avgd about 23mpg max.

TortoiseA6

[MVR 155]

23-26 during the winter, and 28-30 during the summer.

i don't have a lot of winter driving, i don't really drive the car that hard , and my commute is a 22 mile stretch of winding backroads that rarely sees speeds over 50

obviously when the car is flogged it dips down, but 98% of my driving I see the numbers stated above.

That is some good MPG!!! I have noticed that this car will achieve fantastic MPG's when you keep the speed in the 45-55mph range with minimum stop/go.

[mr shickadance]

That is some good MPG!!! I have noticed that this car will achieve fantastic MPG's when you keep the speed in the 45-55mph range with minimum stop/go.

at 50-55 the car puts itself into 7th gear and the rpm is pretty low, given my commute does not have many hills it's sort of a perfect storm of good mpg conditions.

[Li ls4]

15 mpg with all city driving. haven't done a road trip in the s4 yet.

[SeaBassHWD]

Clearly should have just bought an A4. [az]
Then I'd just be a poser on the best subforum of AZ. Also, the A4 won't do it for me on the weekend canyon runs ;)

[Frinkferta]

23 MPG average, 91 octane, DSG

[SDV325]

mostly city driving 22-26 MPG, depending on traffic and casual driving. As soon as i open it up it goes down the toilet quickly

Highway driving can definitely get close to 30-32

[Fife]

23 MPG mixed driving winter - 25 MPG summer


Best - 29 MPG at 82 mph through multiple tanks of gas.

[B8Addict]

19MPG city, 23 on highway as far as I know. Mixed driving. Don't really care since it has more power and a shit load more torque then my G37xS and i would get 16MPG on that.

[TexasDfwS4]

I just got a tune so these numbers will change. My old commute was all streets no highways and I could get 19.5 more fun at 14-15 mpg. My new commute is 22 miles one way and all highway, and with no fun what so ever I got 27mpg that tank worst week ever. I would say that if Mpg is what your after this car will give you what is advertised, but you probably should consider the A4 and forgo all the fun.

[SteveYem]

I brought this up in another thread (btw, I try to bump old MPG threads instead of creating another one), and my question was specifically regarding why my 2015 S4 6MT gets consistently 10-15% less gas mileage than my 2012 S4 6MT did (as tracked by Fuelly). The feedback I got is that the decreased efficiency is due to the factory-supplied oil being a higher viscosity than the recommended oil weight for all subsequent oil fills, and that likely after my 5000 mile oil change (I'm currently at 4700 miles) my gas mileage will go up. I hope that's the case.

[schirm]

Like 22mpg or about 240 miles to a tank on average. If I do a long road trip I will get about 340 miles to a tank.

[MVR 155]

Like 22mpg or about 240 miles to a tank on average. If I do a long road trip I will get about 340 miles to a tank.

If you're only getting 240 per tank and running it down close to empty you are likely not seeing 22mpg's. 240/22 is 10.9 gallons of fuel....... The tank has a capacity of 16.9 gallons and typically when it gets down to where the light comes on you should be putting in ~15 gallons to fill up. Best way to calculate the MPG is to fill up, set the trip to 0, drive until you need fuel, divide the total miles driven on your trip by the number of gallons of fuel you put in to fill up. This will give you your exact MPG. I have found that the DIC on the car is a bit optimistic by close to 1mpg at times.

[schirm]

If you're only getting 240 per tank and running it down close to empty you are likely not seeing 22mpg's. 240/22 is 10.9 gallons of fuel....... The tank has a capacity of 16.9 gallons and typically when it gets down to where the light comes on you should be putting in ~15 gallons to fill up. Best way to calculate the MPG is to fill up, set the trip to 0, drive until you need fuel, divide the total miles driven on your trip by the number of gallons of fuel you put in to fill up. This will give you your exact MPG. I have found that the DIC on the car is a bit optimistic by close to 1mpg at times.

Yeah I know how to calculate it myself, I never really wait for the light to tun on once I get under a 1/4 tank I usually fill it. DIC says 22-23mpg. Road trips will say 26. If I fill it when my light comes on it usually puts about 13-14 gallons in. You can go about 40 miles once it says 0 miles to empty so there is plenty of gas in there after the light goes on.

[hotdog453]

If you're only getting 240 per tank and running it down close to empty you are likely not seeing 22mpg's. 240/22 is 10.9 gallons of fuel....... The tank has a capacity of 16.9 gallons and typically when it gets down to where the light comes on you should be putting in ~15 gallons to fill up. Best way to calculate the MPG is to fill up, set the trip to 0, drive until you need fuel, divide the total miles driven on your trip by the number of gallons of fuel you put in to fill up. This will give you your exact MPG. I have found that the DIC on the car is a bit optimistic by close to 1mpg at times.

Are people actually doing the math here, when they state MPGs? Especially higher ones (ie, 26,27, 28MPG?) Saying things like "240 per tank or 22MPG", to me, sounds like you just assumed it was 11 gallons or something, shrug and promote that little nugget of assumption into the realm of fact.

[schirm]

Are people actually doing the math here, when they state MPGs? Especially higher ones (ie, 26,27, 28MPG?) Saying things like "240 per tank or 22MPG", to me, sounds like you just assumed it was 11 gallons or something, shrug and promote that little nugget of assumption into the realm of fact.

I didn't assume. I go by what the DIS says. I don't fill up when completely empty. Once I get under 1/4 tank I fill up, I do not run it low. So there is about 4 gallons a 1/4 tank. once I get under 1/4 of gas I fill it,so I used about 12 gallons of gas in 240 miles is about 20MPG. Not too far off from the DIC

[mr shickadance]

calculated numbers here based off of miles driven and gas guzzled.

however given my pretty standard commute and that my driving habits really don't change much during the week i have found my display average MPG is actually pretty close to actual, about 1-2mpgs difference really.

[chaos2984]

Maybe he got the tune later just before winter. On my A6, I came close to 26mpg in winter which I have never seen personally. And it was on the same summer tires. Last winter I did not have a tune and I avgd about 23mpg max.

TortoiseA6

Interesting. Have you run with your tune in the summertime yet and see what you get for mpg? Would be interesting to see if the tune would give you better mpg in the winter opposed to summer time if your driving the exact same on that tank. That would go against principal lol. I know that some of the tunes claim they increase mpg while just cruising.

[doug97gxe]

23-26 during the winter, and 28-30 during the summer.

i don't have a lot of winter driving, i don't really drive the car that hard , and my commute is a 22 mile stretch of winding backroads that rarely sees speeds over 50

obviously when the car is flogged it dips down, but 98% of my driving I see the numbers stated above.

RT 7?

[Thumper3]

lol 22 overall? I think you guys are reading your gauges wrong, or not driving hard enough. The fuelly average is just about 20 mpg and I personally never really averaged above 18 because I drive my car like an S4 and not a prius.

Funny thing, just because a car CAN do something doesn't mean you have to use it all the time. Not all of us live stoplight to stoplight 11 seconds at a time.

I have averaged 22MPG with mixed city and highway commute with little if any traffic before. My default is Individual with suspension/steering in dynamic and engine/trans in comfort, and the gearbox set to manual.

The S4 is actually a very nice cruiser with a fire breathing lunatic hidden underneath, but no reason to not just drive like a normal person when there's no need.

Although I do always downshift when rolling past a Prius. [:D]

[SteveYem]

Are people actually doing the math here, when they state MPGs? Especially higher ones (ie, 26,27, 28MPG?) Saying things like "240 per tank or 22MPG", to me, sounds like you just assumed it was 11 gallons or something, shrug and promote that little nugget of assumption into the realm of fact.

I don't do the math long-hand, but I use Fuelly to track miles driven vs. gallons filled. Most times I use the same pump at the same gas station on my way home from work to try to eliminate that variable. Per fuelly, gas mileage on my <5000 mile 2015 S4 is 10-15% lower than my > 40000 mile 2012 S4 was.

[chaos2984]

I don't do the math long-hand, but I use Fuelly to track miles driven vs. gallons filled. Most times I use the same pump at the same gas station on my way home from work to try to eliminate that variable. Per fuelly, gas mileage on my <5000 mile 2015 S4 is 10-15% lower than my > 40000 mile 2012 S4 was.

I love that there is an app out there for this when its easy math to figure out your mpg pretty closely. The car comes with a trip odo. But I guess the app just stores the data as a notepad would. My parents actually kept track of it on a notepad before cell phones. lol. Well with your 12 and 15 are they both DSG or was one DSG and one manual? That could explain the difference right there. The DSGs get better economy than the sticks because of 7th gear

[MVR 155]

I love that there is an app out there for this when its easy math to figure out your mpg pretty closely. The car comes with a trip odo. But I guess the app just stores the data as a notepad would. My parents actually kept track of it on a notepad before cell phones. lol. Well with your 12 and 15 are they both DSG or was one DSG and one manual? That could explain the difference right there. The DSGs get better economy than the sticks because of 7th gear

Steve's previous car as well as his current are 6MT so it's an apples to apples comparison for him.

[agent47]

Interesting. Have you run with your tune in the summertime yet and see what you get for mpg? Would be interesting to see if the tune would give you better mpg in the winter opposed to summer time if your driving the exact same on that tank. That would go against principal lol. I know that some of the tunes claim they increase mpg while just cruising.
I saw upto 29.6mpg in summer on hwy only. City/hwy mix was 25ish usually. All of these calculated manually. Tune did bring the mpg up when cruising but everybody has their days when they wanna drive like a dbag [emoji3]

TortoiseA6

[SteveYem]

I love that there is an app out there for this when its easy math to figure out your mpg pretty closely. The car comes with a trip odo. But I guess the app just stores the data as a notepad would. My parents actually kept track of it on a notepad before cell phones. lol. Well with your 12 and 15 are they both DSG or was one DSG and one manual? That could explain the difference right there. The DSGs get better economy than the sticks because of 7th gear

I hear ya on the old fashioned way, which I used to do in every care prior to the S4....but my Fuelly app never runs out of ink or paper : ) Plus, it has the capability to spit out a graph in case you want to see your mileage performance charted out over a range of dates. I've never used that, but I used to log my hand-kept notes into a spreadsheet periodically so this saves me that time.

Both S4's are 6MT, both run with winter performance tires December thru March and summer performance tires the rest of the time, both with the same roof rack setup. The differences are that the 2015 S4 has 18" Michelin Alpin PA4 winter tires while the 2012 S4 had 19" Dunlop Wintersport 3D tires, and the 2015 S4 has sport diff while the 2012 did not. In both cases the tires were inflated to ~39 psi front and rear. Driving habits have not changed, the roads I take to work have not changed. One would think that the electric assist steering system would result in same or marginally better fuel efficiency but I am seeing very much the opposite.

I will report back after my first oil change to see if the theory regarding original oil fill viscosity vs. replacement oil viscosity holds true and makes a difference. I shoudl know within the next month.

[monomoy4]

Greatly impacted by city/highway percentages, tire inflation, temperature, as well as style of driving. I'm generally 70% highway, averaging 23 mpg overall after 10K miles driven. Winter, I'm down about 1-2 from average. Highway, I've seen as high as 32. Overall on a recent 1200 mile trip, I had 27. I use 93 octane, and keep my tires at 36F/32R.

2013 S4, S-tronic, PP, no sport diff

[IanCH]

The DIS isnt just a little bit off.... its like 10-15% off. Ppl be like "DIS says 22 its close enough..." when you really are getting about 20 or 19.5...

But who really gives a damn, gas is 2.25 a gal [drive]

[mr shickadance]

RT 7?

no i work in westport, i am driving down like black rock and 58

[doug97gxe]

no i work in westport, i am driving down like black rock and 58

Ahhhh


Sent from my iPhone using Tapatalk

[cdsvt]

Don't know, don't care. It's an S4. If I wanted to worry about fuel economy I'd drive a TDI or a hybrid.

[chaos2984]

I hear ya on the old fashioned way, which I used to do in every care prior to the S4....but my Fuelly app never runs out of ink or paper : ) Plus, it has the capability to spit out a graph in case you want to see your mileage performance charted out over a range of dates. I've never used that, but I used to log my hand-kept notes into a spreadsheet periodically so this saves me that time.

Both S4's are 6MT, both run with winter performance tires December thru March and summer performance tires the rest of the time, both with the same roof rack setup. The differences are that the 2015 S4 has 18" Michelin Alpin PA4 winter tires while the 2012 S4 had 19" Dunlop Wintersport 3D tires, and the 2015 S4 has sport diff while the 2012 did not. In both cases the tires were inflated to ~39 psi front and rear. Driving habits have not changed, the roads I take to work have not changed. One would think that the electric assist steering system would result in same or marginally better fuel efficiency but I am seeing very much the opposite.

I will report back after my first oil change to see if the theory regarding original oil fill viscosity vs. replacement oil viscosity holds true and makes a difference. I shoudl know within the next month.


Yea i would maybe think that if i didn't hit 28.x mpg with my 2014 DSG S4 before my first oil change. Thats interesting that you get better mpg in the winter than summer. I would say maybe the tire combination or something but with you running 18's in winter would increase engine rpm a little vs 19's in the summer so that doesn't help it wither lol. I find it interesting that you get better fuel mpg in the winter than summer. Ill have to pay attension once i get a tune and see what happens in winter vs summer.

[chaos2984]

Don't know, don't care. It's an S4. If I wanted to worry about fuel economy I'd drive a TDI or a hybrid.

hahaha thats y my beater is a 97 honda civic dx lol.

[BAHNSTORMER]

19.1 on my 3rd tank.

[AKPS4]

is anyone else suffering from poor performance and gas mileage from possible crappy winter-grade gasoline? With the arctic temperatures we have been having here in the NE i feel like the cars performance has been dropping, which is completely backwards... initially when winter came around the cold temperatures really woke up the Stage 2+ APR tune and the car was an animal all winter. But, just recently i noticed a lack of power and reduced MPG's. I consistently use Shell 93 and no other gas, but from various Shell gas stations as i have been traveling between Long Island and CT for work.

I am curious if anyone else is noticing any similar symptoms. I have heard of similar conditions in previous winters, which have eventually been directed towards "winter" gas but I just wanted to get some more opinions/facts on this.

[schoi623]

2011 s4 with GIAC stage 1
Avg: 14-15 mpg

I think there might be something wrong with my car.


Sent from my iPhone using Tapatalk

[mr shickadance]

is anyone else suffering from poor performance and gas mileage from possible crappy winter-grade gasoline? With the arctic temperatures we have been having here in the NE i feel like the cars performance has been dropping, which is completely backwards... initially when winter came around the cold temperatures really woke up the Stage 2+ APR tune and the car was an animal all winter. But, just recently i noticed a lack of power and reduced MPG's. I consistently use Shell 93 and no other gas, but from various Shell gas stations as i have been traveling between Long Island and CT for work.

I am curious if anyone else is noticing any similar symptoms. I have heard of similar conditions in previous winters, which have eventually been directed towards "winter" gas but I just wanted to get some more opinions/facts on this.

your logic is a bit backwards.

yes, cold air generally means better performance, but cold winter, means winter gas. As a result, more butane is added to gasoline to keep it more stable in colder temps, this reduces efficiencies in the gasoline, leads to less power and poor MPGs.

this is why initially in the winter you found your car performing so well, the tanks in the ground did not yet have the winter gas in them. Winter gas is not a myth, it's very much a real thing, and directly related to how much more butane is in winter gas over 'normal' gas.


Shell, mobil, exxon, it's all the same stuff, you will not see any better performance with any other gas station's gas, it's the winter-mix. also, those additives that shell and other companies tout as being good for the car? those are all required by law, shell just has a better marketing team that basically said "hey, we have to pay for these additives anyway, mine as well try and push them as something awesome"

[jygesq]

I disagree with you. My 2000 528 BMW always ran smoother and got higher mileage with Shell 93. I can't compare it with my S4 as it is only feed shell 93 since new 1300 miles ago

[SteveYem]

Don't know, don't care. It's an S4. If I wanted to worry about fuel economy I'd drive a TDI or a hybrid.

I don't track my gas mileage because I'm trying to achieve high fuel efficiency. I track it because it is a simple diagnostic data collection that could indicate whether something is going wrong in the engine. If you are regularly recording the data and seeing 20 mpg average and then you notice it drop to 15 mpg average and stay there with all other equipment and conditions unchanged, it would be a good idea to get the car into the shop to see if there is anything going wrong with it.

[VenturiRS]

I don't track my gas mileage because I'm trying to achieve high fuel efficiency. I track it because it is a simple diagnostic data collection that could indicate whether something is going wrong in the engine. If you are regularly recording the data and seeing 20 mpg average and then you notice it drop to 15 mpg average and stay there with all other equipment and conditions unchanged, it would be a good idea to get the car into the shop to see if there is anything going wrong with it.

Bingo.

[AKPS4]

your logic is a bit backwards.

yes, cold air generally means better performance, but cold winter, means winter gas. As a result, more butane is added to gasoline to keep it more stable in colder temps, this reduces efficiencies in the gasoline, leads to less power and poor MPGs.

this is why initially in the winter you found your car performing so well, the tanks in the ground did not yet have the winter gas in them. Winter gas is not a myth, it's very much a real thing, and directly related to how much more butane is in winter gas over 'normal' gas.


Shell, mobil, exxon, it's all the same stuff, you will not see any better performance with any other gas station's gas, it's the winter-mix. also, those additives that shell and other companies tout as being good for the car? those are all required by law, shell just has a better marketing team that basically said "hey, we have to pay for these additives anyway, mine as well try and push them as something awesome"

Thanks. My logic was actually spot on as all I was referring to was that even though it was still cold or getting colder, not warmer, the performance was getting worse. That is backwards....

Anyways, I figured the winter gas mix was the culprit. Oh well.

[mr shickadance]

Thanks. My logic was actually spot on as all I was referring to was that even though it was still cold or getting colder, not warmer, the performance was getting worse. That is backwards....

Anyways, I figured the winter gas mix was the culprit. Oh well.


right, and all is said was that your performance is suffering as a result of winter gas, not cold air, which is what you said was surprising to you (that colder temps meant decreased performance)

so yes, logic was right, just did not factor in outside events.

[PSUGOLD]

2011 s4 with GIAC stage 1
Avg: 14-15 mpg

I think there might be something wrong with my car.


Sent from my iPhone using Tapatalk

I am getting 15 or so now in the winter. GIAC Stage 1 also.

[bombdiggity]

2010 S4 with dsg and 18" tires. Tracked with gas tracker. Apr stage 1, I was averaging 22 mpg. When I went stage 2, it's 19.1. I do 70% highway and 30% city. I would say my driving style is fairly aggressive. 70mph actually means 85. [emoji16]


Sent from my SlimePhone using Tapatalk

[Biggame]

26.8mpg pure hwy... 15-17mpg in the city... 6.4mpg on the track

[BAHNSTORMER]

Bump.

Now that the temperatures are improving, so is my mileage. It calculated at 21.9 mpg today, up from 19.8 the last few weeks. My commute is a mix of rural two lane, interstate highway, and thru a small town.

[zps123]

got 12 on the way back from class today because i'm done with finals lol

[TexasDfwS4]

I just tested my tune for gas mileage and got 26.7 70%-80% highway. but that said I will never drive like that again!

[jpog]

Had a really positive experience with my relatively new S4 today, so I thought I would contribute here so it would be available for those tracking the thread. Here are the details:

2015 6-speed manual
Drove from Huntsville, AL to Raleigh, NC
65-70 most of the way
Lots of significant elevation changes, especially along I40 between Knoxville and Asheville
Indicated 33.1 mpg for the trip total
Here is a pic about &0% through the trip when it was maxed at 33.6

http://i860.photobucket.com/albums/ab166/jpog/My%20Old%20Cars%20and%20Bikes/3EBC2BFE-1EBE-4165-8C99-ECF0C7A16FC2.jpg (http://s860.photobucket.com/user/jpog/media/My%20Old%20Cars%20and%20Bikes/3EBC2BFE-1EBE-4165-8C99-ECF0C7A16FC2.jpg.html)

[fitzydude]

That's about what I see with my 6mt on the interstate! They say to reduce what the display says by 10% or so for Evap.

http://i274.photobucket.com/albums/jj249/fitzydude/IMG_20141017_084300424.jpg

[jygesq]

That's about what I see with my 6mt on the interstate! They say to reduce what the display says by 10% or so for Evap.

http://i274.photobucket.com/albums/jj249/fitzydude/IMG_20141017_084300424.jpg Your cluster is showing "1" in red that means your are not showing

average mileage from last fill up. You need to be on display "2" that is average. The "1' display is some crazy average system since car last started.

[fitzydude]

Your cluster is showing "1" in red that means your are not showing

average mileage from last fill up. You need to be on display "2" that is average. The "1' display is some crazy average system since car last started.

You keep using that word. I do not think it means what you think it means.

You can reset your moving average, in that case I would cruise at various speeds for an hour and take note of the mpg. I realize a lot of people here don't like the readout. I hand calculated 29mpg for that trip testing my typical cruise speeds: 62, 70, 75, 80+.

[mojangles69]

Usually get about 250 miles per tank. If mostly highway, at least 300 miles.

[Silverbullet S4]

300 miles to a tank if I'm lucky and average around 21mpg mixed driving. I do have a lead foot and definitely don't baby it. No carbon buildup in my ride! ;-)

[Johnnycash]

That's about what I see with my 6mt on the interstate! They say to reduce what the display says by 10% or so for Evap.

http://i274.photobucket.com/albums/jj249/fitzydude/IMG_20141017_084300424.jpg

i see a dash that needs some TLC and needs to be dusted regularly, clean that bad boy!

[mgaman]

I get around 200-220 a tank. All of my drive is to work and back and errands around town, most of it stuck in the quagmire that is stupid Anchorage drivers.

On the rare highway trip to I'll get 26-27.

[Mr.Tan]

lately since I installed my intake I've been getting 15-16 city driving.. its hard not giving it the beans now to hear the noise.

maybe once the enjoyment of the sound wears off it'll go back up. Still beats the 11-12mpg I was getting with my jeep wrangler

[BAHNSTORMER]

You keep using that word. I do not think it means what you think it means.

You can reset your moving average, in that case I would cruise at various speeds for an hour and take note of the mpg. I realize a lot of people here don't like the readout. I hand calculated 29mpg for that trip testing my typical cruise speeds: 62, 70, 75, 80+.

Position 1 is the average of the last 30 miles or so (IIRC) and will reset itself depending on the last time the car was started. Position 2 is a per tank average if you reset when you fill up. If you don't reset, it will be the average from the last reset.

I always have mine on 1 and I only cycle to 2 to see what the tank got. Then I reset 2 and cycle back to 1. Rinse. Repeat.

[sfletcher]

Position 1 is the average of the last 30 miles or so (IIRC) and will reset itself depending on the last time the car was started..

I don't have my manual in front of me but I'm pretty sure that all 3 of my Volkswagens and my Audi behave the same way.Trip meter 1 is the average since trip meter 1 was reset. It resets itself at startup if the car has been shut down for 2 hours or more. You may also reset Trip 1 at any time. Trip 2 never resets itself until the number of trip 2 hours rolls over while driving - I think the hours roll over at 999. You can reset Trip 2 any time you wish also. Trip 1 is intended to measure this trip and Trip 2 is intended to measure since whenever you last reset it.

[Brother Owl]

^^ This

[Johnnycash]

why is nobody else addressing the elephant in the room? that dash is mad dusty! unacceptable imo

[fitzydude]

why is nobody else addressing the elephant in the room? that dash is mad dusty! unacceptable imo

Meh, Texas is mad dusty and I always roll with the windows down fo sho.

[MrFunk]

why is nobody else addressing the elephant in the room? that dash is mad dusty! unacceptable imo

Hahaha!!!


My $0.02: The computer or cluster gauge for mileage (no matter what setting you are in) is never accurate. I track my mpg with Fuelly... when compared to the cluster it's never the same. The cluster always shows high - way high...
My best MGP ever 24.3MPG pure highway... that's the best I've gotten in 4 years of ownership... so I find it very hard to believe anyone is truly getting 33+mpg...

I have a buddy who claims he gets 45mpg in his GTI... he'll take pictures of his cluster as proof... I had him use simply math on 2 fill ups and he was actually only getting mid 20's. The cluster reading is a pipe dream.

My average over the last 4 years of tracking is 18.2mpg

[Johnnycash]

Meh, Texas is mad dusty and I always roll with the windows down fo sho.

gotta dust that bad boy weekly boss.

[BMAudi]

Trip Odometer ÷ Gallons = MPG . Reset your odometer at fill up.

[jpog]

I anticipated this conversation and tracked miles and gallons manually. 303 miles took 9.86 gallons top off to top off. 30.7 actual from Asheville, NC to Huntsville, AL through the mountains and road construction.