From S4 to RS3... better fuel economy?

[SanS4]

Hi guys,

My GF will make the switch from the B8 S4 to the RS3... after 15 months of S4 ownership she's tired of always fueling the car and she hates the bad fuel economy of the S4 !! From the information i was able to gatter i think the turbo engine of the RS3 should give a better fuel economy in overal normal driving conditions correct?

RS3 owners: whats your city/highway MPG or L/100km average with the car?

Thanks

[RSKYBET]

I’ve hand calculated about 27.7 for highway on cruise at ~80 mph.


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[GramCracker]

Around town the 2.5T is pretty thirsty, I see about 15-18mpg. Highway is far more economical and I'll easily average around 25+mpg on a trip.

[SanS4]

I’ve hand calculated about 27.7 for highway on cruise at ~80 mph.


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Thats actually not bad !! Here in canada our highway speed limit is 60mph so we usually drive at 70ish i guess it would be somewhere around 30mpg based on your calculation !!

With the S4 she gets about 18mpg city and about 25mpg highway its still a good difference

[S3DUDE]

I have RS3 but I also had my wife's A6 supercharged (APR stage I) less than 6 months ago. the A6 would get us 18-19 MPG in the city and around 30-31 mpg on the why(75mph @1800 in 8th gear), the car weighted 4200lbs. The S4 has the same engine but a DSG and it weights roughly 3800-lbs so I would expect the S4 to get similar or slightly better.

As far is the RS3, I get 19-20 mpg in city when I drive it in D(comfort mode) but my wife drives it in dynamic mode ALL the time and she gets about 16mpg but she is always on the gas (I am not). I have done already a few long distance trips in Europe and also in the USA with the RS3 and I get high 20's(28-29 mpg) above 70mph.

[TheContrarian]

I haven't reset my long term fuel economy calculator since I bought the car; it is currently 14.7L/100km which is 16 mpg.

This car is only economical in a steady state cruise situation, around town it is a pig. Add in cold weather and it's like driving a V8 pickup.

[Brian@Unitronic]

Pretty similar imo

[S3DUDE]

I haven't reset my long term fuel economy calculator since I bought the car; it is currently 14.7L/100km which is 16 mpg.

This car is only economical in a steady state cruise situation, around town it is a pig. Add in cold weather and it's like driving a V8 pickup.

16 mpg is bad. My wife gets 16mpg but she is on the gas heavily and that is driving 95% in the city.

[SanS4]

Dang... i better not show the GF this tread :/ The only reason why whe said yes to buy a more expensive car was for better fuel economy... i guess it wasnt the best idea :( FML LOLL

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Pretty similar imo

Sent you a PM earlier today about a tune

[sti-tom]

I haven't reset my long term fuel economy calculator since I bought the car; it is currently 14.7L/100km which is 16 mpg.

This car is only economical in a steady state cruise situation, around town it is a pig. Add in cold weather and it's like driving a V8 pickup.

I haven't reset mine either and at 16,xxx kms I have averaged 9.7L/100km (24mpg). This includes about 10 autox's and 6,000kms worth of highway trips. I have seen 6.6l/100km (36mpg) on one 300km trip, must have had some wind at my back.

[SanS4]

I haven't reset mine either and at 16,xxx kms I have averaged 9.7L/100km (24mpg). This includes about 10 autox's and 6,000kms worth of highway trips. I have seen 6.6l/100km (36mpg) on one 300km trip, must have had some wind at my back.

We are in canada so its nice to see some L/100km data !! On average lets say with 50% highway & 50% city in normal driving condition what would be the average L/100km?

[Evilevo]

Mine is at 13k miles and have averaged 23mpg over the life of the car. I can easily get 30mpg on the highway if I stay at 70mph or so.

[SolarRS3]

I think its a pretty good car on fuel actually, I get 13L-15L/100km in winter in town. During summer I was getting 11L-13L/100km. On highway its crazy, I get around 7.5L-8.0L/100km depending on wind. But last summer I did Winnipeg - Quebec and my average was 6.9L/100km. The car I had prior was a CTS-V... that was baaad max 11-12L/100km on highway...

[Brian@Unitronic]

Dang... i better not show the GF this tread :/ The only reason why whe said yes to buy a more expensive car was for better fuel economy... i guess it wasnt the best idea :( FML LOLL

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Sent you a PM earlier today about a tune

Weird, I didn't get it. Feel free to shoot me an email [email protected]

Brian

[SanS4]

Weird, I didn't get it. Feel free to shoot me an email [email protected]

Brian

Sent you an email thanks

[Potatohead_RS3]

I'm not following how spending 10k+ difference on a new car to gain 1 mpg makes any sense

[speeddemon69]

I'm not following how spending 10k+ difference on a new car to gain 1 mpg makes any sense

Fuck the MPG lol this thing is a monster. Even if it does 1mpg less the extra power will compensate for it.


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[schwabo]

200-220 a tank... Stock car

Hwy I can get 270-290/tank


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[Skunkwerx]

Around town the 2.5T is pretty thirsty, I see about 15-18mpg. Highway is far more economical and I'll easily average around 25+mpg on a trip.

Same... Unfortunately, my daily commute is a short distance on streets so the average MPG is really bad. I am surprised with the MPG on long trips.

[Evilevo]

Around town the 2.5T is pretty thirsty, I see about 15-18mpg. Highway is far more economical and I'll easily average around 25+mpg on a trip.

You have the old 2.5T. IMO the new one gets better MPG, helped by the 7spd.

[Tax Lit]

I drive quite gently until the car's warmed up, and then when it hits 92degrees f I'm on the throttle pretty hard.

Gas mileage in the city (driving 8am and 6pm) in stop and go traffic is frankly pretty bad. It's not unusual for me to get 13 or 14 l/100km in Toronto rush hour downtown driving. I'll try to reset my trip computer and let you know what the week averages out to on Friday (all downtown driving)

On the highways, gas mileage is often under 10l/100km even when passing everyone around me. I spent a couple of hours driving like a responsible adult once and got around 7L/100km when driving 100 km/hr on rural roads.

I suggest you convince her using the government's fuel ratings.
S4 is supposed to be 13.2/11.2
RS3 is supposed to be 12.4/8.3

These are probably better numbers anyways, since some idiot who drives all aggressively might get 14/10 in an RS3 and throw your whole comparison off...

[SanS4]

I drive quite gently until the car's warmed up, and then when it hits 92degrees f I'm on the throttle pretty hard.

Gas mileage in the city (driving 8am and 6pm) in stop and go traffic is frankly pretty bad. It's not unusual for me to get 13 or 14 l/100km in Toronto rush hour downtown driving. I'll try to reset my trip computer and let you know what the week averages out to on Friday (all downtown driving)

On the highways, gas mileage is often under 10l/100km even when passing everyone around me. I spent a couple of hours driving like a responsible adult once and got around 7L/100km when driving 100 km/hr on rural roads.

I suggest you convince her using the government's fuel ratings.
S4 is supposed to be 13.2/11.2
RS3 is supposed to be 12.4/8.3

These are probably better numbers anyways, since some idiot who drives all aggressively might get 14/10 in an RS3 and throw your whole comparison off...

She will use the car in Ottawa's traffic for about 30km/day for work sometimes she was getting like 60km per 1/4 tank in the s4 driving super soft it was awfull ... im just hoping for better with the RS !!

[SanS4]

I'm not following how spending 10k+ difference on a new car to gain 1 mpg makes any sense

Its more like 12 000$ difference so if we can squeeze 2-3mpg more per tank at the end of the year its gonna be worth it compared to the previous car !!

[S3DUDE]

Its more like 20 000$ difference so if we can squeeze 2-3mpg more per tank at the end of the year its gonna be worth it compared to the previous car !!

No it wouldn't here is my reasoning:

Assuming a MPG saving of 2 mpg/per tank . Average fuel price in Ottawa is $1.23 (Canadian dollars per liter) times 3.78l(per gallon)= $4.65/galon. Calculating a poor gas consumption of 16mpg you would do 225 miles with 14 galons (full tank). if you were to fill the tank (14 gallons) with an improved fuel economy of 2MPG that would be like 252 miles per tank.

16 mpg times 14 gallons = 225 miles per tank (poor gas mileage). 14x $4.65= $65(Canadian bucks)
17 mpg times 14 gallons = 238 miles per tank (average). 6.25% gas improvement= saves $4.1 per tank
18 mpg times 14 gallons= 252 miles per tank(average) 12.5% gas improvement= saves $8.2 per tank. (your goal)
19 mpg times 14 gallons = 266 miles per tank (good gas mileage). 18.75% gas improvement = saves $12.3 per tank (your goal)
20 mpg times 14 gallons = 280 miles per tank (great gas mileage). 25% gas improvement= saves you $16.1 per tank


30km/day(what you say that she will drive)= 5x30= 150 km/week (94 miles per week), therefore

at 16 mpg commuting 30km/day you will fill the tank every 2.38 weeks , cost of filling still $65
at 17 mpg commuting 30km/day you will fill the tank every 2.53 weeks
at 18 mpg commuting 30km/day you will fill the tank every 2.68 weeks
at 19 mpg commuting 30km/day you will fill the tank every 2.82 weeks
at 20 mpg commuting 30km/day you will fill the tank every 2.98 weeks

In summary you are looking at saving somewhere between 12-18 % on gas and money so $8-12ish dollars per tank but you wouldn't have to fill that often(between 2.3 and 3 weeks) so maybe you are saving $15-$16/month on commute gas times 12 months(maybe $200/year). Not a whole lot and that is why everyone is scratching their heads on your move. Not worth it on anyones eyes unless you switch cars for performance reasons.

[SanS4]

No it wouldn't here is my reasoning:

Assuming a MPG saving of 2 mpg/per tank . Average fuel price in Ottawa is $1.23 (Canadian dollars per liter) times 3.78l(per gallon)= $4.65/galon. Calculating a poor gas consumption of 16mpg you would do 225 miles with 14 galons (full tank). if you were to fill the tank (14 gallons) with an improved fuel economy of 2MPG that would be like 252 miles per tank.

16 mpg times 14 gallons = 225 miles per tank (poor gas mileage). 14x $4.65= $65(Canadian bucks)
17 mpg times 14 gallons = 238 miles per tank (average). 6.25% gas improvement= saves $4.1 per tank
18 mpg times 14 gallons= 252 miles per tank(average) 12.5% gas improvement= saves $8.2 per tank. (your goal)
19 mpg times 14 gallons = 266 miles per tank (good gas mileage). 18.75% gas improvement = saves $12.3 per tank (your goal)
20 mpg times 14 gallons = 280 miles per tank (great gas mileage). 25% gas improvement= saves you $16.1 per tank


30km/day(what you say that she will drive)= 5x30= 150 km/week (94 miles per week), therefore

at 16 mpg commuting 30km/day you will fill the tank every 2.38 weeks , cost of filling still $65
at 17 mpg commuting 30km/day you will fill the tank every 2.53 weeks
at 18 mpg commuting 30km/day you will fill the tank every 2.68 weeks
at 19 mpg commuting 30km/day you will fill the tank every 2.82 weeks
at 20 mpg commuting 30km/day you will fill the tank every 2.98 weeks

In summary you are looking at saving somewhere between 12-18 % on gas and money so $8-12ish dollars per tank but you wouldn't have to fill that often(between 2.3 and 3 weeks) so maybe you are saving $15-$16/month on commute gas times 12 months(maybe $200/year). Not a whole lot and that is why everyone is scratching their heads on your move. Not worth it on anyones eyes unless you switch cars for performance reasons.

Of course we did the switch for performance but the suggested MPG on the s4 wasnt close to what the reality is so of course it will be great to have the extra power and if she can fill up every 2 weeks instead of every week at the end of each month its 50% less gas spending which would relate in 2x65$ per month VS 4x65$ which is right there half of the car payment diffrence between both cars !!

[kashakrs3]

My average for ~35,000 km is 10.4 l/100km according to the dashboard. ~70% hwy driving

[TheContrarian]

16 mpg is bad. My wife gets 16mpg but she is on the gas heavily and that is driving 95% in the city.

My driving is 95% city, stop and go. If I cruise it is 30 seconds at a time.

My tuned GTI was much, much better in the same driving conditions.

[S3DUDE]

450lbs weight difference, RS3 has more displacement, bigger injectors ..yep, that would do it.

[Potatohead_RS3]

Of course we did the switch for performance but the suggested MPG on the s4 wasnt close to what the reality is so of course it will be great to have the extra power and if she can fill up every 2 weeks instead of every week at the end of each month its 50% less gas spending which would relate in 2x65$ per month VS 4x65$ which is right there half of the car payment diffrence between both cars !!

You think switching from an S4 to an RS3 is going to net a 50% mileage improvement?

Just say you want to a new car and stop trying to justify it. Nothing wrong with that.

[JayDog747]

Of course we did the switch for performance but the suggested MPG on the s4 wasnt close to what the reality is so of course it will be great to have the extra power and if she can fill up every 2 weeks instead of every week at the end of each month its 50% less gas spending which would relate in 2x65$ per month VS 4x65$ which is right there half of the car payment diffrence between both cars !!

In reality, it's not going to happen.

You think switching from an S4 to an RS3 is going to net a 50% mileage improvement?

Just say you want to a new car and stop trying to justify it. Nothing wrong with that.

Exactly. I didn't buy a V8 S4 to get better gas mileage than the A4 3.2. I bought it to get speeding tickets quicker.
If she wants to get better gas mileage, tell her to buy a Honda. And if you want to drive an RS3, you phuk'n buy it!

[zippster]

I recently moved from a 2017 S4 avant to a 2018 RS3 saloon and although I only have just over 500 miles on the RS3 I hit 36.8mpg on a 200 mile round trip to the office last week (motorway) in comparison I had to drive my s4 like 'miss daisy' to get near that!

its not the reason I bought the RS3, but a pleasant surprise for the occasional commute :):)

[BaltimoreCaesar]

I was averaging ~17mpg before my tune, now I'm around 16mpg... It's pretty much all what the EPA would classify as city driving, and I'm not exactly easy on the go-pedal

[michael818]

11500 mies - highway/city mix equals under 20 mpg, generally around 18. That is driving in sport with everything set to dynamic except suspension. You're not buying this car for gas mileage. Pure highway driving in D rather than sport has delivered about 27-28 mpg at maybe 70 mph in the RS3. Your mileage will vary greatly on driving style. If you kick the turbo in all the time, mileage is going to suffer. From what you indicate, I doubt you will be improving much on mileage from your current car. The performance and fun factor makes it worthwhile.

[RSgoals]

Let’s be real, I think the gas mileage “issue” is just an excuse to upgrade to an RS3 ;)


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[RSgoals]

Also speaking of filling up all the time, I know this doesn’t have to do with mpg but I am, due to the size of the tank being so damn small.


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[Gamil]

As far as I am concerned, and I have no idea about the S4 as I never even seated in one, I am disappointed by my RS3 consumption.
It pulls very well, OK, but the consumption is awful in my opinion.

[SolarRS3]

Awful? For 400hp? What are you used to? In my book that amount of power with that consumption is a feat in of itself. Sure if you drive aggressively your gonna get bad consumption but thats with any car. My wifes 1.6t tucson does 11-13l/100km city and 6.5-7.2l/100km highway; barely better than the RS3.

[keninblaine]

I don't understand the concern here. Most professional reviewers of the RS3 have stated clearly that the premium price paid for it is due to the motor. So if one is willing to pay a big premium for an RS3 over a S3, why worry about a little extra gas consumption? If that is a priority, then buy a S3 and save on purchase price AND gas costs. On top of that, gas mileage is a huge variable due to different driving styles, driving conditions, price of gas, etc etc. I have gotten 30 mpg driving about 75 mph for the 400 freeway miles from Blaine, Wa to Coeur d'Alene Id, and typically average around 22 mpg in my day to day driving on mostly rural roads and little city driving. I have no complaints. If I drive conservatively, I can do quite well. If I drive aggressively for the thrill, then I drop into the teens. It is my choice.

With relatively low gas prices in the past year or two, the cost benefit of getting better mileage is reduced. If and when prices go up, it will be a bigger factor. But for me, the extra cost of fuel is more than offset by the increased pleasure of driving this car. If it wasn't, I wouldn't have bought it, or would get a different car.

[speeddemon69]

I don't understand the concern here. Most professional reviewers of the RS3 have stated clearly that the premium price paid for it is due to the motor. So if one is willing to pay a big premium for an RS3 over a S3, why worry about a little extra gas consumption? If that is a priority, then buy a S3 and save on purchase price AND gas costs. On top of that, gas mileage is a huge variable due to different driving styles, driving conditions, price of gas, etc etc. I have gotten 30 mpg driving about 75 mph for the 400 freeway miles from Blaine, Wa to Coeur d'Alene Id, and typically average around 22 mpg in my day to day driving on mostly rural roads and little city driving. I have no complaints. If I drive conservatively, I can do quite well. If I drive aggressively for the thrill, then I drop into the teens. It is my choice.

With relatively low gas prices in the past year or two, the cost benefit of getting better mileage is reduced. If and when prices go up, it will be a bigger factor. But for me, the extra cost of fuel is more than offset by the increased pleasure of driving this car. If it wasn't, I wouldn't have bought it, or would get a different car.

Well said, and totally agree with this percent!


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[keninblaine]

Well said, and totally agree with this percent!


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You were more succinct in virtually saying the same thing in your first response. :)