Fuel Economy Predictions?

[Jockey]

Originally Posted by SF848

Still all depends on how you drive though. For a bit i was getting a combined 13-15mpg in my 335iS with mostly city driving. When i drove mostly freeway it was closer to 19.5mpg combined.

I dont think the new cars will be much better (if at all) than the that.

You're getting some pretty horrible gas mileage.

Over 6 years I've been avg 19-20 city and 28-29 hwy.

My combined avg has been pretty steady at 24.

[Sedan_Clan]

Originally Posted by RealStig

I wonder if this engine somehow gets a better milage than the 335i.

Mileage is right foot dependent. I can get 330 miles out of an E9X M3; 420+ out of an F30 335i. YMMV!

[Powaup]

In the Xcar video of the M3/M4 the guy said that according to BMW both cars get 34 mpg combined which translates to 28 mpg us I believe it with DCT and auto start stop

[Sedan_Clan]

Originally Posted by Powaup

In the Xcar video of the M3/M4 the guy said that according to BMW both cars get 34 mpg combined which translates to 28 mpg us I believe it with DCT and auto start stop

I hated ASS in my '11.5 E92 M3, and I never used it. Fast forward to now, I leave ASS active all of the time in the '14 335i. I've grown to like it.

[RealStig]

Originally Posted by Powaup

In the Xcar video of the M3/M4 the guy said that according to BMW both cars get 34 mpg combined which translates to 28 mpg us I believe it with DCT and auto start stop

That is amazing is far better than a 335.

[Sedan_Clan]

Originally Posted by RealStig

That is amazing is far better than a 335.

I don't think the ///M will achieve better gas mileage than a 335i, but I think it will be on par with one (...probably around 25-27 MPG's, which is about what you can obtain if you baby a 335i in mixed driving conditions; more if it's primarily highway).

[RealStig]

Originally Posted by Sedan_Clan

I don't think the ///M will achieve better gas mileage than a 335i, but I think it will be on par with one (...probably around 25-27 MPG's, which is about what you can obtain if you baby a 335i in mixed driving conditions; more if it's primarily highway).

That is like 50% better than what I get in my car. Isn't that insane? Don't make fun of me, but one should factor in the fuel savings when coming up with the monthly payment budget.

[Sedan_Clan]

Originally Posted by RealStig

That is like 50% better than what I get in my car. Isn't that insane? Don't make fun of me, but one should factor in the fuel savings when coming up with the monthly payment budget.

Yes they should, and a prudent individual does.

[Bimmer4John]

Originally Posted by Jockey

You're getting some pretty horrible gas mileage.

Over 6 years I've been avg 19-20 city and 28-29 hwy.

My combined avg has been pretty steady at 24.

As has been mentioned already its pretty right foot dependent. My 3.5 year average in my S4 is 15.45 MPG. And while I drive almost exclusively city (80/20 overall probably) I am still a good deal below the EPA estimates.

I'm completely aware that I could be getting much better gas mileage, but where's the fun in that

[/// M sa]

Person buys 80k sports car. Person asks about gas mileage on the 80k twin turbo car. I the person that asked that queston with that said I get 17 mpg in my e90 if I am lucky and forget the GTR.. I rather not say.

[spiney]

UK website stated 34 mpg with DCT

[Powaup]

Originally Posted by Sedan_Clan

I don't think the ///M will achieve better gas mileage than a 335i, but I think it will be on par with one (...probably around 25-27 MPG's, which is about what you can obtain if you baby a 335i in mixed driving conditions; more if it's primarily highway).

I was thinking the same thing but if you consider the fact that they put so much R&D into the S55 it could beat the combined mpg rating of an N55

[Kadema]

Oh, I really get tired of people inconsiderately comparing published german/EU norm numbers to US specs or even realistic individual numbers, regardless if concerning vehicle weight or fuel consumption. Please read the whole thread, everything is explained above.
- milage is actually 33% better than e9x M3, if consumption is 25% lower, that's due to maths
- no, the resulting 28mpg combined isn't what you'll experience in your daily driving unless you go very very slow
- EU consumption of the N55 is better than S55, but S55's numbers are better than N54's. So, it depends on which 335i you're talking about exactly.

Kadema

[hellrotm]

Using the stated 335i auto mpg and M3 dct mpg on BMWUK site.

BMWUSA M3 dct mpg should come in around ~27.7 mpg (highway).

But no one drives like that, would be happy with above 20 mpg combined.

[spool twice]

If I'm driving strictly highway, I can get 25.xx mpg going 75mph on my E9x M3. My combined average is 18.3mpg, strictly city driving (mainly redlights, not really heavy "traffic," but you can get a good cruising distance @ 45 mph between lights ). So, given a 33% increase, that hopefully will put me near 24.xx mpg on the S55 with my driving environment, which would be awesome. FWIW, I get a combined 25mpg on my 335i on the same loop, and with a stage II JB4 G5 ISO Board with the e-wastegates set to "0" (which keeps the gates open when cruising, mean zero boost), my instant MPG indicator read 36.xx mpg @ 75mph. I'm excited by this possibility when BMS gets their hands on the S55 and produce an algorithm for isolated boost control

[Kadema]

I'm sure the more you push the s55, the more it's advantage in mpg will shrink. I.e. 33% better milage can only be achieved by very moderate driving. On the track it might even be worse than the e9x m3.

[tdizzle]

Originally Posted by Sedan_Clan

Mileage is right foot dependent. I can get 330 miles out of an E9X M3; 420+ out of an F30 335i. YMMV!

Precisely, if I go full highway miles (like on long trips), I can break 500 miles on a tank in my 335. I have seen my mileage suffer since I put on Mich PSS with 265 rears though. Looks like I'm getting almost 2mpg less around town and low 30s on the highway now, so hitting 500 miles on a tank will basically run me to fumes now. Or I guess I could drive below 80...

[pkimM3r]

I dont know. In our n55 I get about 17mpg combined. She gets around 20.

I get 14 in my e90m so really would depend on driving habits. I dont try to save gas much if not at all.

Whoa. Edit. Just read the post before this. I get about 180-200 miles per tank.

[Sedan_Clan]

Originally Posted by pkim1079

I dont know. In our n55 I get about 17mpg combined. She gets around 20.

I get 14 in my e90m so really would depend on driving habits. I dont try to save gas much if not at all.

Whoa. Edit. Just read the post before this. I get about 180-200 miles per tank.

You have lead foot syndrome. Lol!

[RealStig]

So based on what everyone is saying there is a pretty good change gas guzzler tax will go away with the new cars.

[Brosef]

Originally Posted by RealStig

So based on what everyone is saying there is a pretty good change gas guzzler tax will go away with the new cars.

it would be a huge disappointment if BMW couldn't get rid of the GG tax.

[czarmar]

One thing I'd mention is that cars generally can increase their combined MPG by .5-1 mile for every 100 lbs dropped. If the average M3 comes in 200lbs less than an average 335i, and the tricks used to boost the power don't contribute to increased fuel consumption under low power conditions, perhaps we will see the M3 get better MPG than the 335i.