[Dave4501]

Two thoughts:

1. One would assume the I4 still gets somewhat better mileage than the I6. That extra power and cylinders should be sucking more gas, how much more is the question.

2. How does the F30 turbo 6 get such better mileage than the E90 turbo 6? I recall that the MPG on the E90 was 26 highway. The F30 was bumped up to about 33 as I recall. You wouldn't expect that much increase simply due to the new start/stop function.

[shoptb]

Originally Posted by TiAg330i

How does the F30 turbo 6 get such better mileage than the E90 turbo 6? I recall that the MPG on the E90 was 26 highway. The F30 was bumped up to about 33 as I recall. You wouldn't expect that much increase simply due to the new start/stop function.

I agree that the difference between the E90 and F30 cannot be as great as what they are stating. However, thinking aloud, different models could account for changes in fuel economy with the same engine based upon the following factors:

a) Aerodynamic increases / lower wind resistance
b) Gearing ratios
c) Changes in stock tire/wheels
d) Lesser weight
e) others?

Of course, I would be curious as to what the weather/road conditions were during the tests....are they apples to apples?

[Mako]

First, the EPA will not change the numbers, not this year, its a US Gov agency, they are never wrong,

Second, price difference when optioned the same is only around $4K between the 28i and 35i

Third, I actually think the EPA might be right on this one, and I think the 335i numbers are also too high. I have a X3 35i and we are averaging 21.5 MPG with mixed driving, on a recent trip we drove 500 miles almost all highway with no traffic and were getting 25.5-26 MPG. I know the X3 weighs more, but can a few hundred pounds actually make MPG go down 20-25%, that seems a bit odd. I also find it odd that the 535i which weighs 130 pounds less than the X3 35i claims 30 mpg highway, which is 15% greater than the X3.

That is like saying that if you have a 130 pound passenger your highway MPG will go from 30 mpg down to 26 mpg, I highly doubt that! BMW get your numbers straight!

EDIT: I did see the post above mine (after posting mine) and one major factor is aerodynamics, I do realize that, but if these are tested on a machine then how can aerodynamics effect MPG for testing?

[bimmerJP]

I say that it is BS. How come that manual is higher than 8-speed auto? This is not logical for me...

[Fraggy]

I believe the EPA on this one. BMW has been one hell of a questionable company the past few years.

[raannathr333]

I wouldn't worry too much about these revised numbers. I averaged 29 - 32 mpg in my turned e90 335i... these are well crafted and effecient automobiles. BMW has made a point to not only contend in the power race but also in the efficiency race as well.

EPA who?

[bimmerJP]

Originally Posted by matt_335Ci

wow, that is some BS! the 328i has been advertised on television, webpages, etc as getting 36mpg on the highway and 40+ in ECO Pro. i knew with the performance numbers that was too good to be true. i bet the 335i AT will be closer to 20/30.

Hmmm.... Have you tried to drive as "careful" as you can in your 335? My E90 335 was rated 26 MPG on highway while I got a 32 MPG on a trip last time. Average speed: 65 mph. I calculated the mileage myself and the result is really close to the one on the dash. The difference was less than 1%. I don't know. I think F30 can do more than 32 on highway.

[bimmerJP]

Originally Posted by raannathr333

I wouldn't worry too much about these revised numbers. I averaged 29 - 32 mpg in my turned e90 335i... these are well crafted and effecient automobiles. BMW has made a point to not only contend in the power race but also in the efficiency race as well.

EPA who?

It seems like that I'm not the only one here

[E36toF30]

Originally Posted by TiAg330i

2. How does the F30 turbo 6 get such better mileage than the E90 turbo 6? I recall that the MPG on the E90 was 26 highway. The F30 was bumped up to about 33 as I recall. You wouldn't expect that much increase simply due to the new start/stop function.

The 2011 335i with the N55 is rated at 28 on the highway I believe. The main reason for the difference is the 8 speed auto. The manual also has higher ratios for 4th - 6th gears. Some other differences that may go into the increased mileage are the brake energy regeneration system and redesigned intake and exhaust compared to the 2011 E90 model.

[MacAttackBMW]

I have a question for everyone who are feeling upset right now (understandably)

If the numbers that came out originally were 33 instead of 36, would you really not have been stoked about the car? We all know enough about physics to know the 335 and 328 aren't going to consume the same gas. So for all of you out there with a 328 on order - does it seriously make sense to pay 4K+ more for the car and then more gas too. If you were happy with the 328, I think you still should be.

[E36toF30]

Originally Posted by MacAttackBMW

I have a question for everyone who are feeling upset right now (understandably)

If the numbers that came out originally were 33 instead of 36, would you really not have been stoked about the car? We all know enough about physics to know the 335 and 328 aren't going to consume the same gas. So for all of you out there with a 328 on order - does it seriously make sense to pay 4K+ more for the car and then more gas too. If you were happy with the 328, I think you still should be.

+1

[DDS2015]

Originally Posted by TiAg330i

Two thoughts:

1. One would assume the I4 still gets somewhat better mileage than the I6. That extra power and cylinders should be sucking more gas, how much more is the question.

2. How does the F30 turbo 6 get such better mileage than the E90 turbo 6? I recall that the MPG on the E90 was 26 highway. The F30 was bumped up to about 33 as I recall. You wouldn't expect that much increase simply due to the new start/stop function.

I would venture to guess that the main difference between the E90 and F30 both equipped with N55 engines would be the transmissions. The F30 uses an 8 speed unit with a tall 8th gear so at hwy speeds it's basically sitting at idle.

In my old car I used to get in the neighbourhood of 10mpg. In my E90 328xi I get about 21mpg in mixed city/freeway. EPA rating for my car is around 26mpg hwy iirc (which I can achieve if it isn't too windy out). However, I still get double the milage of my old ride so that makes me happy about it. Therefore, to everybody who's now second guessing their choice, don't compare it to the 335, compare it to your outgoing car.

[justinnum1]

who cares? 328 is a fucking awesome car, great daily driver and i will continue loving it, i could care less about numbers i would never see anyways

[BMWinNorthdakota]

Originally Posted by jerrypon83

Hmmm.... Have you tried to drive as "careful" as you can in your 335? My E90 335 was rated 26 MPG on highway while I got a 32 MPG on a trip last time. Average speed: 65 mph. I calculated the mileage myself and the result is really close to the one on the dash. The difference was less than 1%. I don't know. I think F30 can do more than 32 on highway.

I can personally vouch that the e90 335i MPG ratings are incredibly conservative. I can achieve the published figures at 80ish mph's pretty consistently... at a 60mph highway cruise, 30mpg's is so easy to attain.


About the EPA:

The agency (just like any other gov agency) that employs its own judges to "review" cases/disputes? I am sure they are incredibly eager to check the results that some fat bloke got while he had the windows rolled down eating his cheese burger... his body fat spewing out of the seat belt and what not.....Bloated just like his potbellied employer



How 'bout dem "checks and balances", folks?


Words cannot express how incredibly irate I would be if I held a position at BMW. You ALL know how conservative BMW is on their numbers, this is no exception.... Quit point the finger at BMW

[2wheels4me]

In my first 1000 miles with my F30 335 I have averaged 31 mpg with a mix of dense freeway and city driving for my 52-mile-a-day round-trip commute, plus 3 days a week driving a cold-start, couple-of-miles trip to the gym and back (lunchtime), including climbing up and down to the fourth story of a parking garage. Freeway alone is about 34 or so. Admittedly driving mostly frugally, this seems in line with the 335's 23/33 rating or even a bit better. I find it very hard to believe that the new 328 wouldn't do a couple of mpg better than that.

[Propagator]

Originally Posted by BMWinNorthdakota

troll



I can personally vouch that the e90 335i MPG ratings are incredibly conservative. I can achieve the published figures at 80ish mph's pretty consistently... at a 60mph highway cruise, 30mpg's is so easy to attain.


About the EPA:

The agency (just like any other gov agency) that employs its own judges to "review" cases/disputes? I am sure they are incredibly eager to check the results that some fat bloke got while he had the windows rolled down eating his cheese burger... his body fat spewing out of the seat belt and what not.....Bloated just like his potbellied employer



How 'bout dem "checks and balances", folks?


Words cannot express how incredibly irate I would be if I held a position at BMW. You ALL know how conservative BMW is on their numbers, this is no exception.... Quit point the finger at BMW

You cannot be serious. Words cannot express how incredibly fanboi-ish your post is.

This is no exception? How did you reach that learned conclusion? The same way you know the weight and eating habits of the EPA tester who tested the 328i?

[mikikuki7]

If my 335 averages less, I will...I don't know what I will do! LOL :O Very very upset! It's been giving me 17.9MPG city in EcoPRO. :O

[justinnum1]

Originally Posted by mikikuki7

If my 335 averages less, I will...I don't know what I will do! LOL :O Very very upset! It's been giving me 17.9MPG city in EcoPRO. :O

lol, r u serious? that should be higher, im getting 28 on eco pro in town.

[mikikuki7]

Well, my first 335 came defective, the nav, radio, and start/stop function stop working the first day I got it! So, they took the car back and I got this new one. So, I feel weird...

[Mdynamic]

Originally Posted by shoptb

I agree that the difference between the E90 and F30 cannot be as great as what they are stating. However, thinking aloud, different models could account for changes in fuel economy with the same engine based upon the following factors:

a) Aerodynamic increases / lower wind resistance
b) Gearing ratios
c) Changes in stock tire/wheels
d) Lesser weight
e) others?

Of course, I would be curious as to what the weather/road conditions were during the tests....are they apples to apples?

Wouldn't the F30 328i mpg numbers be consistent with the European Km/L ratings just in different conversions?

If the EU agencies have given BMW the green light with these posted figures, which should be the same after conversion to our mpg, wouldn't the EPA be the only agency to disagree with all other fuel economy regulation administrations throughout the world who have tested the 328i's km/l?

[gator15]

Originally Posted by Mdynamic

Wouldn't the F30 328i mpg numbers be consistent with the European Km/L ratings just in different conversions?

If the EU agencies have given BMW the green light with these posted figures, which should be the same after conversion to our mpg, wouldn't the EPA be the only agency to disagree with all other fuel economy regulation administrations throughout the world who have tested the 328i's km/l?

I agree with you, except for one point. The US fuel economy numbers should be less than those found in Europe because of the ethanol in our gasoline. Maybe BMW used non-ethanol gasoline during their tests

[svache]

Originally Posted by shoptb

I know this news may be a little shocking to folks, but let's step back and look at the big picture.

Pre-Revision 328i MPG Estimate:
15,000 miles @ 36 mpg @ $3.99/gallon = $1,666.67

Post-Revision 328i MPG Estimate:
15,000 miles @ 33 mpg @ $3.99/gallon = $1,813.53

So basically, you'd be spending $146.97 more in fuel *IF* this decrease in MPG actually comes to fruition. Does anyone seriously want to change their car order for this small amount of difference?

Let's look at it another way ....

My '08 E92 335xi MPG Reality:
15,000 miles @ 24 mpg @ $3.99/gallon = $2,493.75

Post-Revision 328i MPG Estimate:
15,000 miles @ 33 mpg @ $3.99/gallon = $1,813.53

Annual Fuel Savings = $680.22

That's still a chunk of change, and a lot less than the $5K premium I would pay for a 335i vs. a 328i.

Agreed, I just received an email from my CA and he quoted something from BMW N.A. and it said in that also that it is still an increase of 18% better economy.

For fun, I did do the numbers for my state (Hawaii) as they're a lot higher than the mainland (currently 4.48 to 5.07 per gallon premium) and for Europe (averaging from 8 to 10 USD per gallon). The difference for my state would be 170.36-192.42 at today's prices and in Europe about 303.02-378.78 per year. In both situations the increase from the old 328 is indeed significantly bigger than the 3 mpg difference.

(and yes, I am aware that with a price of 4.50 per gallon and 15K per year, I will still save almost $2,454 per year.. but I still don't like it as I could've saved up to 2,625 per year lol (I know, at this point it starts to become nitpicking hahaha)).

Originally Posted by Mdynamic

That is a very interested way of thinking indeed, sounds very likely they should very similar, if not the same. As for the ethanol, would it make such a big difference (of 3 mpg)?