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F30 / F31 / F32 / F33 / F36 (2012 - current)
The sixth generation 3 series, chassis code F30. 2013 model year 328i and 335i sedans now in production. Read the F30 frequently asked question thread for all your basic question and dive into all the details in the ultimate F30 information thread.

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  #26  
Old 03-19-2012, 08:19 PM
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I routinely get 25 MPG with my 2003 325i 5MT which is rated by the EPA at 18/27.
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  #27  
Old 03-19-2012, 09:33 PM
samualcc samualcc is offline
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Originally Posted by bl@ster View Post
BMW USA website now lists 33mpg on highway for both 328 and 335.
Booooo. I just didn't want it to be true
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  #28  
Old 03-19-2012, 09:48 PM
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anyone with a 335 getting 33mpg on the highway?
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  #29  
Old 03-20-2012, 12:07 AM
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this is ridiculous from BMW.
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  #30  
Old 03-20-2012, 05:22 AM
bcl0328 bcl0328 is offline
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I, for one, am quite upset. The ONLY reason I chose the 328 over the 335 was the better MPG. I could have had a 6 cylinder with more HP that gets the same MPG, unreal. I wonder if we can complain and trade up.
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  #31  
Old 03-20-2012, 05:55 AM
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I'm confused....the auto versions of the 328 and 335 are now equal. So, shouldn't the 328 and 335 manual numbers go down the same or similar as they are using the same transmissions? Why the bigger drop in the 335 versus the 328. 4 mpg difference in highway doesn't seem right.

Also, on 335 manual, considering weight is similar with the E90 (if not more), what changed that allowed the mpg to go up in the F30 version?
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  #32  
Old 03-20-2012, 06:39 AM
Michael Schott Michael Schott is offline
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Originally Posted by tturedraider View Post
Wow. That really disappointments me. I said this before and this reinforces my thoughts. I think with the 8AT they could have tweaked the N52 (direct injection & I'm sure there are others) and ended up with the same numbers as with the four pot.

The 528i with the N52 was rated at 22/32, 25 combined, with the 8AT.
The 2012 328 e92 with the N52 is rated at 28 mpg on the highway with AT and MT so there is still a significant difference between the N52 and the N20. By the way I've always gotten over 30 mpg (on the car's computer) on the highway so BMW has been conservative in their ratings.

And could you even get the N52 528 with the 8AT? Can I ask where are you getting these numbers? Mine are from the BMW USA website.
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  #33  
Old 03-20-2012, 07:09 AM
sunny5280 sunny5280 is offline
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Originally Posted by bcl0328 View Post
I, for one, am quite upset. The ONLY reason I chose the 328 over the 335 was the better MPG. I could have had a 6 cylinder with more HP that gets the same MPG, unreal. I wonder if we can complain and trade up.
This was my thinking when I went for the 8 cylinder X5 over the 6 cylinder. Looking at the fuel economy numbers the 6 cylinder didn't get much better than the 8. And the 8 offers so much more in terms of power. The same for my friend who just bought a used Jeep Grand Cherokee. The 8 cylinder achieves approximately the same fuel economy of the 6 (I think they're a single MPG off with the nod towards the 6). If one looks at the real life numbers as reported by owners the 6 actually did worse than the 8. Here's what I mean:

http://www.fueleconomy.gov/feg/Find....16355&id=16356

Last edited by sunny5280; 03-20-2012 at 07:14 AM.
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  #34  
Old 03-20-2012, 08:21 AM
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Elias Elias is offline
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This to me takes away the biggest incentive for the 328, give me a break my NA 1999 E46 gets me 25 mpg mixed driving, grant you it doesn't do 0-60 in under 6 sec but I could care less. Like someone else said BMW could've tweeked the NA straight six with the 8 AT and come up with 26 mpg easy. Very disappointing!
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  #35  
Old 03-20-2012, 08:24 AM
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Quote:
Originally Posted by Michael Schott View Post
The 2012 328 e92 with the N52 is rated at 28 mpg on the highway with AT and MT so there is still a significant difference between the N52 and the N20. By the way I've always gotten over 30 mpg (on the car's computer) on the highway so BMW has been conservative in their ratings.

And could you even get the N52 528 with the 8AT? Can I ask where are you getting these numbers? Mine are from the BMW USA website.
Yes. The 2011 528 had the N52 and the 8AT. The numbers are from the window sticker and the EPA website. I'm sure they're on Edmunds, too.

Of course, I don't need to point out the 2012 E92/93 have the six speed AT.
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  #36  
Old 03-20-2012, 08:47 AM
Michael Schott Michael Schott is offline
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Originally Posted by tturedraider View Post
Yes. The 2011 528 had the N52 and the 8AT. The numbers are from the window sticker and the EPA website. I'm sure they're on Edmunds, too.

Of course, I don't need to point out the 2012 E92/93 have the six speed AT.
Thanks for the information.

I have a hard time understanding how the transmission itself raises fuel economy this much. The 2012 328i e92 is rated at 28 mpg on the highway yet the 400 pound heavier 528i with the same engine but the 8AT gets 32 mpg?

I don't know the EPA test procedures but I am guessing that highway mileage is steady state in top gear. The 528i 8AT has a transmission ratio of .67 in 8th gear and a final drive ration of 3.23:1. The 328i coupe with the 6AT has the same gear ratio (.67) but the final drive ratio is higher at 3.73:1 so it turns at higher rpm for a given speed. I can't believe that this results in a 4 mpg difference in a car that is more than 10% heavier. Something seems fishy to me.
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  #37  
Old 03-20-2012, 08:53 AM
sunny5280 sunny5280 is offline
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Quote:
Originally Posted by Michael Schott View Post
Thanks for the information.

I have a hard time understanding how the transmission itself raises fuel economy this much. The 2012 328i e92 is rated at 28 mpg on the highway yet the 400 pound heavier 528i with the same engine but the 8AT gets 32 mpg?

I don't know the EPA test procedures but I am guessing that highway mileage is steady state in top gear. The 528i 8AT has a transmission ratio of .67 in 8th gear and a final drive ration of 3.23:1. The 328i coupe with the 6AT has the same gear ratio (.67) but the final drive ratio is higher at 3.73:1 so it turns at higher rpm for a given speed. I can't believe that this results in a 4 mpg difference in a car that is more than 10% heavier. Something seems fishy to me.
Here you go:

http://www.fueleconomy.gov/feg/fe_test_schedules.shtml
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  #38  
Old 03-20-2012, 08:54 AM
dtc100 dtc100 is offline
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Originally Posted by Michael Schott View Post
so it turns at higher rpm for a given speed. I can't believe that this results in a 4 mpg difference in a car that is more than 10% heavier. Something seems fishy to me.
You'd better believe it. Dropping the RPM from 2500 to 1700 will do it for you on the highway.
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  #39  
Old 03-20-2012, 11:04 AM
tagheuer tagheuer is offline
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Quote:
Originally Posted by Michael Schott View Post
The 2012 328 e92 with the N52 is rated at 28 mpg on the highway with AT and MT so there is still a significant difference between the N52 and the N20. By the way I've always gotten over 30 mpg (on the car's computer) on the highway so BMW has been conservative in their ratings.

And could you even get the N52 528 with the 8AT? Can I ask where are you getting these numbers? Mine are from the BMW USA website.
I think everyone will agree that relying on the OBC to accurately calculate FE is a lost cause, BMW's computer overstates the actual FE by a few MPG, agreed?

That has been my experience in my last three BMWs

So this almost a 10% overstatement on BMWs part.

Wonder if the same logic applies to the recent settlement Honda had to deal with...and is now paying $300 per owner.

http://www.autoblog.com/2012/01/30/a...onda-shows-up/

Last edited by tagheuer; 03-20-2012 at 11:06 AM.
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  #40  
Old 03-20-2012, 11:07 AM
sunny5280 sunny5280 is offline
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Originally Posted by tagheuer View Post
I think everyone will agree that relying on the OBC to accurately calculate FE is a lost cause, BMW's computer overstates the actual FE by a few MPG, agreed?

That has been my experience in my last three BMWs

So this almost a 10% overstatement on BMWs part.

Wonder if the same logic applies to the recent settlement Honda had to deal with...and is now paying $300 per owner.

http://www.autoblog.com/2012/01/30/a...onda-shows-up/
I've had fairly good results with it over a long distances. I wouldn't rely on it if you reset it after every fill up. But on a long distance trips (hundreds of miles) it's been fairly accurate.
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  #41  
Old 03-20-2012, 11:17 AM
tagheuer tagheuer is offline
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Originally Posted by sunny5280 View Post
I've had fairly good results with it over a long distances. I wouldn't rely on it if you reset it after every fill up. But on a long distance trips (hundreds of miles) it's been fairly accurate.
so are you saying its more accurate on highway driving? I'm not sure I understand, if I reset after every fill, that can easily be a couple hundred miles.
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  #42  
Old 03-20-2012, 11:45 AM
sunny5280 sunny5280 is offline
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so are you saying its more accurate on highway driving? I'm not sure I understand, if I reset after every fill, that can easily be a couple hundred miles.
Sorry about that...it's more a matter of more sampling resulting in a closer reading to actual. When I went on two long distance trips ~1,500 miles the average fuel reading on the computer was very close to that of the calculated. Maybe I should have said over thousands of miles instead of hundreds.
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  #43  
Old 03-20-2012, 12:19 PM
tagheuer tagheuer is offline
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Originally Posted by sunny5280 View Post
Sorry about that...it's more a matter of more sampling resulting in a closer reading to actual. When I went on two long distance trips ~1,500 miles the average fuel reading on the computer was very close to that of the calculated. Maybe I should have said over thousands of miles instead of hundreds.
ok, I suppose that makes more sense.

However, the OBC in my 2004 325 manual transmission, 2006 BMW X3 (auto) and 2009 BMW 328xi (auto) have all read about 2mpgs higher than actual, manually hand calculated averages

(i.e. actual fuel pumped in according to certified pump, less amount remaining in tank, over actual number of miles driven).
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  #44  
Old 03-20-2012, 12:23 PM
bl@ster bl@ster is offline
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Originally Posted by bcl0328 View Post
I, for one, am quite upset. The ONLY reason I chose the 328 over the 335 was the better MPG. I could have had a 6 cylinder with more HP that gets the same MPG, unreal. I wonder if we can complain and trade up.
My 328 is about to hit US soil at the dock and I just called my CA to ask about trading up. They said that's fine, I can re-order, but they won't give me the same deal (1250 over invoice) as I got w/ my 328. They said since they get fewer production slots. I'm pissed.
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  #45  
Old 03-20-2012, 12:58 PM
Michael Schott Michael Schott is offline
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Originally Posted by dtc100 View Post
You'd better believe it. Dropping the RPM from 2500 to 1700 will do it for you on the highway.
But we are not talking about a 30% drop in RPM's. It's more like 15%. From 2800 rpm at 75 mph to 2400 rpm at the same speed.
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  #46  
Old 03-20-2012, 03:18 PM
Robert A Robert A is offline
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What validity are these figures if the newly designed high efficiency 328i has exactly the same fuel economy as the carryover 335i motor?

Moving from the E90 to the the F30, the economy of the 335i went up to match the new 328i. So, if they kept the NA 328i from before, it would have the same fuel efficiency too? So what economy have we really gained with the four banger?
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  #47  
Old 03-20-2012, 03:24 PM
sr5959 sr5959 is offline
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BMW are still running the TV ad highlighting 36mpg with the F30...
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  #48  
Old 03-20-2012, 03:36 PM
gator15 gator15 is offline
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Is there any chance the 335i's fuel economy rating will also be revised? I just checked on BMW's website, and they have deleted the fuel economy ratings for the 335i and now they simply say "TBD". The 328i lists the new numbers for AT, but the 328i MT also shows TBD. This leads me to believe that the numbers will be revised for the 335i as well.
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  #49  
Old 03-20-2012, 03:40 PM
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Saintor Saintor is offline
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Quote:
Originally Posted by Robert A View Post
Moving from the E90 to the the F30, the economy of the 335i went up to match the new 328i. So, if they kept the NA 328i from before, it would have the same fuel efficiency too? So what economy have we really gained with the four banger?
Nothing. That's a pointless fashion from Europe to relieve some conscience.

Let's resume; the 335i auto has the same EPA mpg numbers as the 328i auto, all of them. It is true that the 335i auto could also be revised down eventually

Now with a 330i I6 direct injected NA, I am sure that you could get 270HP with great fuel economy. Wait, it has been done and it spells N-5-3.

That N20 is a joke.
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Last edited by Saintor; 03-20-2012 at 03:41 PM.
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  #50  
Old 03-20-2012, 03:46 PM
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tturedraider tturedraider is offline
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Quote:
Originally Posted by bl@ster View Post
My 328 is about to hit US soil at the dock and I just called my CA to ask about trading up. They said that's fine, I can re-order, but they won't give me the same deal (1250 over invoice) as I got w/ my 328. They said since they get fewer production slots. I'm pissed.
That's true. 328s out sell 335s by about 3 to 1, so that's the way they get their allocations.
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Last edited by tturedraider; 03-20-2012 at 03:50 PM.
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