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View Poll Results: Did Your Car's MPG's Decrease Since Performing the Emissions/EGR Recall?
Yes 25 55.56%
No 20 44.44%
Voters: 45. You may not vote on this poll

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  #1  
Old 08-12-2012, 09:35 AM
cssnms cssnms is offline
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Exclamation POLL: Did Your Car Experience an MPG Decrease Since Performing Emissions/EGR Recall

Did you experience a drop in mpg's since taking your car in to the dealer for the BMW mandated emissions/EGR recall campaign? If so, please indicate as such and it would be helpful to know by what percentage your mpg's dropped.


I would like to start building some statistics on this problem, which may or may not prove to be of some benefit when dealing with BMW.


My car's city mpg's dropped 26%! I went from an avg of 23 mpg's to 17 mpg's and I am mad as hell about it

Last edited by cssnms; 08-12-2012 at 09:51 AM.
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  #2  
Old 08-12-2012, 01:25 PM
KeithS KeithS is offline
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Mein Auto: '11 335d, '00 540iT
about 10%. Was able to get 42 highway with no AC, 41 with AC, breaking 40 was easy. Best I can do now is 37. Average is more subjective due to driving conditions and more use of AC. Before average was always over 30, now is always under 30. Except for a burst here and there I drive conservately.

Last edited by KeithS; 08-12-2012 at 01:29 PM.
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  #3  
Old 08-12-2012, 03:45 PM
DC-IT DC-IT is offline
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Location: Toronto, Canada
 
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Mein Auto: E350BlueTec, Jetta TDI
I only monitor my fuel consumption based on the mileage driven per tank.
So far it hasn't changed.
I continue to drive it hard often at speeds of 120-140 km/hr when I'm on the highway and the D still gets decent FE of 30+ mpg.
I'm happy with that.
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  #4  
Old 08-13-2012, 05:48 AM
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Axel61 Axel61 is offline
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mines stayed the same even with the updated RENNtech flash!!
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  #5  
Old 08-13-2012, 06:30 AM
KeithS KeithS is offline
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Mein Auto: '11 335d, '00 540iT
I will take a guess that having a loss of MPG, or not, may be related to the mapping the car had before the upgrade. May need to be more number specific, and stick to something that is more comparable such as only highway MPG. Average means nothing as everyone has different driving patterns.

Thinking out loud something like:
Was able to break 40 MPG highway before and after
Was able to break 40 MPG highway before but not after
Was never able to break 40 MPG before or after

May also want to ask when was the car built (when the DME was originally programmed).

Last edited by KeithS; 08-13-2012 at 06:32 AM.
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  #6  
Old 08-13-2012, 11:19 AM
vadim_s vadim_s is offline
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Yup. Went from 35mpg to 32mpg and that is mostly all highway driving.
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  #7  
Old 08-13-2012, 02:26 PM
Pierre Louis Pierre Louis is offline
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Mein Auto: 2011 335d Sport
I have a late build 2011 version and am not aware of this recall for my car. My fuel economy is not so good, however. Its around 23 mpg around town, 32 on the highway. I'm used to getting around 30 mpg around town and up to 40 on the highway with my old E320 CDI.

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Last edited by Pierre Louis; 08-13-2012 at 02:27 PM.
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  #8  
Old 08-13-2012, 04:53 PM
KeithS KeithS is offline
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Based on this incidental type of feedback it seems as the later 2011 build cars have the "updated" mapping from the factory that yields lower mpg, and may not be subject to the recall.
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  #9  
Old 08-13-2012, 05:22 PM
cliffj cliffj is offline
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Mein Auto: 2011 BMW 335d
Before the recall, I routinely achieved 32+ mpg on my daily commute of about 60% hwy. Pure highway trips yielded at least 36-38 mpg. After recall, I am averaging 28-29 mpg on the daily commute, and at best 33 on a pure highway trip. Still love the d's performance, but disappointed in the loss of mpg.
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  #10  
Old 08-13-2012, 06:25 PM
clippernation clippernation is offline
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Like DC-IT, I only base it on the mileage I get for a whole tank, and haven't separated it into trips and such. My MPG has actually gone up slightly according to fuelly. Commune consists of 70& highway, though all of that is in terrible LA traffic.
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  #11  
Old 08-13-2012, 08:29 PM
Pierre Louis Pierre Louis is offline
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The car is such a hot rod, it may be the way I drive it....

PL
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  #12  
Old 08-14-2012, 06:56 AM
DC-IT DC-IT is offline
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Mein Auto: E350BlueTec, Jetta TDI
Quote:
Originally Posted by Pierre Louis View Post
The car is such a hot rod, it may be the way I drive it....

PL
Absolutely!
If you're going to drive it like a granny for FE might as well buy a Prius.
It's a BMW and meant to be driven hard for your enjoyment. But it still gives excellent FE so I have no complaints.
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  #13  
Old 08-14-2012, 08:32 AM
BR328 BR328 is offline
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I did not notice any increase in fuel consumption in my X5 post fix. I did have to reset the throttle response though after the fix. The initial response was very sluggish. Post reset, it was back to normal. Not sure if it is correlated
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  #14  
Old 08-14-2012, 08:48 AM
pogopop77 pogopop77 is offline
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For the first couple of tanks after the recall service I noticed a 2 MPG drop during my usual commute (75-80% highway). Then the car went through a few burn off cycles (where, after you park, the engine appears to be burning off excess soot/particulate matter). Since then, it has improved a little -- I'm within 1 MPG of my average from before the service.
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  #15  
Old 08-14-2012, 05:37 PM
riskybz riskybz is offline
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Quote:
Originally Posted by pogopop77 View Post
For the first couple of tanks after the recall service I noticed a 2 MPG drop during my usual commute (75-80% highway). Then the car went through a few burn off cycles (where, after you park, the engine appears to be burning off excess soot/particulate matter). Since then, it has improved a little -- I'm within 1 MPG of my average from before the service.
Same here..Just drove from Prescott, AZ to Durango, CO and had a 1 or 2 MPG drop from previous experience.
Drove from Durango to Colorado Springs...now very close to pre-update numbers.
Averaged 35.6 first day, 37.1 second day. Hard mountain driving, pretty happy with the performance
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  #16  
Old 08-14-2012, 07:47 PM
richk300 richk300 is offline
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For the 21K before recall I averaged 30.7, the 3K after 29.7. To close to call right now.
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  #17  
Old 08-17-2012, 06:46 PM
nortynorty nortynorty is offline
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Can't say specifically, but I feel it did. My average MPG per tank using Fuelly has certainly dropped, however my driving has been more local than it was before the recall service. I seem to be still doing fairly well with highway driving. For example, on my current tank which has a fair amount of highway driving I have about 260 miles and I am just under half on the gauge.
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  #18  
Old 08-19-2012, 05:44 PM
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Flyingman Flyingman is offline
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I feel like it has dropped a bit, but it has been an abnormally hot summer. My MPG always seem to drop in the summer months even though traffic is less with kids out of school.
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  #19  
Old 08-21-2012, 11:32 AM
c230mike c230mike is offline
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Experienced a mpg decrease but now mpgs are coming back to pre recall levels. Had my recall done a bit more than 2 months ago
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  #20  
Old 08-21-2012, 11:39 AM
cssnms cssnms is offline
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On my second tank but my mpg's are still low although they've improved. I m not getting anywhere the same amount of miles out of a tank during my mostly city driving. I think my last tank was a little over 300!
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  #21  
Old 08-21-2012, 12:11 PM
Stevie 335D Stevie 335D is offline
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New on the forum today

2011 335D Sport package 25,336 miles

Big drop for me... I used to get 440-460 miles per tank combined city/hwy Filled up yesterday with 349 miles on my last tank. Same for the last 4 or 5 fills since recall. I am scheduled for my 3rd service apppointment in a 6 weeks. This is starting to get old........told my SA that i am starting to hate my once loved "best car i have ever owned" car !!

Last edited by Stevie 335D; 08-21-2012 at 02:30 PM.
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  #22  
Old 08-22-2012, 11:06 PM
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JŠnos JŠnos is online now
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Welcome Stevie. Your situation sounds like mine. I used to average 27-29mpg in mixed driving, mostly city (very hilly) and some bumper-to-bumper freeway driving. I used to see 425 miles per tank. Now I'm seeing 23-25mpg and need to fill up around 360 miles. That is a pretty big difference, especially since I don't really have a lead foot!

I'll be interested to hear more about this post-recall 'recall' (or whatever it is).

Oh, on an extended trip to Tahoe I got 30.9 mpg. Looking forward to seeing the downhill trip numbers.

Last edited by JŠnos; 08-22-2012 at 11:12 PM.
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  #23  
Old 08-23-2012, 11:46 AM
Snipe656 Snipe656 is offline
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Quote:
Originally Posted by JŠnos View Post
Welcome Stevie. Your situation sounds like mine. I used to average 27-29mpg in mixed driving, mostly city (very hilly) and some bumper-to-bumper freeway driving. I used to see 425 miles per tank. Now I'm seeing 23-25mpg and need to fill up around 360 miles. That is a pretty big difference, especially since I don't really have a lead foot!

I'll be interested to hear more about this post-recall 'recall' (or whatever it is).

Oh, on an extended trip to Tahoe I got 30.9 mpg. Looking forward to seeing the downhill trip numbers.
I seem to be in the same boat as you for fuel economy. But I really have not driven a whole lot since the recall so been trying to just wait and see. I have filled up 2 times since the recall and one of those was an early fill up. I am down to a 1/4 tank right now though, not sure how many miles and I normally do not put much faith in the computer mpg but it too is much lower than normal reading out at 24mpg. My typical average for a tank was around yours.
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  #24  
Old 08-25-2012, 11:17 AM
5SeriesNatsFan 5SeriesNatsFan is offline
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The way to answer the question is to have two 335ds one, without the recall fix and one with the recall fix, on a dynamometer for a controlled test run.
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  #25  
Old 08-25-2012, 11:50 AM
Snipe656 Snipe656 is offline
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That of course assumes both cars would get the same exact mileage which I have a feeling they are not that consistent across the model. Attached is my mileage for the past three tanks since the recall with the first being one that was in the car before and after the recall. To me it is too close to say one way or the other when one posted 27.7 and typically my averages are in the 29.x range. Those 30s are out of the norm for me and were pre-recall.
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