335d Fuel Economy Reduction During Break In Period?

LRS · 06-28-2007, 01:17 PM

Hi All

A questions about fuel economy performance with my new 335d.

I have been driving it like granddad for the first 1200k miles based on the BMW advised break in period, but have found that I could not get anything higher than 34.8 MPG Combined (A roads and Motorway). I have heard of people getting near to 39 MPG!

I have heard that other manufactures fuel management systems e.g. Volvo, run their diesels richer for the first 7k miles, thus achieving less fuel economy for the first 7k miles. Once the odometer has reached just over 7k, the fuel economy increases significantly.

Does anyone know if BMW incorporates a similar approach with its diesel engines?

Thanks

LRS

red355 · 06-28-2007, 01:24 PM

i was seeing 37 -40 for the first 2000 miles now I get 41 - 44mpg.

everybody else seem to get much lower than me, but trust me I do not hang about. Rear tyres are looking quite used after 11k miles.

dxb335d · 06-28-2007, 01:27 PM

on average anywhere between 32-42mpg

ChrisMWard · 06-28-2007, 02:05 PM

Managed 40 only on a long run to Cornwall. Last tankfull gave 34MPG, mixed driving, no complaints it's slightly better than our last e46 330d auto used to return.

Regards

Chris

peterg1965 · 06-28-2007, 02:29 PM

My Focus ST has been returning much less than 30 Mpg and I can just about eek 31Mpg on a motorway journey by keeping at speeds less than 75. I am looking forward to being able to use a bit of that 335d torque and still significantly better fuel consumption

And it would appear that diesel is cheaper than petrol at a lot of garages

red-max · 06-28-2007, 03:00 PM

Quote:

Originally Posted by red355

i was seeing 37 -40 for the first 2000 miles now I get 41 - 44mpg. everybody else seem to get much lower than me, but trust me I do not hang about. Rear tyres are looking quite used after 11k miles.

Wow, that's very good. Do you do mostly long runs, and/or very few short runs?

I've done just over 9,000 miles and overall I get 35.6mpg (according to the OBC) but the big diesel seems quite thirsty for short runs, and I don't think the auto is good for stop-start driving, in terms of economy.

Just out of interest, how many miles do you get out of a tankful, and what does the OBC show (range) after you fill up?

LRS · 06-28-2007, 03:48 PM

Quote:

Originally Posted by red355

i was seeing 37 -40 for the first 2000 miles now I get 41 - 44mpg.

everybody else seem to get much lower than me, but trust me I do not hang about. Rear tyres are looking quite used after 11k miles.

Red355

How on earth are you managing to get such high MPG???

I really have been babying my driving for the last 1200 miles and have come nowhere near what your getting. What is your secret?

Also as Red-Max has asked - how many miles do you get out of a tankful, and what does the OBC show (range) after you fill up?

Thanks

Steve A · 06-28-2007, 05:47 PM

i get 26.6 mpg, this is the same figure before and after my remap, how on earth people get 35-40 is well beyond me

matlough · 06-29-2007, 12:20 AM

Quote:

Originally Posted by Steve Ashton

i get 26.6 mpg, this is the same figure before and after my remap, how on earth people get 35-40 is well beyond me

I'm getting about 29 mpg, and thats with a petrol! 26 seems shocking for an oil burner!

DervFan · 06-29-2007, 01:25 AM

I filled-up with about £60 worth of diesel on Monday. I've been travelling to my office every day this week.

Normally I work from home at least 2 days a week

OBC states that I've covered 430 miles with 120 miles remaining in the tank, so far and this doesn't cover my journey home tonight. I've averaged 44.1mpg

The journey is mixture of urban-crawl through a one-way system, to the M25 and then round from Watford to the M11 and then up to Stansted Airport followed by about 10miles (of spirited B-road) driving to where I live.

So far I'm very impressed with the economy. I haven't been 'ragging' it much, because of weight of traffic, but still chuffed none the less

Steve A · 06-29-2007, 02:47 AM

Quote:

Originally Posted by matlough

I'm getting about 29 mpg, and thats with a petrol! 26 seems shocking for an oil burner!

all of my driving is town driving and ive done a manual calculation which i think points to the fact that the OBC is wrong.

ive covered 404 on 13 gallons which equals 31mpg which is ok, why does the computer tell me otherwise

MattOz · 06-29-2007, 04:29 AM

I can come at this from a 535d perspective. I regularly get 500+ miles from a tank. The tank holds 70 litres, but I've never managed to put in more than 63! Anyway, the OBC for ages was telling me that I've been averaging 33.2mpg, dropping to 32.8 occasionally.

If I never get less than 500 miles from a tank, and have never put more than 63 litres in, then it stands to reason that I should be getting about 33.3 as an average! Damn those inaccurate OBC's. LOL

Having said that, if you don't reset the OBC regularly it'll take ages for the more realistic mpg figure to appear. Mine was showing 19mpg for ages following a dealer visit. it was clearly doing almost twice that, but the OBC hadn't caught up.

Oh, and in response to the first question, the engine will loosen up nicely at about 10k miles and you'll only then get a reasonably clear indication of mpg.

Cheers
Matt

LRS · 06-29-2007, 05:05 AM

Quote:

Originally Posted by MattOz

I can come at this from a 535d perspective. I regularly get 500+ miles from a tank. The tank holds 70 litres, but I've never managed to put in more than 63! Anyway, the OBC for ages was telling me that I've been averaging 33.2mpg, dropping to 32.8 occasionally.

If I never get less than 500 miles from a tank, and have never put more than 63 litres in, then it stands to reason that I should be getting about 33.3 as an average! Damn those inaccurate OBC's. LOL

Having said that, if you don't reset the OBC regularly it'll take ages for the more realistic mpg figure to appear. Mine was showing 19mpg for ages following a dealer visit. it was clearly doing almost twice that, but the OBC hadn't caught up.

Oh, and in response to the first question, the engine will loosen up nicely at about 10k miles and you'll only then get a reasonably clear indication of mpg.

Cheers
Matt

MattOz

Probably a really stupid question, but how do you reset the OBC?

LRS

red355 · 06-29-2007, 05:25 AM

Quote:

Originally Posted by LRS

Red355

How on earth are you managing to get such high MPG???

I really have been babying my driving for the last 1200 miles and have come nowhere near what your getting. What is your secret?

Also as Red-Max has asked - how many miles do you get out of a tankful, and what does the OBC show (range) after you fill up?

Thanks

been thru this many times...I don't why unless I have really good example
virtually no driving in traffic,usually 6am or 8pm to commute on A roads only a few mile of dual carriage way very few trips under 40 miles, OBC has shown up to 625 after fill up...typically 580 ish.

Real data from filling up not OBC
last 5498 miles 594.97 litres average 42.008 MPG.
best 44.12 worst 40.56 (when I tried BP Ultimate !)

overall since I first filled up 10th Oct 07
10,227 miles 1,121.53 litres
average 41.454 MPG @ average 10.33p/mile

NFS · 06-29-2007, 05:44 AM

I get a consistent 24 miles to the gallon and my chosen petrol (shell v-power 99ron) costs more per gallon than deisel.

Am I bothered?

Look at my face I'm not even bothered.

Dave_3 · 06-29-2007, 06:24 AM

Almost exclusively city stop-start driving for about 5 miles each way a day.

Presently sitting at 31 mpg.

Considering my Jag was averaging 16mpg over the same route, I'm happy

D.

MattOz · 06-29-2007, 06:43 AM

Quote:

Originally Posted by LRS

MattOz

Probably a really stupid question, but how do you reset the OBC?

LRS

LRS,

Use the left hand (indicator) stalk end to scroll through the 4 options in the middle of the instrument binnacle, mpg, mph,miles left in tank and nothing. When you get to mpg, reset it using the stalk. I think you press and hold for a few seconds from memory.

Cheers
Matt

Z4 Beemer · 06-29-2007, 07:02 AM

Quote:

Originally Posted by needforspeed

Am I bothered?

Look at my face I'm not even bothered.

LRS · 06-29-2007, 09:02 AM

Now we know why Needforspeed & Z4 Beemer find fuel economy so interesting, not.

Nice staff discount guys!!

Attachment 84157

NFS · 06-29-2007, 09:18 AM

Quote:

Originally Posted by LRS

Now we know why Needforspeed & Z4 Beemer find fuel economy so interesting, not.

Nice staff discount guys!!

Attachment 84157

Ferrari fuel for the road

330cdsport · 06-29-2007, 09:46 AM

My OBC is reading 33.2mpg although I have not reset it since the car was new (1500 miles ago). I have drove it relatively hard since new: i.e - no break-in period.

Defo more thirsty than my remapped 330cd manual.
Damn that slushmatic!!!

Z4 Beemer · 06-29-2007, 10:04 AM

Does the slushbox have different modes - like sport, economy etc... or am I thinking of autos from decades ago

Quote:

Originally Posted by 330cdsport

Damn that slushmatic!!!

06-28-2007, 01:17 PM	#1
LRS Dead Head 45 Rep 275 Posts Drives: E92 335d Coupe Join Date: May 2007 Location: (Then > Bay Area, Calif) (Now > Southeast, UK) iTrader: (0)	335d Fuel Economy Reduction During Break In Period? Hi All A questions about fuel economy performance with my new 335d. I have been driving it like granddad for the first 1200k miles based on the BMW advised break in period, but have found that I could not get anything higher than 34.8 MPG Combined (A roads and Motorway). I have heard of people getting near to 39 MPG! I have heard that other manufactures fuel management systems e.g. Volvo, run their diesels richer for the first 7k miles, thus achieving less fuel economy for the first 7k miles. Once the odometer has reached just over 7k, the fuel economy increases significantly. Does anyone know if BMW incorporates a similar approach with its diesel engines? Thanks LRS __________________ E92 335d SE Auto \| Space Grey \| Black Leather \| 19” 230 Star Spoke \| Comfort Access \| Lumbar \| Heated Seats \| Black High Gloss Trim \| Pro Nav \| Assist \| Bluetooth Telematics \| Voice Control \| High Gloss Shadow Line
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06-28-2007, 01:24 PM	#2
red355 Captain 32 Rep 665 Posts Drives: RS4 Avant V8 Join Date: Jul 2006 Location: GB iTrader: (0) Garage List 2008 GOLF GTI MKV [0.00] 2002 MINI Cooper S [0.00] 2006 E92 335D [0.00]	i was seeing 37 -40 for the first 2000 miles now I get 41 - 44mpg. everybody else seem to get much lower than me, but trust me I do not hang about. Rear tyres are looking quite used after 11k miles. __________________ RS4 Avant V8 Misano Red ¦ ¦ Golf GTI ¦ leather ¦ Past¦E92 335D Evolved (but still dull) ¦ Boxster S ¦ E46 328!SE ¦ E36 325! coupe ¦ E30 325! sport ¦ MINI Cooper S
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06-28-2007, 01:27 PM	#3
dxb335d The Tarmac Terrorist 944 Rep 29,345 Posts Drives: 997.2 GT3 Join Date: Mar 2007 Location: ''Fandango Towers'' iTrader: (3) Garage List 2010 Porsche 997.2 GT3 [9.50] 2003 BMW E46 M3 [6.00] 2007 BMW E92 335D [5.50]	on average anywhere between 32-42mpg __________________ 997.2 GT3
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06-28-2007, 02:05 PM	#4
ChrisMWard Captain 14 Rep 686 Posts Drives: E93 320d M Sport, E81 116d SE Join Date: Feb 2007 Location: Epsom UK iTrader: (0) Garage List 2006 120d SE [0.00] 2007 335d A M Sport [0.00] 1998 M3 Evo [0.00] 2002 330d Sport [0.00] 2004 330d Sport [0.00]	Managed 40 only on a long run to Cornwall. Last tankfull gave 34MPG, mixed driving, no complaints it's slightly better than our last e46 330d auto used to return. Regards Chris __________________ Previously: 2007 335D MSport E90 Le Mans Blue, 2004 330D A Sport Silver Grey, 2002 330D A Sport Saphire Black, 2001 320D SE Touring Titanium Silver, 1998 M3 Evo Techno Violet, 1996 328i Sport Montreal Blue, 1994 325i Coupe Red, 1989 325i Sport 2 door Dolphin Grey,1986 325i SE 4 door Lachs
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06-28-2007, 02:29 PM	#5
peterg1965 Brigadier General 164 Rep 4,190 Posts Drives: F30 335d M Sport, F15 X5 40d Join Date: May 2007 Location: The place of dark satanic mills, UK iTrader: (0)	My Focus ST has been returning much less than 30 Mpg and I can just about eek 31Mpg on a motorway journey by keeping at speeds less than 75. I am looking forward to being able to use a bit of that 335d torque and still significantly better fuel consumption And it would appear that diesel is cheaper than petrol at a lot of garages
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06-28-2007, 05:47 PM	#8
Steve A Brigadier General 96 Rep 3,465 Posts Drives: too much Join Date: May 2007 Location: Manchester UK iTrader: (0)	i get 26.6 mpg, this is the same figure before and after my remap, how on earth people get 35-40 is well beyond me __________________ C350 cdi sport estate facelift 457lbft 130i M SportMercedes C350 CDI Sport Estate AutoMini Cooper Auto.Mercedes E250 CGI,Lexus IS-F,R36, RS4 Saloon,ML 420 CDI SPORT,M6, 335d, C55, C32, M3, M5, S3, ALL SOLD but fondly remembered
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06-29-2007, 01:25 AM	#10
DervFan Captain 26 Rep 730 Posts Drives: BMW (E91) 325d M Sport Touring Join Date: Jun 2007 Location: East of England, UK iTrader: (0) Garage List 2006 325d M Sport T ... [0.00]	I filled-up with about £60 worth of diesel on Monday. I've been travelling to my office every day this week. Normally I work from home at least 2 days a week OBC states that I've covered 430 miles with 120 miles remaining in the tank, so far and this doesn't cover my journey home tonight. I've averaged 44.1mpg The journey is mixture of urban-crawl through a one-way system, to the M25 and then round from Watford to the M11 and then up to Stansted Airport followed by about 10miles (of spirited B-road) driving to where I live. So far I'm very impressed with the economy. I haven't been 'ragging' it much, because of weight of traffic, but still chuffed none the less __________________ E91 325d /// M Sport Touring \| Titanium Silver \| Black Dakota Leather \| Brushed Aluminium Trim \| 18" 193M Wheels 6-Speed Manual \| Cruise Control \| Bluetooth \| Heated Seats \| Professional Radio with MP3 \| Rear PDC \| Sun Protection Glass
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06-29-2007, 04:29 AM	#12
MattOz Lieutenant Colonel 342 Rep 1,829 Posts Drives: Alpina G21 D3S Join Date: Apr 2006 Location: Midlands iTrader: (1) Garage List 2011 E90 M3 [0.00]	I can come at this from a 535d perspective. I regularly get 500+ miles from a tank. The tank holds 70 litres, but I've never managed to put in more than 63! Anyway, the OBC for ages was telling me that I've been averaging 33.2mpg, dropping to 32.8 occasionally. If I never get less than 500 miles from a tank, and have never put more than 63 litres in, then it stands to reason that I should be getting about 33.3 as an average! Damn those inaccurate OBC's. LOL Having said that, if you don't reset the OBC regularly it'll take ages for the more realistic mpg figure to appear. Mine was showing 19mpg for ages following a dealer visit. it was clearly doing almost twice that, but the OBC hadn't caught up. Oh, and in response to the first question, the engine will loosen up nicely at about 10k miles and you'll only then get a reasonably clear indication of mpg. Cheers Matt
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06-29-2007, 05:44 AM	#15
NFS Major General 273 Rep 9,218 Posts Drives: M340i Join Date: Jul 2006 Location: UK iTrader: (0)	I get a consistent 24 miles to the gallon and my chosen petrol (shell v-power 99ron) costs more per gallon than deisel. Am I bothered? Look at my face I'm not even bothered.
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06-29-2007, 06:24 AM	#16
Dave_3 Brigadier General 652 Rep 3,445 Posts Drives: G22 M440D Join Date: Oct 2006 Location: CH / SCO iTrader: (0) Garage List 1973 Escort RS2000 MK1 [10.00]	Almost exclusively city stop-start driving for about 5 miles each way a day. Presently sitting at 31 mpg. Considering my Jag was averaging 16mpg over the same route, I'm happy D. __________________ Escort Mk1 RS2000 (2.1 2x44IDFS, BVH, Kent FR32, 5spd, 180 BHP) : M440D ¦ Previously : F32 435D : F32 430D M Sport sDrive, 335D E92 2006
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06-29-2007, 09:02 AM	#19
LRS Dead Head 45 Rep 275 Posts Drives: E92 335d Coupe Join Date: May 2007 Location: (Then > Bay Area, Calif) (Now > Southeast, UK) iTrader: (0)	Now we know why Needforspeed & Z4 Beemer find fuel economy so interesting, not. Nice staff discount guys!! Attachment 84157 __________________ E92 335d SE Auto \| Space Grey \| Black Leather \| 19” 230 Star Spoke \| Comfort Access \| Lumbar \| Heated Seats \| Black High Gloss Trim \| Pro Nav \| Assist \| Bluetooth Telematics \| Voice Control \| High Gloss Shadow Line Last edited by LRS; 07-18-2007 at 06:39 AM..
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06-29-2007, 09:46 AM	#21
330cdsport Right Responsible 58 Rep 1,646 Posts Drives: AW F21 M135i Join Date: Mar 2007 Location: N. Ireland iTrader: (0) Garage List 2011 535d M Sport [0.00] 2007 E91 320 M Sport [0.00] 2007 E92 335d M Sport [0.00]	My OBC is reading 33.2mpg although I have not reset it since the car was new (1500 miles ago). I have drove it relatively hard since new: i.e - no break-in period. Defo more thirsty than my remapped 330cd manual. Damn that slushmatic!!! __________________ Last: 330cd Sport - Silver Grey, 335d M Sport Coupe, F10 535d M Sport. Current: AW F21 M135i, Coral Red, Pro Nav, Vis, HK, & Clunky Adaptive Suspension Current: F15 X5 XDrive 40d M Sport - Space Grey, lots of toys.
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