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Discussion Starter · #1 · (Edited)
Hello everybody, I am a new BMW owner and new to the forum. I have bought a 2006 E91 320D M Sport Touring with 19K on the clock... very nice. My one disappointment is the fuel consumption. The published figures for this model are 62.9 extra urban and 49.6 combined. Now, I realise that, in practice, it is virtually impossible to achieve these figures but on a long run of 300 miles, nearly all motorway, the best I can get is 38.1. That falls a long way short of the expectations set by the figures. There is one other symptom ... If I have to slow down on a long hill like the one on the M40 near High Wycombe I have to change down to 4th to resume my speed again. I.E it seems a bit short on torque. I explained all this to the main dealer and BMW customer services and booked it in for a diagnostic. The result was - no fault found, no error codes, reset the trip after each journey for a more accurate reading, thank you very much that'll be £35 quid please. After reading this forum I phoned Simon at E-maps who was very helpful. His immediate response was "sounds like a classic airflow sensor problem, did they drive the car?" They didn't. He said the only way to test for this is to drive the car with the dianostics running. So, back to the dealer. He has agreed to do this tomorrow (Wednesday) but with a warning that it might cost me another £35 quid if no fault is found. I would like to ask the forum if you feel there is a genuine problem here or am I being picky? I would particularly like to hear from owners of similar cars as to what mpg they are getting. Mine is a 163bhp model and, on motoways, I drive above the limit but I don't thrash it. Any help you can provide will be much appreciated.
 

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I've got the 163 bhp E90 320d. On the motorway, sticking to 80 mph I get about 50 mpg. When you say you exceed the speed limit, what do you mean? I guess if you're continually doing 100 mph, 38 mpg might be reasonable.
 

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Is that 50mpg indicated on the computer?





Jesus

WTF is wrong with our cars then?

Im sticking to 70 on the money and 38 would be the upper most




:eek
 

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Discussion Starter · #8 ·
Took the car in again today. No fault found! Drove on motorway with the technician and his computer. At a constant 75mph the analogue indicator, my trip computer and the techie's computer all showed 50mpg. It must be that the consumptions rises very steeply at higher speeds but I am not totally convinced. Have done circa 30 miles of urban type driving since the test and my obc is still showing 42.7mpg - higher than it's ever been. I think they re-coded the car this morning and maybe that has made a difference. I'll update the thread in a couple of weeks.
 

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Mine has been at BMW all day. It isn't well at all. The diag showed no engine faults but the steering rack needs a software update, the gearbox and clutch need to come out and there is a potential fault with the turbo actuator.

To be fair to BMW, they accepted that the car was sluggish and that 38mpg wasn't right. They are going to take it apart under warranty and replace whatever is wrong.

Not pleased as I've only had the car 2 weeks, but if they sort everything out, I may be pleased.

So to summarise, 38mpg isn't right at all!
 
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What you are saying really is that my car is fooked too if its norm is 38mpg on the M'way?

Brilliant.

And its a 2005 car so NO warranty.





Can you let us know exactly what gets done to your car so those of us outside warranty can get it looked at without being shafted.

:(

JJ
 

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So what's the story here then?........





I had mine at a BMW specialist last night and he plugged in some wee bosch handheld trickery that showed no engine errors at all.




Is this something that BMW can take action against if a car is returning poor mpg?

Can this be down to a MAF sensor etc?

The other half advised that its now showing an average of 29.9 MPG on the OBC. :eek

My feckin Civic returns more than that and i drive it like i stole it.

Need ideas people as the economy of this car is appalling compared to other marques.

Regards
JJ
 

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Have you tried resetting the OBC? then take a figure off of it, also will be worth cleaning out the EGR valve if it's never been done, they can get really dirty if the car has done lots of short journeys
 

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My 06 plate 320d M sport has been to BMW twice for poor MPG. I'm on 30.2 at the moment with a mixture long and short trips. When I first took it in, the computer was showing 27 mpg. Both times they have come back with no fault. If I reset the car when on a motorway and stick to around 65 mph, I can just get 40 mpg.
They said the service department quote very different figures to the sales department, I told them that we have a 58 plate 320d coupe on our fleet and it returns 40.2 all the time and thats mainly short trips. The response was that it's a newer engine. I'm a little concerned as my warranty runs out the end of March, wouldn't surprise me if they discovered a fault then.
 

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:confused



23.9 MPG NOW




Not acceptable.

If this keeps up ill have to shift it and get a passat as i know they actually produce the goods.

That would gut me as i love this car.

JJ
 

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fuel economy on these cars

these figures are quite suprising

i have a 330d 2001 manual, with over 100k and around town mainly and some motorway it gets a minimum of 38mpg

on a motorway run at 70 its 50mpg+ approx

i have monitored the litres and mileage constantly since i have got it, the trip computer is not entirely accurate somtimes, as it says you have done better than you actually have

just my 2 pence worth, but i hope you get your cars sorted soon
 
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