03-15-2013, 12:56 PM | #1 |
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320d MPG
I have a 320d Luxury auto and the best MPG I seem to be able to achieve (according to the computer) is an average of 43-45mpg. I do a mix of town driving with a few longer runs in between. The car takes a long time to get up to full operating temeperature so maybe this is the reason for poor fuel economy?
I had an e90 320i se (pre ED model) and on similar runs I was getting 35mpg + so from a diesel I was expecting at least 50mpg Not sure whether I need to go and get this checked out or whether this is normal?
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03-15-2013, 01:37 PM | #3 | |
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Diesels also require a different driving style to Petrols to achieve best results, although as you have an auto, that helps bridge the gap....but if you are doing a fair amount of Stop/start driving, then your figures are probably about right. Give her a long steady run and report back |
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03-15-2013, 02:03 PM | #4 |
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If its put in perspective I have a 120d e82 auto that has done 35k since new. Until the recent battery slow death I had not reset the fuel computer for about 30k miles.
It showed as 36mpg. However when I first got it i drove from my office to canary wharf in silly fuel save right foot mode, its about 45 miles and i achieved well over 60mpg average. |
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03-16-2013, 02:49 AM | #6 |
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I'm averaging in the mid 51s from brim to brim calculations or mid 54s according to the OBC. I probably do about 30-40% urban driving then the rest is on the motorway at 70ish. I used to use EcoPro a lot but saw no major difference to when I just left it in Comfort
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03-16-2013, 04:15 AM | #7 |
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My OBC is at 48.8, mixed driving and 90% of the time in sport if not more, going for a 180 round trip this weekend so hope to see a better result !! will post after
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03-16-2013, 06:00 AM | #8 |
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my car has now done 6.5k and avg 52mpg in that time... not bad for 6 weeks....
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03-16-2013, 07:03 AM | #9 |
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I drive in sport suspension/steering normal gearbox all the time.
44 MPG constant now, plenty of blasts in the 330D M Sport. Going to get a big shock in the M5
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03-16-2013, 07:10 AM | #10 |
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I get about the same as the OP for my daily commute (23 miles each way, half town, half dual carriageway).
On a longer run of mostly m'way/duals I get around 56mpg. Good enough for me, as my previous Merc SLK petrol did 24mpg, and I used to be filling that every week. Now I fill up once every 18 days on average, in a car with a 13 litre smaller tank. Even with the price difference between petrol & diesel, I'm paying nearly £20 less per tank and running nearly 3 times longer than in the SLK. Very happy |
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03-17-2013, 09:38 AM | #11 |
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Well the round trip was 163 miles, shame about the road works on the M8 and the fact it snowed on the way down, dissapointed that I could not sit at 80 for longer than 2 minuets.. On the way back Bloody cup final traffic leaving edinburgh slowed me down as well. Still over all OBC 55 mpg and buy the fill up 53mpg true, not bad..
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03-22-2013, 11:12 AM | #12 |
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My 320d has done ~5k and is on ~50mpg (brim to brim calcs and OBC within 1pmg).
Normal run to work is mixed town and dual carriageway and I aim for 55mpg average each day!
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03-22-2013, 11:29 AM | #13 |
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Sounds like the 320 does about high 50 average and the 330 about 40-45 average. Sounds about right (claimed - 10)...
bizarrely the 2 320d luxury data points seem about 5mpg lower than the others... maybe luxury = less frugal?
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03-22-2013, 11:35 AM | #14 |
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Auto? Or more kit to lug about
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03-22-2013, 12:03 PM | #16 |
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the latter I'm thinking - autos are supposed to give better mpg, right?
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03-22-2013, 03:06 PM | #17 |
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43-44mpg for me. My round trip is about 10 miles a day so no chance I'm getting the car up to temp. Occasionally do a long drive and have got close to 55mpg.
I drive in sport mode 99% of the time.
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03-22-2013, 03:21 PM | #18 |
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Sounds something like to me. In my e87 116d I get around 45-48 with a 30 main commute to work with a mix of a roads and motorway. One thing to bear in mind is that cold temperatures really effect diesel engines. Any thing below 5 degrees and its normal to see 10 - 15% reduction in economy. All of these are reasons why I have gone back to petrol in the shape of a 320i. No tractor noise, power throughout the rev range and still it should return decent economy, and with petrol being cheaper than diesel then I reckon running costs won't be too far off for me over 12000 miles a year. And that's neglecting the initial purchase price.
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03-22-2013, 04:09 PM | #19 | |
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As for the rest...
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03-23-2013, 10:50 AM | #21 | ||
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The other factor I've observed, petrol typically has a much closer mpg to diesel than we may think, when we make short trips in winter time. I posted these comments just this week on another forum. Quote:
Most winters we get a cost premium up to 10 pence a litre on diesel fuel. This winter we peaked at 11 pence up here, still around 7 pence. HighlandPete |
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