I was looking for more info on this - that doesn't come straight from the horses mouth. What does each feature add to the economy? And what sort of figures are end users actually getting in non-lab conditions?
Tried google but not getting much that isn't fawning press release
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Do you suppose a 2.0 litre diesel 5 series can actually achieve 55mpg like quoted?
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Do you suppose a 2.0 litre diesel 5 series can actually achieve 55mpg like quoted?
Might I suggest you find out a little about Efficient Dynamics before passing comment?
Efficient Dynamics is excellent and, IMHO, the short term future for cars, it's far more realistic and usable than Hybrid.
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Do you suppose a 2.0 litre diesel 5 series can actually achieve 55mpg like quoted?
I can do cynicism myself! But I'm looking for facts.
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Even if it could it never will . . . .
By definition the people that buy BMWs do not drive in a manner that will achieve the best economy!
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I had a brand new (not run in at all - just covered a few hundred miles) 123d on a 48 hour loan a few weeks ago, with all the new Efficient Dynamics features.
The stop-start I thought was excellent. It only worked under certain circumstances (eg engine must be warm), I don't really know what these were but would say it worked on 80% of occasions when I was driving). Never failed to re-start instantly on depressing the clutch, and quickly enough to avoid any delay or inconvenience.
The gear change indicator was a bit pointless I thought - a little display that tells you what gear you should be in for the speed you are doing, for optimum fuel consumption. Something I would hope most drivers don't need though perhaps some would find it useful. On the occasions it disagreed with my choice I was fully aware that my gear was not optimum but I was trying to drive for pleasure as well as economy!
I know there are other things like the charge on over-run but harder to quantify or describe.
Overall the car got about 45mpg driven fairly hard, the same type of driving that would get nearer to 35mpg in my Focus 2.0tdci (bear in mind the extra turbo and 70 more hp as well in the 123d). If driven lighter it would have got even higher, and this would improve still when the car was better run in.
Fantastic car, and definitely on the shortlist to replace my Focus when the lease expires. By far the best diesel car I've ever driven, absolutely no turbo lag at all, with plenty of power. The model was an M Sport with plenty of extras (list price £36k)
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I'd should hope it would be marvelous compared to a focus when it lists at £36k! (should that be 1 or 2 'l's in marvelous?)
Edited by nick on 20/12/2007 at 12:35
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Yes, I think I would buy another Focus for, say £13,000. You could buy a lot of diesel with the £23,000 you save!!
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Not disputing for a second the merits of a Focus vs the 123d - but don't forget that a more normal spec 123d would cost a lot less than £36k. My Focus 2.0tdci Titanium (a company car) lists at over £18k so at maybe £25k for a 123d M Sport the differential isn't quite so big.
However the key is also to look at what other BMWs you could get for your money. A 325d is well within reach for the same price as a normal 123d and you're in 335d territory once you get one loaded with all the extras.
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Yes, as (very) impressive as the twin-turbo 4-pot in the 123d sounds, surely a 6-cylinder would be a better bet?
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Yes, more than likely. I haven't driven a 335d for about 6 months (though remember it to be absolutely fantastic), would need to drive back to back to make an informed decision.
However as a young whippersnapper (just 21!) I don't really have need for a saloon like the 3 series and a nice quick 1 series would probably suit better. Also the Efficient Dynamics (back to the original reason for the thread!) will no doubt mean the 123d is in a cheaper tax bracket than the 6 cylinder 3 series cars so keeping the company car tax low. That said, I've felt very at home in a loan 3 series this year on more than one occasion so maybe will need to look at those as well!
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Blimey, whippersnapper indeed! And a lucky one at that!
Yes the 123d is clearly going to be more efficient from a fuel consumption and taxation point of view, but then there are the more intangible things to consider when choosing a car ...
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I have owned a 120d for 6 months. It is the pre-facelift, pre ED model, and it cost me £12k used.
It's a good car, and I'm glad I bought it but I certainly wouldn't contemplate spending £36k on a 1-series, even one with 2 turbos.
£36k is a hell of a lot of money, and for that, I would want a 535d, Range Rover, M3, Porsche Cayman, X5 or at least 3 diesel hatchbacks.
Edited by bradgate on 20/12/2007 at 18:14
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My 120d se (20k on the clock) regulary gets 45-48mpg, good figures BUT as most BMW drivers would admit you'll never get the claimed consumption
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I must be doing something right then - the "official" mpg for the 335d is 37.7 (combined) - mine's currently around 38.5, which I don't think is too bad considering the performance.
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There's one interesting point with the gear "advisor" on the dash of my diesel model - I always assumed that a higher gear would be more economical - however sometimes it advises me to change down and to my surprise the instantaneous mpg figure is actually better ina lower gear
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Because a labouring engine wastes fuel.
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max torque is 1800rpm in my car but I'm talking about 1500revs and going down hill - hardly labouring
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