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M550d
Apr 30, 2017 18:34:01 GMT
Post by Nelson on Apr 30, 2017 18:34:01 GMT
Slightly off topic, but in the same vein as performance diesels I was reading Autoexpress's long-term test of the Audi SQ7 and despite all that power they averaged just 22.5mpg (probably because it weighs as much a moon), but low 20's on a diesel does whiff of pointless to me and I can't see this near 400bhp quad-turbo'd BMW achieving much more in the real world. Low 20's for that performance and weight is impressive - if it was a petrol and driven by journo's in the same manner then you'd probably see 15mpg, so it's a 50% improvement on that. Great Q-car no doubt, money no object I'd love one, but it really is rather pointless isn't it, as Martin says, a 535d engine makes more sense in the real world. The T8 engine from an XC90 isn't perfect but it shows it's the way forward, combining both economy with pace really is a major draw at the moment, pure diesel power alone that can only achieve a realistic low 20's the gallon is looking rather ridiculous now and I can only see this BMW being sold in very small numbers. |
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M550d
May 3, 2017 15:55:38 GMT
Post by Deleted on May 3, 2017 15:55:38 GMT
^ So if it's electronic, why isn't it upwards (towards the front of the car) for going forwards (D) , and backwards (towards the rear of the car) for reverse? That would surely be more logical You'd think but having gone back to an Auto with this I naturally just pulled back for D. Probably a result (as has been said) of years of driving auto's were you always pulled down from P (through R) to D. |
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M550d
May 8, 2017 8:53:28 GMT
Post by alf on May 8, 2017 8:53:28 GMT
Nelson, it does exist, a 335d/535d gives you plenty of performance for the road with 40+mpg a reality. I've been doing a bit more motorway running than usual recently and have averaged a true 44mpg over the last month / 2,500 miles. Even better is the 650miles I've been getting from a tank. That is impressive, for a heavy powerful car. I might get 27 in the same circumstances as a comparison. I often wonder what the bigger, powerful diesels get in the real world. One thing that is certain from looking at things like the SQ7 test mentioned, is that big SUV's with enought power to make them feel at all brisk will cane you for fuel, whatever the type used... For me the biggest losers in the real world vs the claimed figures are cars with small engines. At a typical motorway cruise of an indicated 80, where much of us spend much of our time, they get nowhere near the claimed figures whereas pokey petrol engined stuff driven thus will easily beat their claimed "combined" fuel figures. In the XFR, as in the GTA, I average well over the official combined figure because I do a lot of motorway driving. Give me a tiny engine boosted to beyond what is natural, especially in an MPV or SUV body, and that would never be the case. |
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M550d
May 8, 2017 10:58:44 GMT
Post by Tim on May 8, 2017 10:58:44 GMT
I was getting around 42 - 45 from my 530d, I thought that was not bad for an old school diesel with a 5 speed box and 130k miles.
I even saw 50mpg on the fuel economy swingometer once while cruising at 100 on a flat autobahn!
For a small loss of economy you also get a nicer engine sound.
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