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      09-17-2012, 02:13 PM   #257
Carl L
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Drives: '15 M3
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Quote:
Originally Posted by US///M3 View Post
In town, the mpg of the S65 and a tuned 450 hp N55/54 are almost the same.
That may well be but this is a new version of the engine, not an aftermarket tune of the old one. MPG has risen exponentially over the last few years. A family member in Europe bought a 535d in 06/07 which delivered 270bhp and 35 euro mpg combined. The 3 liter block in the heavier F10 returns 310bhp and 50mpg combined.

Mercedes new 5.5 liter V8 returns more than 30mpg in the SLK. True, all of these figures will drop when driven hard but a TTI6 doesn't need to be driven above at least 3k at all times like our S65s.

Again, I'm a huge S65 lover but I don't think it can be denied the new one is almost certain to be far more efficient.
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