Quote:
| Originally Posted by Thunf Indeed, E55 V8 kompressor uses almost as much fuel as the small M3 - but not really, slightly less. CO2 (Carbon dioxide) is measured as a funtion of fuelconsumption. |
I won't speak in metric ratings, just U.S. ratings, and the E55 is not more efficient than an M3. If you want to talk emissions, the E55 emits more "greenhouse gases"
carbon dioxide being one of them, than an M3. But neither could be labeled "efficient".
Talking about CO2 output is kind of pointless, since none of the cars we've mentioned are even remotely fuel efficient. These are high performance cars, and they suck gas pretty hard.
Alpina does not have one up on BMW, in fact BMW supports their efforts. The B5 is a 4.4 V8, not a 5.0 V10 - this explains a lot. And an M5 would not be an M5 with an Alpina supercharged engine. It's apples and oranges really. In fact I wouldn't be surprised if the B5's efficiency was a little over rated.