2012 BMW 6-Series Fuel Economy

6.0
Fuel Economy
With a choice of engines, the 2012 BMW 6-Series lets buyers choose whether they prefer power and speed or more power and speed--there's no truly green choice between them, though the six-cylinder's gas mileage is somewhat better.

The 2012 BMW 640i (six-cylinder turbocharged) rates 23 mpg city and 33 mpg highway in Coupe form, according to the EPA; the convertible scores 21 mpg city and 31 mpg highway.

Stepping up to the V-8 engine in the 650i, the hardtops get 15/23 mpg ratings with the eight-speed automatic, while the six-speed manual scores 15/22 mpg. Soft-top models score identical numbers.

The 6-Series' gas mileage is somewhat astonishing for such a heavy high-performance vehicle.

Finally, there's the xDrive all-wheel-drive version of the new 6-Series Coupe, which pays a penalty of just 2 mpg on the highway in comparison to rear-drive V-8 models, at 15/20 mpg.

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