Maybe a stupid question...
Have owned a couple of Yanks recently, a 5.0 V8 and 3.8 V6, starting to get tired of the 20mpg and associated fuel bills. What's the best way to get good performance without pushing the mpg too low? Is there a way to do this? I'm not sure if a small engine with a turbo is any more efficient than a large engine without? What's the best I can hope for whilst still getting in the region of 200bhp+? Can't afford anything new and fancy though (e.g. duel fuel and what have you).
Cheers Dan