What about a volvo, something like a s40, v40, good choice in engines, d4 2.0 5 cylinder diesel, 177bhp 295 ftlb, with massive remap figures, stage 1 ecu removal/remap,boosts it to 215bhp and 340ftlb, still achieving 43mpg average.
Or a choice of the t engine engines masses of power with decent mpg.