If you're in the market for a Coupé it's well worth looking at the Audi TT Coupé, but the BMW 2 Series Coupé is cheaper, stylish and has substance, too, including its relatively practical and smart-looking interior. The diesel engines are all great performers and cheap to run (if a little gruff), while the M240i's six-cylinder turbocharged petrol engine is both sonorous and seriously quick.