The current Lexus IS is renowned for its reliability and build quality. And while there's much to admire, it falls short of its German rivals in a number of ways. For a start there are only three engines: one diesel (which is now discontinued) and a pair of thirsty petrol units. It's quite cramped in the cabin and the interior design lacks sparkle. However, owners constantly rave about its comfort and Lexus’ dealer service. The high-performance IS F is a high-revving alternative to the BMW M3.