Completely redesigned in 2010, the BMW Z4 is right up there with the big names, including the Audi TT, Mercedes-Benz SLK-Class and Porsche Boxster. With its hard top on, the Z4 is an excellent coupe. Two 3.0L inline-6 engines are offered, one producing 300 hp and the other 335, which is more than enough for a car weighing approximately 1,600 kg. This year, there’s also a 241-hp 4-cylinder turbo available.