The BMW Z4 roadster enjoys an iconic status in today’s sports car world. It shares a number of components with the Toyota GR Supra, and both cars are built at the same Magna Steyr plant in Austria. Two different engines are available with the Z4 starting with a turbocharged 2.0-litre four-cylinder that serves up 255 horsepower. For more spirited performance, consider the M40i model whose turbocharged inline six-cylinder engine delivers 382 horsepower.