In 2003, BMW launched the third generation of the “Z” series. Following the Z1 and Z3, the new model faced a tough challenge in winning over customers in an increasingly competitive market. Available as both a coupe and a convertible, the Z4 was a success. It joined the large family of Bavarian sports cars thanks to its “M” variant. This version features the engine from the E46 M3, a 343-horsepower 6-cylinder. The Z4 M Coupe is the rarest version in the lineup, accounting for less than one percent of all Z4s produced—a true unicorn!