In 1990, BMW introduced their most focused version of the E30 M3, the Sport Evolution. Also known as the Evo III, the Sport Evolution M3 was even lighter and more powerful than the M3 Evolution. The S14 inline 4 engine was enlarged to 2.5L and capable of producing 235hp. The Sport Evolution also featured a few cosmetic changes such as larger front bumper openings as well as an adjustable rear wing. Only 600 examples of the Sport Evolution were made, making this car one of the most desirable examples of the M3.