Until the introduction of the BMW 518i (1993), the BMW 520i was the basic model of the BMW 5 Series. It is equipped with a 2.0 litre inline six-cylinder engine that was also installed in the 3 Series. The engine generates 129 hp. In May 1990 and September 1992, new engines from the M50 family were installed. These deliver power of 150 hp and can achieve lower consumption as a result of new technologies. 383,826 units of the BMW 520i were built and the car was manufactured until production of the BMW 5 Series Sedan was discontinued in 1996.