1. What is the history of the BMW 540i through the E34? The third generation 5 Series started arriving in late 1987. Totally redesigned, very similar to the 7 series, the new body was stiffer, offered less wind resistance, improved upon the front/rear aerodynamics and improved crosswind stability. The cars were lighter and offered more interior room. Introduced with five basic models, by the end of production taking into account engine combinations, 18 types of the E34 were available with a power range of 113 horsepower to 315 horsepower.