The BMW E12 was presented in 1972 in Munich, year of the official opening of the BMW headquarters, the famous 'four cylinders'. Quickly, the Germans called it 'the 5': expression which will be the origin of the organization into a hierarchy of the BMW models. Fruit of 4 years of preparation, the series 5 E12 was commercialized until 1981. It was equipped with a 4-cylinder in line of 2.0l developing 130hp. Two years before the stop of the production, in 1979, BMW Motorsport revealed the M 535i. Sporting model of the BMW E21 and ancestor of the M5, it develop 218hp. In 1981 appeared the succession of the model E21, the BMW E28. Esthetically differentiable thanks to its bumpers or its bigger round lights, it represented however a change by adopting an engine turbo Diesel of 2.4l for 115hp, which was added to the petrol block. This model is also the origin of the first M5, a name which allude to the sporting reference today. This first model was equipped with a 6-cylinder in line of 3.5l for 286hp, which made it at that time, the fastest car in the world!