The BMW E12 is the first generation of the BMW 5 Series, produced from 1972 to 1981. It was designed as a mid-size luxury sedan, featuring a range of inline-four and inline-six engines. The E12 was known for its sporty handling and comfortable ride, making it popular among driving enthusiasts. The E12 introduced several innovative features for its time, including a more aerodynamic body design and advanced safety elements. It was available in various trims, including the performance-oriented BMW M535i, which showcased the brand's commitment to blending luxury with sportiness.