2. BMW M1
Back in the mid-1970s, BMW thought that it would be appropriate to enter the exclusive sports car market. Basically, BMW needed a halo car, but the company didn’t have experience and turned to Lamborghini. At first, it looked like the deal was a good idea, but Lamborghini didn’t deliver on time, so BMW disbanded the partnership and finished the project by itself. In 1978, the BMW M1 debuted (via BMWM).
The heart of this sports car was BMW’s famous M88 six-cylinder engine with 3.5-liters of displacement. It had advanced fuel injection, and 273 HP, which was a pretty high number for the standards of the day. However, the customers were unimpressed, although the car was good-looking and fast. In three years, BMW made just over 450 cars. Calling M1 one of the worst cars BMW has ever made is a bit of a stretch. However, the financial hit, and embarrassment this model caused to the brand cannot be ignored.