3: BMW M1
The M1, BMW’s original BMW Supercar, was a startling mix of high-tech design combined with a lack of engineering. The M1 was perhaps one of the most unreliable BMW models ever made. Considering how high the initial price tag was, that isn’t necessarily a good thing either.
BMW was going for a groundbreaking sports car, but the end result was anything but (via Car & Driver). There are many notable sports cars in the history of BMW, but the M1 might possibly have been the worst. With the lack of reliability and the high price tag, the car was everything you don’t want to get stuck with.