14. BMW 6-Series E24
When BMW introduced it in 1976, the new 6 Series was their offering in the Gran Turismo market. It was one of the most elegant coupes of the day. They gave it a recognizable design, four headlights, and a big BMW grille. Interestingly, they built the 6 Series on the 5 Series base featuring nothing but six-cylinder engines.
The 6 Series proved to be popular and spent over 13 years on the market. BMW managed to produce over 100,000 of them, which are still highly desirable on the classic car market. Better yet, they sold more than half of them in the USA.