BMW 6-Series E24
When they presented it in 1976, the new 6 Series was BMW’s entry in the Gran Turismo market. Also, it was one of the most elegant coupes of the period with its recognizable design, four headlights, and a big BMW grille. They built the 6 Series on the 5 Series base, but it only featured those powerful six-cylinder engines.
The 6 Series proved to be popular, spending over 13 years on the market. BMW managed to produce over 100,000 of them, all of which are still highly-desirable models on the used car market. Interestingly enough, more than half of the examples BMW produced were sold in the USA.