13. Mercedes SL R107
This generation was in production from 1971 to 1989. The engine choices include one six-cylinder engine and several V8s with a range-topping 560 V8. We recommend you find a 450 or 500 V8 engine since they are the most popular and offer the best combination of power and efficiency.
Mercedes sold over 237,000 of those elegant convertibles during its 18-year old run. Believe or not, almost two-thirds of the whole production was US-spec cars. You won’t have any problems finding the right example. Be ready to pay around $25,000 for decent examples of this Teutonic power roadster (Via Mercedes).