18: Chevrolet Corvette C4
The C4 Corvette is undervalued when it comes to the Corvette lineage. This Vette has a one-of-a-kind style you just don’t see anymore. The same goes for the performance that comes from the tried-and-true LT1 motor. You still see plenty of the C4 Corvette models on the road and the price is seemingly affordable for what you get (via Car Survey).
But after the C5 becomes unattainable, the C4 is only going to rise in value and this car will take an arm and a leg to buy. You will want to get a C4 before the price skyrockets because this car is a great deal. Many special-edition models have come and gone, and the LT1 is an amazingly simple engine to work on.