4. BMW E30 M3
The BMW E30 M3 has become an icon thanks to its deep motorsport roots and razor-sharp handling. Originally designed as a homologation special for touring car racing, its boxy flares and high-revving four-cylinder engine have made it a legend among enthusiasts.
As the years have passed, pristine examples have become increasingly rare—and values have soared accordingly. Recent auction results show well-kept E30 M3s selling for over $100,000, many times their original price. This dramatic appreciation is well documented by Hagerty’s valuation tools, illustrating just how sought-after this classic has become.