Price when new: $23,500 (manual, soft top)
Dealer used price: $18,501
Private-party price: $16,967
Certified used price: $20,197
MPG (city/hwy): 22/28

The third-generation Miata roadster is available with a soft top or a retractable hard top. Its four-cylinder engine, mated to a five-speed manual transmission, puts out 167 horses, and it gets 28 mpg on the highway. Plus, zoom-zoom driving dynamics are baked in.