300 HP 

On a list of cars powered by honking V8 engines, the S60 R stands out with a turbocharged inline-five, and that boxy, Swedish styling that’s so hard not to love. Depreciation hits these cars hard, however, which is why this is the cheapest route to 300 horsepower on the list. It barely edges out the big V8-powered Pontiac, though if you find an S60 with under 100,000 miles the price will jump up.