Keeping with the K8’s eight theme, the Pontiac G8 is the perfect addition to this list. Sold in the US for only two model years, the G8 was essentially a rebadged Holden Commodore that was built in Australia. Today, used prices are pretty affordable, though we’ve gone through the trouble of ruling out the V6-powered models because they are far from impressive. We’d at least suggest the 6.0-liter V8-powered GT model, which can be found starting around $12,000.
The G8 GT produces a strong 361 hp, but only comes paired to a six-speed automatic. True enthusiasts will want to seek out the rarified G8 GXP model, which borrows the 6.2-liter LS3 V8 from the C6 Corvette. This engine produces a more thrilling 402 hp and comes with an optional six-speed manual. GXP prices start around $30,000, with the rarified manual examples commanding up to $45,000.