4. Cadillac ATS

Complex Says: Cadillac promised that the ATS would be like the BMW 3-series, but a little bit better in every way. The specs are promising, but we're reserving our opinion until we've driven the two. It still seems weird that Cadillac has made a lightweight compact wagon powered by a four-cylinder turbo engine with optional all-wheel drive. The new GM really is a new GM.