4. Cadillac ATS 2.0L Turbocharged Four-Cylinder
As for General Motors, its 2.0-liter Ecotec turbo now powers its Cadillac ATS model offering 272 hp and helping it earn a nominee as 2013 AutoGuide’s Car of the Year. In fact, when we got our hands on the ATS at Atlanta Motorsports Park, it was undoubtedly more fun to drive than the BMW 3-Series. Packed with plenty of technology and luxury amenities, the engine isn’t all the Cadillac ATS has going for it.