This steroid-enhanced version of the CLA-class comes with a potent 375-hp turbo four—need we say more? We will: There’s also a seven-speed dual-clutch automatic, all-wheel drive, and a sport-tuned chassis. The result is zesty performance by almost every measure. Unfortunately some cheap plastics and poor panel fits mar the interior, and the rear seat is extremely tight. Check a few options boxes and the CLA45 AMG can be a tough sell. Note: This model replaces the Mercedes-Benz version.