13. Cadillac CTS
If you’re looking for a sport sedan that rivals the BMW 3-series and 5-series, the Cadillac CTS is where it’s at. With a twin-turbo V-6 and the luxury of targeted performance, the CTS should have taken off when it was unveiled in 2014. Sadly, it only pushed upwards of 30,000 units in lifetime sales. The truth is, it’s a better car than the BMW, but Cadillac sticklers are simply rejecting the new direction the company is going.