Mercedes-Benz CLS

Mercedes-Benz pioneered the modern four-door-coupe segment with the original CLS nearly a dozen years ago. Now, the redesigned third-generation CLS continues to rely on the same recipe: a sleek, low-slung sport sedan with some compromised visibility and cabin access. Fit and finish is excellent, but the controls are complicated. The CLS seats five people. The base engine is a 362-hp turbocharged six-cylinder engine, marking Mercedes-Benz's return to a straight, inline six-cylinder. Basic driver assist systems are standard, including blind spot warning, active braking, and a driver-attention monitor.

The CLS has been extensively freshened and now has a 4.6-liter twin-turbo V8. An AMG version with a 5.5-liter delivers ferocious acceleration. The coupelike styling results in a low roof, small windows, and reduced interior space that limits access, visibility, and rear-seat room. Handling is capable and surprisingly agile for such a large car. The ride is firm but supple and steady. Noise levels are hushed.