The higher the score, the cleaner the vehicle's emissions are.
2012 Mercedes Benz SLK-Class Overview
Still the big dog. The 2012 Mercedes Benz S-Class remains the prototypical full-size luxury sedan, and the complete luxury package. It's suitable for quiet, rock-steady cruising at Autobahn mega-speeds, spirited drives through the countryside, unflustered dawdling through heavy traffic or chauffeured escape from the grind. S-Class safety systems are unparalleled, and this sedan is huge inside.