No cosmetic improvements to the S-Class this year; everything new is under the skin. ESP is standard on the S600 and optional on V8 models. ESP is a stability control system designed to help the driver keep the S-Class under control at all times. V8 and V12 versions get a new five-speed automatic, and all models get a standard power glass sunroof and smog-sensing climate control system. The S350 Turbodiesel is history.