The C280 Luxury sedan comes with the same comfort and convenience items included in the C230. The primary difference is the C280's engine: a 3.0-liter version of the new V6 rated at 228 horsepower. The C280 also comes standard with the industry's first seven-speed automatic transmission, 16-inch wheels and all-season tires, and wood interior trim rather than aluminum. A Sport model can be equipped with the seven-speed automatic transmission as an option. All-wheel drive, which Mercedes calls 4MATIC, is available. 4MATIC comes packaged with heated front seats.For 2006, the Mercedes-Benz C-Class gets a line of new V-6 engines.