The Mercedes-Benz compact C-Class sport sedan is available in the U.S. with three different engines. C300 models have a 228-horsepower, 3.0L V6 engine, while C350 models get a 268-horsepower, 3.5L V6. The high-performance, limited-production C63 AMG comes with a 451-horsepower, 6.3L V8. Several different transmissions and drive systems are offered: A six-speed manual is standard on the C300 Sport model, but the C300 Luxury and C350 Sport come only with the seven-speed automatic transmission, which is optional on the C300 Sport. Both the C300 Sport and Luxury models are newly available with 4MATIC all-wheel drive. The new AWD system cuts weight and complexity by being integrated into the automatic transmission. The full-time system is optimized for wet and dry-road traction. C300 models come either in Luxury or Sport, but the C350 comes only in Sport trim. Luxury models come with a more traditional appearance, with a chrome grille and the three-pointed-star hood ornament, while the Sport model has a more aggressive front end that takes after the styling of Mercedes-Benz coupes. Each model also gets unique trim and wheels to fit. The C-Class has very supportive, comfortable front seats with plenty of head and leg room, but the back seat is somewhat tight compared to other cars its size. A single COMAND controller system replaces many smaller buttons providing a clean instrument panel appearance. In either model, ride comfort is impressive. Luxury models come with a Comfort Suspension, incorporating a special damper system that effectively has two modes--a stiff one for uneven surfaces or quick handling motion and a softer one to damp out vibration and road noise. The C63 AMG model starts with the same foundation as the other models, but it has plenty of cues to indicate its left-lane status. Fender flares, a bulging hood, larger front air intakes and LED taillamps help identify it on the outside, and inside it has special sport seats and distinctive trim. The powerful V-8 engine teams with the seven-speed automatic to reach 60 mph in only 4.3 seconds and a top speed of 186 mph, and it has the upgraded brakes and suspension to match. With the addition of pelvic airbags for 2009 on C300 and C350 models, the C-Class offers a very impressive level of passive and active safety features. Front side airbags and full-length curtain bags are standard in addition to the pelvic bags. Electronic stability control is standard, along with adaptive braking, and a brake-drying feature activates with the windshield wipers to help maintain peak brake performance even when wet. The C-Class, no matter what the model, comes very well equipped as a luxury car. Major options are left to a navigation system, harman/kardon surround sound audio, a panorama sunroof, and special trims and wheels. Sirius Satellite Radio is available.