The C250 and C300 trims all come standard with 17-inch wheels, automatic headlights, LED running lights, automatic wipers, a sunroof, cruise control, dual-zone automatic climate control, eight-way power front seats (with adjustable lumbar), MB-Tex vinyl upholstery, a tilt-and-telescoping steering wheel, auto-dimming interior and driver-side mirrors, Bluetooth phone and audio connectivity, and a sound system with a CD player, auxiliary audio jack, a USB audio jack and HD radio. The C300 4Matic adds all-wheel drive and a V6 engine. In sedan form, the C250 and C300 are further differentiated into Luxury and Sport sub-trims. These differ in wheel design, suspension tuning, styling details, steering wheel design and interior trim type. When equipped with 4Matic all-wheel drive, the Luxury also includes a comfort-tuned suspension. The Premium 1 package adds on four-way adjustable lumbar support for the front seats, heated front seats, driver memory functions, a power-adjustable steering wheel, split-folding rear seats and a Harman Kardon surround-sound audio system with satellite radio and an iPod interface (optional separately as well).