After seeing several improvements last year, the A4 returns for 2009 available in Sedan, Convertible, and Wagon bodystyles. Standard luxury amenities across the board include automatic climate control, alloy wheels, an alarm system, keyless entry remote, and a stereo system with a six-disc CD changer. Roadjet technology is equipped on certain interior features, including the seats and sound system. Available options on the A4 include Bluetooth Wireless technology, a DVD-based navigation system, unique interior wood trim, and rear side impact airbags. The optional Sound Package includes a Bose AudioPilot sound system and a Sirius radio feature.