The MDX is powered by a 300-hp 3.7-liter V6 engine, mated to a five-speed automatic transmission with SportShift manual mode. Heated front seats, leather upholstery, tri-zone automatic climate control and satellite radio are standard on every MDX. Three premium amenities packages are available: the Technology package adds a navigation system with voice recognition and integrated rearview camera parking assist, upgraded audio, HandsFreeLink (Bluetooth) wireless connectivity and a power tailgate; the Sport package includes the Technology package, as well as a sport suspension with active damper system, exclusive wheels and upgraded interior trim elements; and an Entertainment package boasts Acura's DVD Rear Entertainment system and heated rear seats. Standard safety-enhancing features include anti-lock disc brakes with brake assist, SH-AWD, Vehicle Stability Assist (VSA) with traction control, Xenon High-Intensity Discharge (HID) headlights, front side-impact airbags, overhead curtain airbags for all three rows and active front head restraints. The Acura MDX carries over with minimal changes for 2009. A remote-operated power tailgate, formerly available only on MDX models equipped with the Entertainment Package, is now included in the Technology and Sport packages.