The MDX is powered by a 300-hp 3.7-liter V6 engine, mated to a six-speed automatic transmission with Sequential SportShift manual mode and paddle shifters. A power moonroof, power tailgate, 18-inch alloy wheels, heated front seats, leather upholstery, tri-zone automatic climate control, satellite radio and HandsFreeLink (Bluetooth) wireless connectivity are standard on every MDX. Three premium amenities packages are available: the Technology package adds a voice-activated navigation system and upgraded audio with USB port and 15 gigabytes of hard drive media storage; the Advance package includes the Technology package content, as well as a sport suspension with active damper system, exclusive 19-inch alloy wheels, and ventilated front seats; 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, Vehicle Stability Assist (VSA) with traction control, Xenon High-Intensity Discharge (HID) headlights, front and front side-impact airbags, overhead curtain airbags for all three rows, active front head restraints and rearview camera parking assist. The Technology package adds a multi-view rear camera, while the Advance package also includes a blind spot information system, Adaptive Cruise Control (ACC) and a Collision Mitigation Braking System (CMBS). Following a complete redesign last year, the Acura MDX carries over unchanged for 2011.