Mercedes-Benz has equipped the 2011 M-Class with a seven-speed automatic transmission, automatic climate control, a multimedia radio unit with in-dash six-disc changer, auxiliary input jack and Bluetooth hands-free connectivity, cruise control, automatic headlamps, heated and auto-dimming exterior mirrors, multifunction leather-wrapped steering wheel, outside temperature display, 19-inch wheels, power glass sunroof and a four-way adjustable steering column. Standard safety equipment includes the Pre-Safe system as well as an array of passive and active safety technologies, including front, front-side and front and second-row side-curtain airbags.