The 2012 Nissan Xterra is a four-door, five-passenger SUV thats offered in three trim levels. The X comes standard with 16-inch steel wheels; rear privacy glass; roof rack side rails; keyless entry; air-conditioning; cloth upholstery; a 60/40 split-folding rear seat; power windows, locks and mirrors; cruise control; tilt-only steering wheel and a six-speaker CD stereo. Stepping up to the S gets you 16-inch alloy wheels, off-road tires, a driver seat with adjustable height and lumbar, a first aid kit and a cargo organization system. Four-wheel-drive S models also get a roof rack with crossbars and a gear basket. The Pro-4X adds a number of off-road-ready features including an electronic locking rear differential, hill-start assist, hill-descent control, skid plates and unique 16-inch alloy wheels with upgraded off-road tires, plus foglights and roof-mounted off-road driving lights. Inside upgrades include distinctive cloth upholstery, a fold-flat front passenger seat, a leather-wrapped steering wheel, white-face gauges, an auto-dimming rearview mirror (with built-in compass), Bluetooth and a nine-speaker Rockford Fosgate sound system with a six-CD changer, auxiliary audio input jack, steering-wheel audio controls and satellite radio (automatic transmission models only). The Pro-4X Leather package adds leather upholstery and a passenger seatback map pocket, but deletes the flat-folding front passenger seat. The 2012 Nissan Xterra is equipped with antilock disc brakes, stability control, front-seat side airbags and side curtain airbags.