Base models come nicely equipped with 17-inch alloy wheels, keyless entry, full power accessories, dual-zone automatic climate control, cloth upholstery, a power driver seat and partial-power front passenger seat, split-folding rear seatbacks, a tilt-and-telescoping steering wheel with audio controls, cruise control, OnStar, Bluetooth, and a seven-speaker sound system with a CD player, satellite radio, an auxiliary audio jack and an iPod/USB audio interface. Next step up would be the Convenience model (1SD), which adds a power lumbar adjustment for the driver seat, an auto-dimming rearview mirror and remote ignition. Spring for the Leather model and you get foglamps, heated mirrors with built-in turn signal repeaters, leather upholstery, heated front seats and a full power front passenger seat. The Premium 1 version adds rear parking assist, an auto-dimming driver-side mirror and driver seat memory settings. The Premium 2 (1SP) ups the ante with the 3.6-liter V6, keyless ignition/entry, perforated leather upholstery, heated and ventilated front seats, a heated leather- and wood-trimmed steering wheel and a power rear window sunshade. A Premium 3 model includes 18-inch chromed alloy wheels, a sport-tuned suspension, a 120-volt household-style power outlet and an 11-speaker Harman Kardon surround-sound audio system. Rounding things out is the top-of-the-line Touring model, which features 19-inch alloy wheels, an adaptive suspension, xenon headlights, a blind spot warning system, a rearview camera, a head-up display, digital music storage and a navigation system. The 2012 Buick LaCrosse's list of standard safety features includes antilock disc brakes with brake assist, stability and traction control, front-seat side-impact airbags, full-length side curtain airbags and the OnStar telematics system.