The 2012 Lexus RX 450h is a five-passenger midsize luxury SUV available in front- or all-wheel-drive versions. It comes in one well-appointed trim level. Standard features include 18-inch alloy wheels, foglights, auto-dimming mirrors, keyless ignition/entry, 10-way power front seats, a power tilt-and-telescoping steering wheel, dual-zone automatic climate control, cloth upholstery, wood interior trim, sliding and reclining second-row seats and a nine-speaker audio system with a six-disc CD changer, satellite radio and an auxiliary audio jack. Options are bundled in a number of packages. The Premium package adds leather seating, a sunroof, a power tailgate, driver-seat memory, a rear-seat armrest and an iPod interface. Additional option bundles require the Premium package. The Comfort package tacks on adaptive xenon headlights with automatic high beams, rain-sensing wipers, heated/ventilated front seats and an upgraded 12-speaker audio system. Powering the 2012 Lexus RX 450h is a combination of a 3.5-liter gasoline V6 engine and electric motors. Front-wheel-drive models use two motors: one acting as a starter/generator and the other providing propulsion. The all-wheel-drive version adds a third electric motor to drive the rear wheels. Total output amounts to 295 hp that is routed through a specialized continuously variable transmission (CVT)