The front-wheel drive HS 250h is available in two trim levels: HS 250h and HS 250h Premium. It employs an advanced full hybrid powertrain technology that unites a 2.4-liter Atkinson-cycle four-cylinder gasoline engine with an electric drive motor, generating 184 combined horsepower. This hybrid system is mated to an Electronically controlled Continuously Variable Transmission (ECVT) with four selectable drive modes - Normal, ECO, Power and EV (electric only). The HS 250h features a power moonroof, 17-inch alloy wheels, Smart Access passive entry/start, leather upholstery, dual-zone automatic climate control, satellite radio, six-disc CD changer and a USB port, along with Bluetooth wireless connectivity and audio streaming. The HS 250h Premium is further outfitted with 18-inch alloy wheels, auto-dimming exterior mirrors, genuine wood trim, heated/ventilated front seats and a memory system for the driver's seat, outside mirrors and power steering column. Popular options include a navigation system, back-up monitor, LED headlamps and upgraded audio. Standard safety technologies include anti-lock brakes with brake assist, vehicle stability and traction control systems, a security alarm and tire pressure monitoring, as well as ten airbags and Lexus Safety Connect; additionally, hybrid-related components are backed by an 8 year/100,000 mile warranty. An available Technology Package includes innovative features such as a Driver Attention Monitor, Pre-Collision System, Intuitive Parking Assist, Heads-up Display and Lane Keep Assist. The Lexus HS 250h carries over unchanged for 2012.