The Liberty is available in three trim levels, Sport, Renegade, and Limited. Both two-wheel drive or four-wheel drive systems are offered on the Sport and Limited trims, while the Renegade is equipped with four-wheel drive only. The standard powertrain in all Liberty models is a 210 hp 3.7-liter V6 and a four-speed automatic transmission. Standard equipment includes SIRIUS satellite radio, electronic stability control, anti-lock brakes with brake assist, all-speed traction control, and electronic roll mitigation. The SkySlider option is a full-length open canvas sunroof that can slide accordion-style forward, backward or partially opened to any position in-between. A multimedia infotainment system with 30-gigabyte hard drive and navigation system is available. The Jeep Liberty receives a new Renegade trim for 2010. Positioned between the Sport and Limited models, the Renegade features Select-Trac? II full-time, shift-on-the-fly, active four-wheel-drive system, in a unique rugged new design.