The xB is powered by a 158-hp 2.4-liter four-cylinder engine, mated to a five-speed manual transmission. A four-speed automatic transmission with manual shift mode is optional, and both gearboxes are controlled through a high-mounted shifter, which falls easily into the driver's hand. Every xB is equipped with 16-inch wheels, air conditioning, power mirrors and windows, power door locks with remote keyless entry, a satellite-compatible 160-watt Pioneer audio system with MP3 capability, and an auxiliary audio input jack for portable music devices; a rear liftgate provides access to a generous cargo area with approximately 70 cubic feet of capacity. Safety features include a vehicle stability control system with traction control, four-wheel anti-lock disc brakes with brake assist, a tire pressure monitor, and dual front, front side-impact and overhead curtain airbags. The Scion xB carries over with minimal changes for 2010. A new standard Pioneer audio head unit with USB connectivity (including iPod and iPhone) and a subwoofer RCA output adds value, while the Sizzling Crimson Mica exterior color replaces the previous model year's Blackberry Crush Metallic. Additionally, a new Release Series 7.0 version joins the lineup, featuring a distinctive body kit, TRD sport muffler and lowering springs, unique seat upholstery and an exclusive exterior paint color.