The xB is powered by 2.4-liter 158-hp four-cylinder engine that is mated to a five-speed manual or optional four-speed automatic transmission. Both transmissions are controlled through a high-mounted shifter, which easily falls into the drivers hand. Redesigned for 2008, the xB has a four-inch longer wheelbase than the old xB and is also three inches wider, while the overall length grows by a foot. Standard equipment includes 16-inch wheels, four-wheel anti-lock disc brakes with brake assist, vehicle stability control, and six-standard air bags. For 2008, the redesigned Scion xB is now built off the Corolla platform, and utilizes a more powerful 2.4-liter engine.