The base Impreza model features a 170-hp 2.5-liter four-cylinder engine with a standard five-speed manual transmission or an optional four-speed automatic. The new GT trim features a turbocharged version producing 224-hp. WRX models have 265-hp under the hood. All Impreza's are all-wheel drive and can be had either as a hatchback or sedan. Safety features such as six airbags, four-wheel anti-lock disc brakes with brake assist, traction-control and stability-control are standard A new GT trim and a bump in power for the WRX are the most notable additions to the 2009 Impreza line-up.