Impreza offers sedans, wagons, and an SUV-flavored wagon called the Outback Sport. Each has all-wheel drive and a horizontally opposed 4-cyl engine. Base-level sedans and wagons are 2.5i models. Like the Outback, they have 173 hp. WRX models are turbocharged. The WRX TR sedan and WRX Limited sedan and wagon have 224 hp. WRX STI and STI Limited sedans have 293 hp. Manual transmission is standard. Automatic transmission is available for 2.5i, Outback, and WRX Limited models. WRXs have a sport suspension, uprated brakes, functional hood scoop, and special seats and trim. The STI has further uprated suspension, brakes, and steering. ABS and front side airbags providing head and torso protection are standard on all Imprezas. Leather upholstery is exclusive to WRX and STI Limiteds, where it's standard.