All models use a 2.2-liter flat (horizontally opposed) 4-cylinder engine with four-valve-per-cylinder heads. It provides 130 horsepower at 5600 rpm and 137 pound-feet of torque at 4400 rpm. The new Subaru engine can be paired with either a 5-speed manual or 4-speed automatic transmission. Models with the automatic feature a shift-lock system that requires that the brake be applied before shifting into drive or reverse. For 1991, Subaru added a turbocharged version of its 2.2-liter turbo 4-cylinder, for standard use in its new AWD Sport Sedan. The same engine also comes standard on the AWD Touring Wagon model, first introduced in 1993. It delivers 160 horsepower at 5600 rpm and 181 pound-feet of torque at 2800 rpm.