All models come with a full complement of convenience features, including air conditioning, a six-speaker sound system with a CD player, power locks and windows, and a power moonroof that opens above the roof so it doesn't take up headroom. Leather upholstery is standard on the GS and GS-R models, and all Integra sedans have a one-piece rear seatback that folds for additional cargo space., , Two 1.8-liter four-cylinder engines are available in the Integra. LS and GS models use a 140-horsepower version that teams with either a manual or automatic transmission. The GS-R model has a 170-horsepower engine with variable-valve technology and comes only with a five-speed manual transmission. This year, both engines have platinum-tipped spark plugs Acura says last 100,000 miles.