The Sentra is offered in four models this year: the XE, GXE, SE, and the limited production Sentra CA (Clean Air). This last model is certified in California as a Super Ultra Low Emissions Vehicle (SULEV). All Sentras include dual airbags, front and rear crumple zones, and child safety seat anchors. The XE, GXE, and CA models are powered by a 1.8L four-cylinder engine, while the SE comes standard with a 145-hp, DOHC 2.0L four-cylinder. A four-speed automatic transmission, which is standard on the CA model, is available at an extra cost on all other models. Two new exterior colors are available for this year: Inferno and Out of the Blue. Optional features include a power sunroof, a 6-disc in-dash CD changer, and side-impact airbags.