A new high-performance 2008 Chevrolet Cobalt SS model is the big news for the Cobalt, Chevrolet's family of front-wheel-drive compact sedans and coupes. Other Cobalt models return for 2008 with only minimal changes. Three trim levels are offered on the 2008 Chevrolet Cobalt: LS, LT, and Sport. The first two feature a 2.2-liter four-cylinder engine, which produces 148 horsepower. A 171-horsepower, 2.4-liter four is offered on Cobalt Sport models.