For 2009 the Cobalt has a number of improvements. They include a revised 2.2-liter Ecotec engine delivering more power and better fuel economy, 15-inch low-rolling-resistance tires, a USB port added to the radio, standard OnStar and available Bluetooth phone connectivity, new 15- and 16-inch wheel options and a tire inflation kit as standard equipment. The Sport trim and 2.4-liter engine have been dropped.
Trim names change to LS, LT and Sport, while XM Satellite Radio, head-curtain airbags and a tire-pressure monitoring system are made standard across the line. SS and SS Supercharged models are temporarily off the order menu.