The base model Challenger SE was initially powered by a SOHC V6 engine rated at (SAE) and of torque which was coupled to a 4-speed automatic transmission for the first half of 2009, and was then changed to have a standard 5-speed automatic transmission. Several different exterior colors, with either cloth or leather interiors became available. Standard features included air conditioning, power windows, locks, and mirrors; cruise control, and aluminum wheels. Leather upholstery, heated front seats, sunroof, 18-inch aluminum wheels, and a premium audio system are available as options, as are ABS, and stability and traction control. The Canadian market also sports the SXT trim, similar to the SE, but more generous in terms of standard features. Some of these features being ESP, an alarm system, and wheels. Starting with the 2012 model year, the SE was replaced in the U.S. with the SXT model.