The 2011 Dodge Caliber is a compact car that is available in four trims: Express, Mainstreet, Heat, and Uptown. The base Express trim comes with a 2.0L four-cylinder engine that generates 158 horsepower, while optional is a 2.4L engine delivering 172 horsepower. A five-speed manual transmission is standard, but a continuously variable transmission (CVT) is optional. All models are front-wheel drive. Interior features include an optional music storage system, nine-speaker premium sound system, and flip-down rear speakers. Safety features include side and side curtain airbags, anti-lock brakes, and stability control. The Caliber underwent minimal changes for its 2011 model year.