The Chevrolet HHR comes in a simple LS, 1LT and 2LT models. The LS comes standard with GM's solid 2.2-liter, double-overhead-cam four-cylinder Ecotec engine, making 143 horsepower; the 1LT offers an optional 2.4-liter version of that same engine rated at 172 horsepower; and the 2LT makes that powerplant standard. All three models come standard with a five-speed manual transmission; a four-speed automatic is optional and comes packaged with remote starting. The HHR is only two-wheel drive, with a mere 55.6 cubic feet of cargo space, but its unique design allows it to appeal to a specific buyer segment.The Chevrolet HHR is a carryover from 2006.