The 2010 Smart fortwo undercuts its economy car rivals by a single cylinder under the hood, which helps it to deliver better than average for its class. The vehicle's 1.0-liter, three-cylinder engine generates 70 horsepower and 68 lb-ft of torque and is rated at 33-mpg in city driving and 41-mpg on the highway. The fortwo's output is managed through a unique five-speed "automated manual" transmission that can be shifted through steering wheel-mounted paddle shifters on certain models, adding an air of sportiness to the fortwo's thrifty performance. Despite its lack of grunt, the Smart fortwo's low curb weight helps out with acceleration. That being said, don't expect sports car performance - merely reasonably peppy runs from one stoplight to the next.