The 2012 Mercedes-Benz SLS AMG Roadster is added to the SLS lineup. The Roadster characteristics the identical 6.3-liter 563-horsepower V8 motor as the SLS AMG Coupe. It is mated to a 7-speed manual transmission with overdrive that achieves 14 mpg city/20 mpg main road and can sprint to 60 mph in 3.7 seconds. A power soft-top comes in alternative of three colors and opens/closes in 11 seconds (up to 30 mph).