To be fair, the new Mercedes-Benz C63 AMG Coupe Black Edition is nothing but a slow car. It is the fastest in the C63 series, but VÄTH suspected some buyers to be dissatisfied with the factory 510hp power output. The German tuning house optimized the performance even more by adding on aftermarket supercharger, high flow custom exhaust system, and wired in a newly mapped computer. As a result, this modified version pumps out 746hp with a top speed of 218mph and a quarter mile time of 3.6 seconds. VÄTH also recommends upgrading its suspension and putting on larger 20-inch wheels to accommodate for the power increase.