The Mercedes-AMG GT-S looks quite unimpressive compared to other sports cars. It is above all the inner values, with which the GT-S shows off. Especially if our stage 3 performance upgrade is used, which consists of our "mc680" turbocharger upgrade, software optimization and mcpipes downpipe with 200 CPSI catalyst. With these changes, the double-charged V8 engine delivers impressive 680 hp and 800 Nm. As a reminder, the stock power of the GT-S of the first generation is 510 hp and 650 Nm.