The Mercedes C 220d (2.0D) 200hp (W206 - 2021 ->) produces 200bhp and 400Nm in standard form. Our Stage 1 ECU tuning file raises output to 250bhp and 440Nm, a gain of 50bhp and 40Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.