The Mercedes GLC 200 4MATIC 184hp (2015 - 2019) produces 184bhp and 300Nm in standard form. Our Stage 1 ECU tuning file raises output to 230bhp and 420Nm, a gain of 46bhp and 120Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.