The BRABUS WIDESTAR version with its elegantly contoured fender flares adds six centimeters (2.4 inches) to the width of the GL 63 Biturbo. The WIDESTAR front apron was shaped in the wind tunnel to reduce aerodynamic lift on the front axle thus maximizing directional stability at high speed. Generously sized air inlets provide the engine and the front brakes with as much cooling air as possible. For further increased active safety the BRABUS front features LED daytime running lights and four auxiliary headlamps.

BRABUS rocker panels create an aerodynamically smooth transition between the fender flares on front and rear axle. Integrated entrance lights facilitate entering and exiting the vehicle in the dark.

The vehicle’s aerodynamics are further optimized by a roof spoiler and the BRABUS rear apron with integrated diffuser. The apron is custom-tailored to fit the wider fenders and in addition to cutouts for the tailpipes of the BRABUS stainless-steel quad sport exhaust system features integrated underfloor lights.