10 most optional extras on a luxury car

Mercedes-Benz Interior Assistant

We first experienced Mercedes-Benz Interior Assistant tech on the GLE launch in late 2018. It allows you to, among other things, control various elements of the car's infotainment system and interior with just a simple hand gesture, saving time and keeping your eyes on the road. At first, it sounded like a gimmick – and to some, it probably always will be. However, its purpose goes far beyond simply being a (better) version of BMW's gesture control.