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Mercedes have been doing these massive light up grilles for a long time, called Mercedes-Benz Illuminated Star. They even sold official retrofit kits.

>The Mercedes-Benz illuminated star doesn’t not come standard on Mercedes-Benz vehicles, but it is an available accessory that you can easily get installed. It is also available in on some models when you opt for the Sport Package. This package gives you the option of an illuminated star on the front grille. It can also be added as a stand-alone option and can be installed on any Mercedes-Benz vehicle that was produced after 2013, unless the model is equipped with DISTRONIC® or DISTRONIC PLUS® driver assistance. This is because the front grille space is needed for the system’s cameras and radars.