BRABUS GmbH, founded 1977 in Bottrop (Ruhr Area), Germany, is a high-performance aftermarket tuning company which specializes in Mercedes-Benz, Smart, Tesla and Maybach vehicles. Brabus became the largest Mercedes tuner, other than Mercedes-AMG which became a DaimlerChrysler affiliate in the 1990s. Using only the above description and what you know about the world, "Brabus GmbH was the largest German tuner in the 1990s." is definitely correct, incorrect, or inconclusive? 