Mercedes-Benz × Mario Kart 8
From the Super Mario Wiki
Mercedes-Benz × Mario Kart 8 is one of three downloadable content packs available for Mario Kart 8, the others being The Legend of Zelda × Mario Kart 8 and Animal Crossing × Mario Kart 8. It was released on August 27, 2014. Unlike the other two downloadable content packs, this pack can be downloaded for free. The kart pieces are part of the base content of Mario Kart 8 Deluxe with each part requiring Coins to be unlocked.
The Mercedes-Benz × Mario Kart 8 pack contains three new karts and one new set of tires, all of which are modeled after actual products manufactured by Mercedes-Benz. Unlike The Legend of Zelda × Mario Kart 8 and Animal Crossing × Mario Kart 8, no new playable characters, cups, courses, bikes, ATVs, or gliders are included in the pack. Unique to this pack is a small icon of the Mercedes-Benz logo that appears to the bottom right of each kart part image when the player is in the process of selecting kart parts before a race.