Most playable characters in a kart racing videogame

Most playable characters in a kart racing videogame
Who
Mario Kart 8 Deluxe
What
42 total number
Where
Not Applicable ()
When

Mario Kart 8 Deluxe (Nintendo, 2017) rolled in for the Nintendo Switch with 42 playable characters right from the start. They included all the unlockable racers from the original Wii U version, plus new competitors from Nintendo's Splatoon franchise and a few from Mario's past.