Star Ranks are a classification on how skilled a player is on Mario Kart: Super Circuit, Mario Kart DS, Mario Kart Wii, Mario Kart 7, and Mario Kart 8. The player earns them for Grand Prix and Mission Mode. There are three variations of star ranks. There's 1-star rank, 2-star rank, and 3-star rank, 3-star being the hardest to earn. To get the 1-star rank, the player needs to get 36 points or higher (54 or higher in later games). To get the 2-star rank, the player needs to get 38 points or higher (57 or higher in later games). To get the 3-star rank, the player needs to get a maximum of 40 points (60 in later games).
- Wii version explanation (should probably also mostly apply to DS version): http://www.gamefaqs.com/boards/942008-mario-kart-wii/43533083