Challenge mode presents the player with specific car and track combinations, and a set of rules for completion. Some challenges require getting from start to finish under a certain time limit, and others call for avoiding obstacles that will disqualify the player if they are touched. Players are graded by how fast they complete the challenges with bronze, silver, or gold medals. Fast completion times can unlock new cars for use in any of the other modes. Additionally, like Time Trial, the player can compete for best times locally and worldwide.