How do I enable or disable auto-accelerate and auto-brake?

Auto-accelerate
Auto-accelerate is enabled by default for Arrow Touch controls and cannot be disabled.

If you are playing on the Rookie or Professional difficulty settings, you can enable auto-acceleration for Tilt or Wheel Touch controls from the main Controls menu.

Auto-brake
Auto-brake is enabled for all control methods when playing on the Rookie difficulty. To disable auto-brake, change your difficulty level to Professional or higher.