Saving fuel
Fuel should be used to get turbo boosts while having enough to complete the level. Plan your actions one step at a time, especially when you have to limit your turbo count. Search for boost pads that are reachable and run over them, however do not go too out of your way. If you find a chain of at least three boosts in a row, find a way to reach them.
Track layout
The track's curves can be misleading. Sometimes a blocker that appears that it will be in your way actually is not. When the track turns, pay attention to what exactly is in your path. Try to avoid sections of the track that are convex and curve downward, as this will prevent you from seeing upcoming obstacles and boosts. By remaining on track sections that are concave and curve upward to get the best view. The first lap should be used to strategize the best path. The speed of subsequent laps will force you to use reflexes.