Brakes bonus upgrade - Get over 7,500 points in the Pressure Tuning 2 mini-game to unlock the Brakes bonus upgrade.
Chassis bonus upgrade - Get over 5,000 points in the Pressure Tuning 1 mini-game to unlock the Chassis bonus upgrade.
Controls bonus upgrade - Get over 5,000 points in the Engine Tuning 3 mini-game to unlock the Controls bonus upgrade.
Drivetrain bonus upgrade - Get over 50 points in the Dyno Run1 mini-game to unlock the Drivetrain bonus upgrade.
Easy wins - The key to winning on any course or mode is to have a flawless race. Avoid traffic, cut corners, and drive straight at every opportunity. A tip is to check where you will be racing next and set up a custom free-race to emulate the race course; here you can check the feel of the course and find valuable shortcuts.
Engine bonus upgrade - Get over 100 points in the Nitrous Tuning 1 mini-game to unlock the Engine bonus upgrade.
Exhaust bonus upgrade - Get over 2,000 points in the Engine Tuning 1 mini-game to unlock the Exhaust bonus upgrade.
Nitrous bonus upgrade - Get over 175 points in the Nitrous Tuning 3 mini-game to unlock the Nitrous bonus upgrade.
Quick boost - If you crash your car in a race and you have a manual transmission, put it in neutral. Hit the gas all the way, then slam it into first gear to get a very quick boost.
Suspension bonus upgrade - Get over 100 points in the Dyno Run2 mini-game to unlock the Suspension bonus upgrade.
Turbo bonus upgrade - Get over 150 points in the Nitrous Tuning 2 mini-game to unlock the Turbo bonus upgrade.
Wheels bonus upgrade - Get over 4,000 points in the Engine Tuning 2 mini-game to unlock the Wheels bonus upgrade.