Gadget Racers Cheats - PlayStation 2

Grand Prix Accelerate Level to your car (American version only)
Unlock in Top Menu Title Screen:

[L3], [L3], [R3], [R3], [Up], [Down], [Left], [Right] - Fastest Perfect Start Green Light & Strongest Perfect Boost Accelerate
[L1], [L1], [L2], [L2], [Left], [Left], [Right], [Right] - Have 8000 NA Engine, Angel Tires, 8-Speed AT, 3-aero Wheel, Alloy Frame Chassis, Ultra Quick Steering, 1000MHZ CPU & Exclusive Spoiler
[L1], [L2], [L1], [L2], [Left], [Up], [Right], [Down] - Have Angel Engine, Phoathom Tires, 10-Speed AT, 3-aero Wheel, Advance Alloy Frame Chassis, Alive Quick Steering, Angel CPU & Exclusive Spoiler
[Left], [Left], [Right], [Right], [L1], [L1], [R1], [R1] - Insane Difficulty, X80EMoney and Endurance On
[L1], [R1], [L2], [R2], [Left], [Right], [Left], [Right] - Unlock Professional Race, Heavyweight Race & HG Grand Prix
[L1], [R2], [L2], [R1], [Up], [Left], [Down], [Right] - Unlock Royal Race, Specialweight Race & Advance HG Royal Christmas Grand Prix
[R1], [R1], [R2], [R2], [Up], [Up], [Down], [Down] - Weight /10, Acceleration X2, Torque X6, Horsepower X2, Handling X9 All Tire Grip X88000000 Chassis & Tire Endurance X5000
[R2], [R2], [R2], [R2], [Up], [Up], [Down], [Down] - Weight /20, Acceleration X4, Torque X12, Horsepower X4, Handling X18 All Tire Grip X176000000 Chassis & Tire Endurance X10000
[R3], [R3], [R2], [R2], [Up], [Up], [Down], [Down] - Weight /30, Acceleration X6, Torque X18, Horsepower X6, Handling X27 All Tire Grip X264000000 Chassis & Tire Endurance X15000
[R2], [R2], [R3], [R3], [Up], [Up], [Down], [Down] - Weight /40, Acceleration X8, Torque X24, Horsepower X8, Handling X36 All Tire Grip X352000000 Chassis & Tire Endurance X20000
[R3], [R3], [R3], [R3], [Up], [Up], [Down], [Down] - Weight /50, Acceleration X10, Torque X30, Horsepower X10, Handling X45 All Tire Grip X440000000 Chassis & Tire Endurance X25000

Grand Prix Accelerate Level to your car (Japanese version only)
Unlock in Top Menu Title Screen:

[R1], [R1], [L1], [L1], [Left], [Right], [Left], [Right] - Difficult Difficulty, X64EMoney and Endurance On
[L1], [R2], [L2], [R1], [Right], [Right], [Left], [Left] - Fastest Perfect Start Green Light & Strongest Perfect Boost Accelerate
[R2], [L2], [R2], [L2], [Right], [Right], [Right], [Right] - Gain Money 1000000000000000G, all part and all event race (Savable)
[L1], [L2], [R1], [R2], [Left], [Left], [Right], [Right] - Weight /30, Acceleration X6, Torque X18, Horsepower X6, Handling X27 All Tire Grip X264000000 Chassis & Tire Endurance X15000

Faster time
While you are flying and your wings are about to retract, pause game play. The wings will retract while the game is paused, giving you a quicker landing and possibly a faster time.

If you brake while you are bouncing, you will stop bouncing faster, but may lose your stability momentarily.

Chicken car
When you play Super Chicken Race, race with wings equipped on your car (which can be any vehicle). When you play the Super Chicken Race, intentionally drive off the cliff after the goal. Your wings should activate, taking you to a remote island. On that island, you will find a chest. Run into the chest, and the race will end. You will not earn any money, but the game will present you with a Chicken car.

Drive faster in water
When you are riding in water and using an AT (automatic transmission), shift down one gear. You should go slightly faster. You have to watch the gear bar, because it will shift itself up again. Keep the gear steady and you can shave off a few more seconds.

Drive faster underwater
This trick is easy to do if you have a MT (manual transmission). If you are going underwater, shift it to third gear. It will speed up, due to it being a power gear like everything else.