Car with the fastest acceleration - Buy a Saleen S7, then add all upgrades available to the car. It will now go from 0 to 60 mph in less than two seconds. When in a race, use NOS as soon as "Go" appears to drive even faster.
Easy money - Enter the Ultra Racing Cars contest and finish in first place. You will win a Lamborghini Murcielago. Then, go to your garage and sell it for $161,500. You can repeat this as many times as desired. Additionally, buy the Corvette for $45,000, then sell it for $45,500.
Easy win - To win easier in evolution mode, run all the tracks and memorize the turns in arcade free race.
Fastest car - Buy an Aston Martin, then add all upgrades available to the car. It will have a top speed of 249 mph.
Fill turbo bar quicker - Drive into various items on the roadside (for example, boxes, phone booths, and road signs).
Gamelati 1000 SS motorcycle - Win all the Road Challenges in arcade mode to unlock the Gamelati 1000 SS motorcycle.
Gameloft F1 - Win all Evolution Championships in first place to unlock the Gameloft F1.
Less traffic - To avoid the traffic, press Y and the cars will disappear. Note: This will not work if you are very close to the car. Do this when farther away. For example, just when going on a bridge press Y(4) and look. Most of the cars should be gone.
Quick start - To get a quick and easy lead over everybody, use your turbo as soon as the race starts. Turbo can be easily obtained simply by hitting objects (trash cans, benches, etc.).
Race bonuses - Win the following races to unlock the corresponding car or part:
Sharper turns - You may encounter some hard turns in the road. Hold Y for about three seconds and you will begin skidding around the corner. If you hit something, nitro-out of there.