Driver 3:
All Vehicles:
Press X(2), Y(2), L, R, L at the main menu. A sound and the option will be unlocked at the menu to confirm correct code entry.

All Missions:
Press X(2), Y(2), R(2), L at the main menu. A sound and the option will be unlocked at the menu to confirm correct code entry.

Immunity:
Press X, Y, R, R, L, L and Y at the main menu to unlock immunity. A sound will confirm that the code has been entered correctly, and the cheat will become available in the cheat menu.

Invincibility:
Press X, Y, L, R, L, R(2) at the main menu. A sound and the option will be unlocked at the menu to confirm correct code entry. This has no effect in undercover mode.

Unlimited Ammunition:
Press R(2), L(2), X, Y(2) at the main menu. A sound and the option will be unlocked at the menu to confirm correct code entry.

All Weapons:
Press L(2), X, Y(2), R(2) at the main menu. A sound and the option will be unlocked at the menu to confirm correct code entry.

18 Wheeler Havoc:
Kill all ten Timmy Vercellis in Miami. 
Go to the Miami armory to activate the '18 Wheeler Havoc' option.

Infinite Mass:
Kill all ten Timmy Vercellis in Istanbul. 
Go to the Istanbul armory to activate the 'Infinite Mass' option. 
Tanner's car or motorcycle can hit any other vehicle without stopping or being damaged in this mode.

Nice Hot Rod:
Enter the airport and follow the runway to the left. Open one of the red garage doors to find a Hot Rod.

Miami: Gt-40:
Begin at Tanner's house and look at the map. Go onto the first big bridge seen on the map. In the middle of that bridge, follow the first street to the right. Enter the garage at the end of that street to find a car that resembles a Ford GT-40.

Fugitive Mode:
Kill all ten Timmy Vercellis in Nice. 
Go to the Miami armory to activate the 'Fugitive Mode' option. 
All pedestrians have weapons in this mode.

Miami: Go-kart:
Drive to Coral Gables and find the Biltmore Hotel, located opposite the water tower. Look in behind the bushes in the backyard to find a bunker entrance. Drive through it then climb up the stairs. Kill Timmy Vercelli then activate the switch to open the gate below. Drive into the next area and through the long tunnel. Once you exit, drive directly ahead to the Go-Kart track. You can find a Go-Kart in the pit area. If it is not here, leave, then return later.