Top Gear Overdrive
Bonus Track
Beat the sixth season (placing fourth or better) in Championship Mode to unlock and race on the Space Truckin track.

Alternate Credits
Using the same system as explained below, enter the following combination to access alternate credits: Alt. Credits: 2, 2, 0, 1.
 Bonus Track
 Alternate Credits
 Car Prices
 Open Seasons
 Bonus Car Mode
 Open All Cars
 Open Normal Cars
 Secret Cars
Car Prices
VW Beetle: $18,000
Eclipse: $18,000
Jeep: $30,000
Camero: $55,000
Viper: $96,000
Hummer: $145,000
Porshe: $185,000
Ferrari: $240,000
JP: $290,000
Mclairen: $350,000

Open Seasons
To enter the cheats go to the main menu screen. There are four options (Championship, Versus, Setup, Credits). Imagine these options are numbered 0 to 3. Input the following sequence (by pressing the Z trigger) while positioning the menu cursor (via Control Stick) at the appropriate menu items. If you mess up you can enter a menu item and return to the main menu to reset.
Open Season 4: 1, 0, 0, 3, 2, 2, 0
Open Season 5: 2, 0, 3, 1, 1, 2, 0, 1, 3, 0
Open Season 6: 3, 2, 1, 0, 0, 3, 0, 1, 2, 0, 3, 2, 2

Bonus Car Mode
To enter the cheats go to the main menu screen. There are four options (Championship, Versus, Setup, Credits). Imagine these options are numbered 0 to 3. Input the following sequence (by pressing the Z trigger) while positioning the menu cursor (via Control Stick) at the appropriate menu items. If you mess up you can enter a menu item and return to the main menu to reset.
Open Bonus Car 1: 3, 1, 2, 0, 1, 1
Open Bonus Car 2: 0, 3, 1, 2, 1, 0, 2, 3
Open Bonus Car 3: 1, 1, 0, 3, 0, 1, 0, 3, 2, 1, 2

Open All Cars
To enter the cheats go to the main menu screen. There are four options (Championship, Versus, Setup, Credits). Imagine these options are numbered 0 to 3. Input the following sequence (by pressing the Z trigger) while positioning the menu cursor (via Control Stick) at the appropriate menu items. If you mess up you can enter a menu item and return to the main menu to reset.
Open All Cars: 3, 3, 1, 3, 2, 0, 0, 0, 1.
You should get a smiley face and a rev sound if you do it right.

Open Normal Cars
To enter the cheats go to the main menu screen. There are four options (Championship, Versus, Setup, Credits). Imagine these options are numbered 0 to 3. Input the following sequence (by pressing the Z trigger) while positioning the menu cursor (via Control Stick) at the appropriate menu items. If you mess up you can enter a menu item and return to the main menu to reset.
Open Normal Cars: 3, 0, 0, 1

Secret Cars
Top Gear Overdrive features several bonus cars which can be unlocked by advancing through the season:
The Weinermobile
Nintendo Power Concept Car
The N-Logo
Taco
Museum Artifact
Circuit Cart with donkees
Credit Goes To: IGN 64