Rating:

2008-12-27
Cheat Codes/Unlockables

How to get extra credits and licenses: Have a saved game from Gran Turismo 3 or Gran Turismo 4 Prologue to start with extra credits and some of your previously earned licenses.
How to get easy cash: After transferring your licensees and credits from Gran Turismo 3, buy the Dodge Viper GTS and soupe it up. Then, go to the Special Event races and compete in the Capri Rally Easy. After you win both races, you are awarded with a rally car worth 236,000 credits. Go back to the Capri Rally and compete in it again. You will be given the Same Rally Car. Sell one, and you will have 236,000 credits.
How to get easy money: Buy a decent car like an Evolution (must be of Japanese make) and upgrade it as much as possible. Then, go to Japan and compete in the All Japan race. Each gold awards you 7,500 credits (five races), and all golds gives you 35,000 credits. You will win a 350Z race car at the end. get In the new 350Z and upgrade if desired. Then, compete in the All Japan race repeatedly. Each time you get all golds, you will get another 350Z that can be sold for over 318,000 credits.
How to get extra horsepower: Give your brand new car an oil change immediately when you get it (before driving it). It will usually gain between 5 to 30 hp.
How to get license test help: Press R3 during the countdown in a license test to display blue (acceleration) and red (braking) guides on your route.

UNLOCKING HINTS
How to unlock the Dome Zero 78: To get this you need to get all Gold ranks in the International A License test.
How to unlock the Ford Model T Tourer 15: To get this you need to get all Gold ranks in the Super License test.
How to unlock the Honda Dualnote 01: To get this you need to get all Silver ranks in the Domestic A License test.
How to unlock the Honda S500 63: To get this you need to get all Gold ranks in the Domestic B License test.
How to unlock the Jensen Healey Interceptor Mk.III 74: To get this you need to get all Gold ranks in the International B License test.
How to unlock the Mazda Kusabi 03: Get all Silver ranks in the Domestic B License test.
How to unlock the Mazda RX-8 Concept (Type-II) 04: To get this you need to get all Silver ranks in the International B License test.
How to unlock the Mercury Cougar XR-7 67: To get this you need to successfully complete the Super License test.
How to unlock the Nike One 2022: To get this you need to successfully complete the International B License test.
How to unlock the Nismo 270R 94 (S14): To get this you need to successfully complete the International A License test.
How to unlock the Nissan GT-R Concept 01: To get this you need to get all Silver ranks in the International A License test.
How to unlock the Nissan Skyline GT-R 01: To get this you need to get all Gold ranks in the Domestic A License test.
How to unlock the Pontiac Solstice Coupe Concept 02: To get this you need to get all Silver ranks in the Super License test.
How to unlock the Pontiac Sunfire GXP Concept 02: To get this you need to successfully complete the Domestic A License test.
How to unlock the Volkswagen Lupo 1.4 02: To get this you need to successfully complete the Domestic B License test.

HOW TO UNLOCK NEW CARS AND TRACKS
One: To unlock cars and tracks, compete in the GT Career mode. You can earn money there to upgrade your cars, and buy or sell new and used ones.
Two: At the places where you can buy your cars (for example, BMW), you can find races that use a certain model of that dealer. This will unlock some of the bonus cars you cannot normally buy or win in a race. The cars that you get are very fast, and you can sell them for a decent price.
Three: You can win different cars from series races that you have already completed. For some series, you are given the option if you would like to clear your current records. If you do this, you can race those courses over again to win another prize car.

Rating:

2007-05-03
Cheat Codes/Unlockables

if you put Forza for your name you will have all the money you can get

Rating:

2007-03-31
Cheat Codes/Unlockables

this is for new GT4 owners. if you never,ever heard of the 1963 daihatsu midget, well here it is. you can unlock it in the midget II race. first, buy a daihatsu midget II D-type for 3,056 or so at used car showroom II. then go to GT auto and go to oil change. if it's brownish, press change oil. this will raise your HP. if not,no. either way, exit GT Auto and press R1 to go to japan. press x. go to daihatsu and go to the icon that says DRS. and fit with this. 1. stage 1 turbo kit 2. sports muffler. then exit the DRS tuning store and select one-make races. go to midget II race. press the left icon. press B-spec mode or the headphones as you will not be in the race. you are the director, not the driver. go to "push"then press triangle to overtake. now watch the race for 4 laps. you should be in first place in the second lap. you win, then the daihatsu midget '63 will be the prize car. it has 3 wheels and 11HP!!! TOP SPEED: 51 miles. yup, 51 miles.

Rating:

2007-02-21
Cheat Codes/Unlockables

on special condidtions there is a car you can win on the second challenge which is a toyota dirt rally car.you can sell this car for over 450,000 if you win it.so if you did this race over and over you would become a MILLIONARE!!!!!!!

Rating:

2005-12-25
Cheat Codes/Unlockables

big bucks this is the cheat name to unlock all cars