Cheats for Gran Turismo 5 for PS3

Get an online PSN connection for this exploit and create a NEW account and sign into the PlayStation Network. When you set up your account, set up your birth date for the current calendar date. You will be awarded a car on the MM/DD of your "birthday," and the year actually determines what sort of car you will get (so set it to whatever year you want a random car from). Enter GT Mode to receive your online B-day reward/coupon for your free car. Give the free car to your actual account as a gift. You can repeat this endlessly for free cars! Note: They may patch this in a post-release update, so try it quickly!

The Formula GT car sometimes shows up in the Used Car Dealership, but it is only there randomly - not all the time. The cars for sale at the UCD are changed every single day (game time - not real time). With every "day" that passes, six new vehicles show up in the UCD. A day passes when you complete a race or finish a license test. However, you can go through days quickest by loading up a license test and skipping to the next test, without ever actually racing the test. As long as the load screen shows up between tests, one day has passed. It takes five game days to completely refresh the Used Car Dealership's current stock, giving you another chance to find the Formula GT car.

Because the Used Car Dealership inventory refreshes after each day, you can skip through days quickly to find the car you want (including the Formula GT car). To skip a day quickly, you can go to a license test, then skip the next test without actually racing in the test (as long as the screen show up between the tests). That way you can recycle the UCD's whole inventory in a few days and check for the Formula GT car.

At the main menu of the game where you can select between GT Mode and Arcade Mode, press Circle to start a demo video. It will show a random car then a ramdom race replay. If you do this enough times you see a Corvette C7 Prototype. Its covered in body camo but it has a liscense plat that says CORVETTE. Its not available in game but it could be a teaser as to a future DLC.

Endurance: Complete the Endurance series of Race event
Red Bull X1 Challenge: Complete Red Bull X1 Challenge special event
Watch Falling Objects: Intentionally make a part of your car fall off while driving. This is done alot easier with the rally cars where the doors come of alot easier.
Rollover: Rollover a car by flipping a car totally. Done by driving on trial mountain and hitting the S curve before the starts finish line in a fast car
Honda: Take a picture of Honda at Honda head office in Tokyo on R246 track. Take a photo of any honda car driving past the building on your left hand side at the end of the pit exit.
Picture Exclusive: Take a picture of someone special as he stands in Kyoto's Gion district. There is a guy standing on the left on the bridge zoom onto his face and use Auto Focus,when he turns and looks at you take a pic and you will recieve this trophy.
Portraitist: Take a picture of a solitary lady. This is on the second photo location. There is a lady sitting on a bench with a cellphone zoom onto her face use auto focus and when you have a clear shot take the picture and you recive this trophy.
Grand Finale: Reach the long version of the ending movie

When you're racing against a Lotus Esprit, sometimes the driver is listed as "J. Bond". He drove a red Esprit in the movie "For Your Eyes Only."

Get to Level 14, get into a "Fully Juiced" GT-R SpecV'09, go to Professional Series, enter GRAN TURISMO WORLD CHAMPIONSHIP and then enter the CIRCUIT DELA SARTHE 2009. Finish 1st and get 18, 400 Cr. And get rewarded with 2700+ Level points. (Set "Top Speed" setting @ 420; use Racing Tires (Soft, Med. Or Hard) Continue to come in 1st, and increase your Levels faster!

Collect tickets, and then you can redeem them for free cars.