: In "Options" -> "Units/Languages," hold L1 + R1 and press Up, Up, Up, Right, Right, Right, Up, Up, Right, Right, Up, Right, Start . 4. Quick Rewards & Unlockables What is the fastest way to make money in Gran Turismo 5?

: Use a high-performance car like the Ford GT (with racing soft tires) or a race-modded Corvette ZR1 . Payout : Roughly 117,000 Credits in under 4 minutes. Expert Series: Turbo Challenge Requirements : Reach Level 17. Strategy : Maximize your car's turbo kit.

: Export your GT5 save file to a USB drive . Use a PC-based Garage Editor to modify the credit values on the save file, then import it back to your PS3. 3. Secret Debug Menu (Advanced)

Grinding specific races is the most reliable way to earn money, especially since official seasonal events (which offered massive bonuses) have been discontinued. Requirements : Reach Level 23.

: Earn approximately 36,000 Credits every 5 minutes (including loading). Endurance Races (B-Spec)