1. Buy or win a car with expensive parts, Saleen S7 or the ME Four-Twelve and find a part that's worth a lot that has multiple levels, e.g. the Saleen's turbo.

2. For example, I'll use the Saleen S7. Go to the Saleen's turbo option and purchase the first level turbo, not the stock one, the first level.

3. Now once you have purchased this part, highlight it (hover over it) and quickly press the right trigger and X at the same time.

4. It should say "Do you want to sell Sport turbo for 0 Credits?", press A and you should get the money for the Race turbo.

5. Do this continually as many times as you want, you do not need to repurchase the sport turbo because it is actually selling the race turbo, even though you don't have it.

6. With enough patience you should accumulate around 10,000,000 cr in about 20 minutes, SIMPLE!

Cars with expensive parts:
- ME Four-Twelve (Weight Reduction)
- Saleen S7 (Turbo)
- Any R level car (1,2 or 3) (Weight Reduction)
- Speed 12 (Weight Reduction)
- Many cars that have been won have expensive parts...