Gearhead Garage [cheats]
When you are in job mode, press [Insert] + [Home] + [Page Up]. The job will automatically finish, you get to keep your money, will get paid.
Information in this section was contributed by cherubim14.
To fix any and all repairable parts while they are still on the car without having to take them off, press [Delete] + [End] + [Page Down].
Take parts off people's cars then enable the "Free job" code. You will still have the parts under that car name and still get paid the full amount.
Do all the jobs you can. After it says that there are no more jobs, get a cheap car from the auction, fix it up, and try to get more than $20,000, which will get you to God-like mode.
Note: This does not work on high priced or third party cars. Buy an old or new junker from the auction. Do not repair this car. Just take and buy a new car door from the catalog. Put the door or whatever part on the car and auction it. This will generally make anywhere from $78 to $1,000 profit.
if there is a "_______.car" or "_______.spec" in your folder, you must remove it. This will cause the game to glitch and often only show a car with no parts. No one will bid on it, and it is easy to get for $125 but you must remove this file before playing the game.