Fixing Save Glitch
If you are having trouble with a saved game, please try this method, which requires a memory card.
1. Go to the Xbox dashboard (open the tray) and copy your Apex files to the
memory-card (savegame and setup)
2. Delete the files on the xbox
3. Reboot the xbox without a disc
4. Copy the files back to the xbox
5. Apex should work now

Easy research points:
The easiest way to get research points is to do the champion track races repeatedly. They are the fastest way to win research points.
Easy win:
After a race starts on the easiest level, get yourself into second place. Then, do anything to block the rest of the field behind you until the leader gets a very big lead. Catching up to him will be easy for you, but the rest of the field will continue to lag behind. You should be able to get a win, but you have a guaranteed second place if not.
Recommended car manufacturing order:
The best cars to make are (in order), a roadster then one of each car after that.
Arcade Cheats
Enter the following brand name in Dream Mode to unlock the following goodies:

WORLD - All tracks and circuits (Arcade mode)
DREAMY - All concept cars (Arcade mode)
REALITY - All production cars (Arcade mode)