The more you drive your car, the less carbon build-up in the engine. The computer can read driving habits and monitor the necessity for maintenence. Thus, the need for service will depend on if you drive to and from work (5 miles) a day, or if you beat your car and drive everywhere (40+).
I drive at least 40 miles a day and have 11000 miles and no service has been needed so far. But, I expect t do so soon. A friend who rarely drives his car had his first service done at 7000 miles.
Hope this helps with any questions. This is just from my experience with the car and my friend who is a tech and crossfire trained at a 5 star Chrysler dealer.