Attached is a pdf from Tesla that shows the different services performed annually (years 1-5) under the annual service contract, whether pre-paid or not. I hope it provides information that helps you decide whether to buy the pre-paid service plan or not. EDIT: Tesla has asked me to remove this pdf since it is no longer accurate. While I believe this pdf should remain to show what the Annual Checklist was at one time, I have been informed that this list is no longer accurate. To find out what is currently included in your Model S Annual Checklist, please check with your Tesla Service Center.