Early Model S owners please be aware that Tesla created the Extended Service Agreement after we purchased our cars. We had an option to purchase the prepaid 8 year service agreement for annual inspections. The new agreement is under My Tesla under Service options. You have 30 days from four years of purchase or 50,000 miles whichever comes first. I post this, because I've talked to several early owners that were not aware of the option. The Tesla Service centers do not inform you about the Extended Service Agreement nor did Tesla send out any emails to owners as you approached the mileage. Tesla did make a blog post, but if you missed it you might miss an opportunity to have the Extended Service Agreement. I've been told they are working on an new program to inform owners, but if you go past the mileage or purchase date you can't purchase the Extended Service Agreement. My warranty ran out last year due to mileage at 50,000, but I had purchased the 8 year service agreement thinking that covered everything. I was sadly wrong and just paid for my first door handle replacement at $850.