I have so far been extremely luck that I only had one out of warranty repair that was $300 (coolant valve). Everything else was covered by warranty. I replaced the head lights myself which the Service center would have charged close to $1000 for or worse. But over all very little cost to keep the car running for 4 years and 152k miles. Once the normal wear and tear starts to come down, I will try to do as much as possible myself. YouTube is your friend. But frankly I'm worried. Tesla seems to have the attitude every Tesla owner is rich and will pay whatever repair will you throw at them. I'm also very concerned about Tesla being very proprietary with repairs and parts. You can't even replace a seat yourself because you would have to program it to the car and without the software the service center has, you are out of luck. Elon's words do sound pretty empty if you look at the facts. Kind of giving the finger to us early adopters.