Doing a quick google search, it looks like Lemon Law in Utah is similar to some other states. The info I found looks like this:
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Here is an explanation of the Utah lemon law and how you can be protected if you purchase a car with expensive issues.
freedomgeneral.com
In Utah, a vehicle must meet the following qualifications to be considered a lemon and for the dealer that sold it to be forced to either replace it or offer a cash refund.
- The vehicle must be new. Lemon laws in Utah don’t apply to used vehicles. If you bought your vehicle used from either a dealer or a private seller, it doesn’t fall under lemon law.
- The vehicle must have been purchased in the state of Utah to qualify under Utah’s lemon laws.
- The vehicle must have been sold with an accompanying warranty.
- The vehicle must have been taken back to the manufacturer four times or more to address the same defect, or it must have been out of commission for thirty days or more.
- The vehicle must meet all of the above conditions within its first year or within its warranty period, whichever is sooner
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A couple important things about lemon law that I have read before (im not a lawyer though so definitely might be worth it consulting one)
1. Check your receipts from tesla (I would personally print them out, and not have only electronic). You want to be able to show that the car is going in for the same issue, or, alternatively, if it has been in service 30 days or more (DAVIS days its normally called at least in CA... "(DA)ys (V)ehicle (I)n (S)ervice).
2. In CA, if the issue is a safety one, I dont think it requires providing the dealer 4 times to fix. I "think" its 2 times but I am not 100% on that. You might want to see if Utah has a similar "safety" concern stipulation.
3. Hold any "Im gonna lemon this car" talk with tesla specifically until you know thats what you want to do. If you decide you want to go down that road, they will likely stop being cooperative, etc. They will clam up, and likely start shunting you off to legal or something. Make sure you have everything out of them you want from an information standpoint (receipts etc) before going down that road.
4. Suggest engaging a lemon law lawyer specific to your state that might be able to advise you on what your legal options are, and steps to take etc.
If it were me, given what you have gone through so far, I would likely be attempting to lemon the car or seeing if tesla would buy it back as I dont think I would trust it again. I would probably ask them about buy back first (as thats not the same thing as a lemon law complaint as its not compulsory), but if they were not willing to move forward with that, I would start getting my information together and pursue lemon law for that car.
Sounds like a horrible situation, I wish you the best in getting it resolved.