The question is the following: -I bought the my Tesla Model 3 SR+ back in june 2019, it has around 20,000 km now (13,000 miles) -Back when I bought it, the displayed range was 380km, as advertised by Tesla at the moment of purchase -Later, as it can be seen on the Tesla site nowadays, the EPA range was augmented to 402km. As far as I know no hardware changes (i.e. battery or motor) changes were made to the production line, it was just a change on the displayed value in the car, and the value used for advertisement purposes. So I think my car is rated for 402km autonomy. -My car battery diplayed range, after 20,000 km, goes around 360km, but it's quite erratic (see green line below, as presented by TeslaMate, that records the value provided by the car API over time) Assuming the range calculated by the car is correct: -if I consider 380km as the theoretical battery maximum, I have lost about 5-6% of capacity -If I consider 402km as the theoretical battery maximum, I have lost 10-11% of capacity So which one is true? because warranty kicks in at 30% degradation, this value is important to know. As you can see on the crazy graphic, I had one episode of the car reporting 280km capacity, which is, depending on the maximum we consider, already out of warranty (70% would be 266km for a max capacity of 380km, and 281km for a maximum capacity of 402km) I had a chat with Tesla online support. Then, unhappy with the (lack) of information, They had no idea which value was the one to take in consideration for warranty purposes. I opened a service center appointment, and SC just called back. Technician told me the car logs show no problems. When asked if this level of degradation is ok, he said yes, but couldn't provide figures in terms of the normal expected degradation after 20,000km. Still no info on warranty threshold calculation either. SC person should get back to me when/if they find out the answer. Do you know the answer? Is my car battery warranty 70% of 380km or 70% of 402km?