The point is in my earlier post: Yes, they did not specify any limit of the degradation, and they could not without adding a limit on the warranted miles and adding usage disclaimers - like "not charge to 100% more often then X times" and/or a lot of other detailed specifications. But that does not say that they will not honor a clam for warranty battery fix if the car has less then say 70% rest capacity within the warranty period and with a normal usage pattern. There is examples on this forum of Model S owners with more then 100k miles in less then 2 years if I remember correct. So I think you underestimate how far a car can be driven in 8 years. Anyway - that was not the point, the point was that it would always be exceptions from what we will call "normal usage" that Tesla has to consider when writing their legal warranty statements. And that is in my opinion the reason they have not specified any specific degree of degradations in it's warranty.