It seems to make a big difference whether or not you buy it from Google. I've seen lots of complaints from Nexus 6P owners who didn't being shoved off to Huawei and their terrible support. But I bought mine from Google, who twice offered me RMAs after the warranty period was over with no resistance. Most recently they replaced it with a new Pixel XL, instead (due to stock issues, I assume).
That being said, Google needs to improve their out-of-warranty repair/replacement options. I couldn't do anything for my Chromebook Pixel once the warranty ran out, and I wouldn't count on them to randomly add a de facto additional year to the warranty like they did with the 6P, which was probably done because of its terrible, widespread battery issues.
That being said, Google needs to improve their out-of-warranty repair/replacement options. I couldn't do anything for my Chromebook Pixel once the warranty ran out, and I wouldn't count on them to randomly add a de facto additional year to the warranty like they did with the 6P, which was probably done because of its terrible, widespread battery issues.