I don't have answers to your specific questions, but since no one else has replied I thought I would. Which is to say that I bought a 2015 FFH SE new and then six months ago (after my insurance company totaled my 2015), bought a used 2017 FFH SE. 100K miles on the 2015 and 60K miles on the 2017.Almost no problems (none serious) with the 2015 and none at all with the 2017. Both with the luxury package (leather seats) and tech package (large center screen).