I have a 2018 Ti Sport with 80k+ miles, it has had the auto start/stop disabler installed since 15k miles and it is always in disable mode. (that is one of the dumbest things put in the car) All service and oil changes done by the same dealer. I have had multiple solenoid replacements and the oil pump/oil cooler was replaced when it dumped on my garage floor around 45k. The latest replacement part on order is the oil separator from what I have been told and they think this may be the root cause of the oil usage I have been complaining about since 20k miles. I used to have the oil changed every 9-10k, I have since dropped to every 5k in hopes of having less issues.