Interior motion sensor for the alarm was causing false alarms starting around 60 miles, basically the day after driving it home from the dealer. Originally the part was supposed to be waiting when I dropped off the car. Ten days later it still hadn't arrived so they deactivated the motion sensor and I picked up the car. When the part eventually arrived, it was about a 90 minute wait to get it swapped out. No problems now for 10 days anyway. Giving them the benefit of the doubt about not knowing they couldn't get the replacement part before I dropped it off, they get a "B." If they actually knew about the part problem, an "F."