 I have had this vehicle for 5 weeks now and love it overall.I purchased a 2011 Quest leftover that had 15 miles on it.However, I just had a new battery installed by the dealership (covered by warranty) since it kept refusing to start.We thought my kids had left light on or one of the doors was left open (kinda hard to believe since we always use the buttons to open/close). Long story short, two people my husband works with bought new 2011 Quests and said it was a bad battery.Sure enough, brought it to the dealership and the battery was bad. This seems to be a pretty common problem with this vehicle.Hopefully no more surprises.