I would give the SA hell about a decent rent a car. They should give you another X5 or the least X3 for a loaner anyway. I normally get Enterprise cars when my dealer performs warranty fix that takes more than 1 day but I demand for an upgrade. They will give me Lexus or Audi's. Complaint to the Service Director and if that doesn't work out, call the BMW toll free number 800 831 1117 and complaint to customer relations. Good luck.