i bought a new 2012 gl450 end of august 2012. i was in an accident on jan 14th 2013. took the car to the liberty mutual authorised body shop here in town on the same day. it's been 11 weeks now and i'm still waiting on my car. reason- i have been told since early feb that they are waiting on the bumper. have called mercedes customer service several times, have a case manager there who updates me. first i was told that 60 bumpers were on back order, then a few days later i was told that 34 are still on back order. frustrating beyond belief. i don't think i will ever trust this car maker again.