My wife and I were in Las Vegas on a trip with our 3 year old Mercedes-Benz Sprinter Based Motorhome (it's a Great West Legend SE, if that matters).
It was clear from conversations with our hometown MB Dealership that we needed a new EGR (Exhaust Gas Re-circulation) Valve. The symptoms (loss of power, clunking transmission) got so bad we felt it would be unsafe to drive home and feared we would be stranded in the middle of nowhere needing a tow, so we took it to Mercedes of Henderson to get it fixed.
Some Mercedes dealerships just don't like working on motorhomes because motorhomes usually have added stuff that makes the repairs difficult. Some dealerships don't like dealing with anyone but customers who purchased vehicles from them.
It became really clear after dealing with Mercedes-Benz of Henderson for a day that we were getting the run-around, and for whatever reason they just didn't want to work on our Mercedes, so we took our van back and decided to take the chance at driving it home to Seattle unrepaired (something we really didn't want to do).
If you are kind of stranded and are from out of town, I highly suggest that you try to find another dealership to get your repairs done. We got mistreated here. In addition to the run-around we were also lied to and our van had signs of being driven roughly on a test drive by one of their techs.
We've received sterling treatment at every other Mercedes Dealership we've patronized which made our experience at MB of Henderson all the worse by comparison.
In the day of dealing with them, we got nearly all of the experiences you can read in the negative feedbacks here, and virtually none of the positive--except that the place was clean and our service adviser was friendly.
We're sorry that we can't recommend this dealership for anything, except maybe for frustration.. I believe that they are affiliated with another Dealership "Fletcher Jones", so that one is out for us, too. (I think our initial call was to Fletcher-Jones and we got patched through to MB of Henderson.)
Just so we don't leave readers hanging: We did make it home without incident and the next week our local MB Dealership did the repair for less than 1/5th of the service hours that MB of Henderson was going to charge us for just the initial inspection!