On Thursday, April 2, 2015 at 3:03:04 AM UTC-5, wrote:
I was quoted $3,500 to $4,000 by the Mercedes Benz dealer to install a factory tow hitch on to a ML 350 Bluetech 2011! I was wondering if anyone else had this happen and if so, where did you go to have the work done and were you happy with it? I live in Southern Cal.

- Funny, after visiting my local MB dealer, I installed one by myself last week on the 2013 ML, for the very same reason. Bought the hitch on internet for about $350. Don't know where do you live but typical large city has some sort of mechanical shop specializing in European cars. Go there, installing a hitch really isn't a big deal.