Safe to tow ? Mercedes GLS with a 4500 lb travel trailer

GrandpaKip wrote:
I thought you said family of 4 in the original post. That GLS is going to be taxed with 6 people. I would look at a van.

Yes, sorry, I edited the question.

My immediate family is only 4. However, we do have 2 grandparents who travel with us once in a while. When I posted the number as 4 originally, I got a few suggestions to buy an explorer instead. Since an explorer wouldn't fit 6 people comfortably, I edited the question from 4 to 6 to avoid any confusion.