Model Year Comparison
- Worst Model Year
- Worst Category
- AC / heater Problems
We don't have a lot of complaints on file for the Mercedes-Benz GLS550 — feel free to add yours here. It's either not very popular ... or it's very, very good.
The 2017 Mercedes-Benz GLS550 has the most overall complaints, & we also rate 2017 as the worst model year ranked on several factors such as repair cost & average mileage when problems occur. The most-reported problem is also with the 2017 Mercedes-Benz GLS550 for a foul horrible smell.