I bought a 2013 Mercedes GL450 back in 2018. It had 64k miles at the time. It is a fantastic trip vehicle and we have used it for many long road trips. It hit 100k miles the other day.
As I said this is a fantastic road trip vehicle. We have taken it on numerous long road trips from 500 miles to 1800 miles each way. I have made several trips over 1700 miles in 2 days and with me behind the wheel the whole time. This has the lowest driver fatigue of any vehicle I have ever owned. For a large SUV it actually handles pretty well. The fuel economy is not bad either for an SUV this size. It has done 21MPG on road trips and I generally get about 17MPG in town. The twin-turbo 4.7L V8 has a nice wide powerband and good power. I have towed a car on a trailer up steep hills out West with little effort.