"I bought 04 Mercedes G500 in 2006. It has been a great car on the road and off the road for the power. I would say it is more luxuries and security car rather than convenience and comfortableness.
First of all, no one can leave the car unless driver unlocks the car so it is kinda annoying. Before when I bought this car, I was dreamed about this car and planned to buy it for a long time. It didn't disappoint me at all but when I take it to the off road I can hear some raddling nose on the back door.
I took it to the dealership for repair and I found out it makes that kind of nose often and other customers also noticed it because extra tire on the back is too heavy for the door and when people take it to the off road it just started making a noise. It didn't cost me allot, they just have to strengthen the back lock but it was annoying for me to go back to dealership for this situation once or twice a month because I take the car off road allot and finally I took off the extra tire on the back and it stopped making a noise but then it looks so on the back without extra tire.
It is a strong car, lovely car, chick magnet car and I have had several SUVs like Landcruiser, Lexus and Range Rover. It was the best of all but I guess it is because I liked it so much.
Also it is not a soft car when you take it on the road and if you drive on the road for long hours like me, you will get tired of driving it after several hours. Specially when you take it to the long off road trip, it is hard and uncomfortable. I believe G500 is the one of the best SUV that Mercedes produce but I don't know why they don't upgrade the suspension system and the back lock problem. I heard this problem is passed on to 2005 - 2008 but I heard 2009 has more soft suspension but I haven't tried it yet, if it is true I would like trade my car for it. For the gas mileage, this car is super. it is not comparable to the V6 or V4 but it is a best for V8 car. It is a powerful, super fast car but gas mileage is low for V8 car. Overall, I loved my G500 and I would like to buy new version if they fixed the suspension and back door lock problems. i would recommend this car to someone who loves to drive tough, fast, powerful SUVs but if you are looking for comfortable, convenience, inexpensive car, pls don't buy."
"The best SUV! The only competition is the Hummer H1 (the real one). The G55 by AMG is a fast performance SUV and the engine and 4 wheel drive system the best in the world. It is military grade and used by the army in both Norway and Switzerland. The Pope drives one and the Sheik of Dubai. There is a big difference between the G55 AMG and the standard G500. Go for the AMG if you can. As for gas mileage, forget about it. You buy a car to burn gas, not to save gas! God Bless America. The Freedom to drive what you want."