Kaufberatung G 320 CDI

I have been driving a ML 270 CDI for almost 8 years. I will be separated from the car for a short time or a long time. As a successor I have considered the G 320 CDI from the year 2006. Since after my Internet search only a very limited proportion of short body versions was sold, it will probably become a long version. What is the exact designation, 463 ***? What speaks for the car and what against? Does it make sense to buy a car in this price situation of private? With which chew I only had the 400 CDI in mind, but with the 400 CDI probably the same flaws on the drivetrain as with the W163, right? Where are the flaws on the vehicle and how does it look with rust overall on the G? What should be especially taken into consideration when buying used vehicles? Does any of you possibly have such a vehicle and could copy, borrow or sell its brochure and price list to me? I n which area does the actual fuel consumption in everyday operation move How is the classification in the insurance? Since I could not drive a G sample yet, here is the question about the difference in driving behaviour on the road in contrast to the ML. I mean the G is overall more uncomfortable, so harder than the ML? I hope you can help me in the decision making. Should one of you have such a car for sale, also to a defined later Time then send me a PN.