Although I only purchased this vehicle one month ago I have been out on two road trips (over hill and dale) of 600 miles or more each. I have owned a number of quality vehicles over the past 35 years and SUV's in particular for the past 7 years. I have found the ML320 CDI Turbo Diesel to be far superior in every category to our 2000 Toyota 4 Runner Limited (gold edition).
Clean turbo diesel responsiveness and gas mileage. AWD hadndles and rides like a luxury sedan.
Consider adding another foot or so to the rear cargo area. Space is at a premium when two couples travel with 3 or 4 suitcases each.