This vehicle does it all. Great highway cruiser with terrific fuel numbers ~7.5L/100km hwy, 9+ in the city. I bought my vehicle CPO, and when you are looking at vehicles of this caliber they all require premium fuel and you never know if the previous owner cheaped out on this front - with a diesel this is not an issue. I pull my 5000 lb boat all over and you don't even know it is behind the truck all while getting 12L/100km - this is better than the gasoline version of the ML. MB service is, as one would expect, a bit on the expensive side. Out of warranty DIY maintenance is fairly straight forward. If you are considering buying any model year of the W164 ensure it had the transmission fluid changed at 60,000km