Shopping for Class B Diesel. Advice for newbies please!

chris.UP wrote:
One more question, I had assumed the Mercedes diesel engines are all the same, except for modifications as they get newer. Is that wrong, and if so which is better?

Well, that depends on the criteria. Older Sprinter diesel engines (like ours) have better mileage due due to upgrades to pollution controls on the newer ones. But all vehicle engines have made amazing advances in durability.