It's not just MB diesels or low mileage MBs. It is any low mileage cars with some age on them. I saw a Pacer with something like 31,000 miles go for an outrageous price. I have also seen cars like '79 Ford LTDs with low miles go for $10,000 or more. I think people think that if they are low mileage they are like new - no maintenance. They don't think about rubber items dry rotting and seals drying up. I would much rather have a useable car with average miles and an impeccable service history. The low mileage cars don't seem practical unless you are going to continue to store/display them and not use them. I would be the type that would be less likely to drive a lower mileage older car because I would always think,"if I drive this to (insert destination here) then it will be x miles added to the car."