How about the durability of 4cyl little engine ? My friend's cousin put 990k ! on 2008 V6 Sprinter . Same engine , nothing touched . Well , he had a tune with EGR and DPF deleting .
Do you guys think that a little 4cyl engine will make like 500k ?
Yes , fuel economy is 18% better , but do not we need durability ?
I am surprised that no one knows that 4 cyl engine has only single timing chain . V6 has a double timing chain , just like all of MB's diesels in those good old years . I was born in Europe , and I've seen a LOT of MB diesels with over a million miles and you did not have to touch that timing chain , because it never fails .
On 4cyl engines the timing chain is also in the back , so the engine has to be taken out . How much will it cost ? All money that you can save on fuel ?
High mileage problem with the om651 diesel - MBClub UK - Bringing together Mercedes Enthusiasts
There are even people , here in USA that called that shop and asked if 4cyl should be avoided if you want to put a lot of miles on your van ( yes , we want )