You have got that in reverse, I’m a trader, I see em every day…
Drivers door falling off, rusty sills, rusty rear spring mounts, diesel pumps are the first things I check before I either reject or bid the owner in the balls.. Granted they will run for ever as apart from hi pressure pumps they’re mechanically bomb proof, but a transit of any style without rust is a rare beast.
My fleet is Scudo/ Dispatch / Expert and an M59 berlingo,,.. Which as a rule don’t rust and have bombproof engines, especially 2.0hdi and non turbo dw8. If people ask for the most reliable I’ll always recommend dw8 over the hdi, but a 2.0hdi scudo is used for breakdown /recovery due to the extra power and economy- and no small fact I know how to screw them back together on the odd occasion the electronics /ecu/ bsi goes down ;)