That's another misconception about modern diesels.
My van was a 2 year old ex-delivery vehicle and had 60k km on the clock when I got it.
Most days I do at least a single trip of ~1 km in the van to drive the dogs down to the river for a run and then it might sit in the drive for the rest of the day.
Other driving, e.g. shopping, men's shed, family visits, adds maybe 20km total, most of those trips are short between 5 and 10km but not all in the van.
If it's available and load capacity is not needed I do try to use SWMBO's diesel Subaru, not because of wear and tear but being a 2L , the Subaru uses less fuel than the 3L van.
I had the van serviced recently and the mechanic said the engine is in excellent nick.