Don't have those worries with my 190D. Having said that, if it runs out of fuel or has a fuel filter change its a bastard of a thing to start.
I have been running it low on WVO over the last week so I could put diesel in for the MOT. Yesterday I calculated that I had no more than 15 miles of fuel left so drove 2 miles to the nearest garage. It actually ran out as I pulled up at the diesel pump !
I had a hell of a job getting it to start again. It was trying to fire, but the battery was getting low so it couldn't quite fire and keep running.
I had to leave it for 5 minutes to rest the battery and try again, and after 5 or 6 attempts at this it managed to start.
I was at the point of calling swmbo to come to the garage with a set of jump leads.