That is good going - I had an old W124 300e that had that milage.
I was going to suggest the (now destroyed) TR Hamza High mileage Mk5...but that was only on a pitiful 200k miles.
Usually with that millage they have just lived on motorway, often constant use is better than under-use.
Not Mk5, but VAG related on YT Saving Salvage has a twin turbo V10 RS6 with 220k miles, just imagine the fuel burnt to get that far!