Over here, such cars are normally in camouflage from the depot of the german army, no extras and small diesel-engines. But they are rust-free, and that's all, what counts.
Driven distance by myself: 33,853 miles / 54,494 km Filled up diesel: 1,276.88 gal / 4,833.51 liter average mileage over this: 26.51 miles per gallon or 8.87 Liter per 100 km