I agree the cost isn't the point but just for interest and very approximately. ....
Depreciation( based on assumed current value) 16pence
Fuel (40mpg av and 115 pence per litre) 13pence
Mtce (includes partial loom rewire, 2 sets of kingpins
Remedial work on paint corrosion new calipers and wheel cylinders, 2 sets of tyres etc..) 11pence
Tax

3.3 pence
A bit higher than I had expected but not too bad 43 pence per mile. Not much for a lot of