The van was diesel even more than petrol so now I can save a tiny bit on fuel

???

Diesel - 1.20 a litre. Petrol - 1.18 a litre.

Diesel 50+ MPG. Petrol 40MPG?

1 tank of diesel (50 litles) = £60. 1 tank of petrol = £59

Distance covered by diesel = 550 miles Distance covered by petrol = 440 miles

Cost per mile diesel = 11p Cost per mile petrol = 13p

And none of that includes cheaper road tax for efficient diesels, lower servicing costs and reduced insurance premiums.

Seems like someone got their sums wrong. As well as their politics.

DeG