Inflation doesnt affect F1 teams then? Petrol was about 40 pence per litre in 1990 and average of 112 pence now which makes the budget jump look a lot better than your post suggests.
Do teams pay for fuel then? I assumed they got it for free as part of the deal to run said manufacturers fuel?
Besides fuel costs are a drop in the ocean to the way team budgets have gone up. Regardless of what fuel costs per litre team have busted that 100 times over.