Car and Fuel Costs
Costs the earth, but how much money.

Statics:
1 Imperial gallon = 4.54609188 litre.
30 miles per gallon.
£1 per litre.
£4.54 per Imperial gallon.
13,333 miles per year.
40,000 miles in 3 years.

Sums:
30 miles per gallon = 6.6 miles per litre (30 miles / 4.54609188 litres).
£1 per litre = £0.15 per mile (£1 / 6.6 litres).

Totals:
£6060 for 40,000 miles (£0.15 * 40,000 miles).
£2020 per year.