Inspired by schmoomom
I haven't filled up for a while, but must do it soon. My tank holds 53 litres or 14 US Gallons. 53 x 1.119 (which is what the signs say) = £59.31 (US$115.90), making a US gallon cost £4.23. At today's exchange rate, our petrol costs US$8.26 per gallon.