US petrol

Living here in the US, I find people complaining about the cost of gasoline (currently about $3.40 per US gallon).  How does that compare?  In the UK, costs are about 1.35 UK pounds per litre.  A litre is 0.26 of a US gallon and the exchange rate is about 1.54.  This is about $8 per US gallon.  The BBC helpfully shows that about 60% of the UK costs are tax and duty