even with that difference its still a hell of alot more expensive.. what unit to you measure your petrol in? ours is £/l of fuel. at the moment petrol is about £1.08 a liter and diesel is about £1.13 a liter.
i think you measure it in gallons over there, so in your currency it would be
2.14374 USD per liter of petrol
2.24277 USD per liter of diesel
if you do it in gallons
it is 3.785411784 UK liters to a US gallon, so for 1 US gallon we would be paying
$8.11493865783216 per gallon for petrol
$8.48980798680168 per gallon for diesel
according to this site:
an average price for petrol over there is $3.30, okay not quite 1/4 of it, but not far off...