That depends on which country you are buying the petrol, in the UK the price per litre is currently £1.03 (27th Aug 09)
In thr UK in the early 1960s, a gallon of petrol cost from four shillings to five shillings, 20 to 25 pence in modern currency.
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In the UK, petrol cost about 20 pence per UK gallon in the 1950s.
1 litre of petrol
Petrol cost Rs 7.60 per litre in India.
From Cardiff to Glasgow is some 400 miles and would cost about £75 in petrol.
it's about $2.00
50 dollars
cost of refining the crude oil ofcourse... In the UK diesel is more expensive than normal unleaded petrol.
It depends on the cost of said petrol and the efficiency of the vehicle in "miles per unit of petrol". You didn't supply enough information.
Nothing, airplanes don't use petrol.