Last year, according to Wood Mackenzie, a litre of unleaded 95 RON gasoline, excluding duty and VAT, cost 19.01p in Britain. Petrol in Italy, which has a relatively flabby distribution system, was Europe's priciest, at 23.79p a litre. But, with the relatively benign rates of tax applied, the retail price of Italian petrol worked out almost 3p a litre cheaper.