IF 1 gallon (US) = 3.78541178 litres...
The UK petrol[eum] ('gas[oline]') prices fluctuate by location and also week by week; but they seem to do nothing but go up since the start of the year. Currently it's just over £1 per litre - that makes a US gallon about £4. Since there's currently about $2 in £1 that means that in the UK we are paying the equivalent to someone in the US paying $8 per gallon... plus/minus 15 cents???
Thirty-plus years ago in the UK when fuel rocketed in price within a matter of weeks and it rose up to ~40p per gallon(Imp), everyone said that there'd be riots in the street when petrol eventually hit £5 per gallon. We're not quite there yet, although we're 90% of the way with it at about £4.70 per gallon(Imp), BUT in terms of disposable income I guess that we're earning about 10 times more, so fuel is 'pro rata' only ~20% MORE expensive than it was back then...
In the same time frame beer has about doubled in price - 'pro rata' on your earnings !!!! What was three/four/five beers for one pound is now one beer for two/three/four pounds - depending on the beer and how 'posh' the bar is !!!!