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RAC reports sustained supermarket fuel price increase

Date: 30 May 2018   |   Author: Sean Keywood

The average price of petrol and diesel at UK supermarkets has risen every day since the end of March, meaning a total increase of more than 8p a litre.

That's according to the RAC, which says the average supermarket price of a litre of petrol rose from 116.66p to 124.74p in eight weeks, while the average supermarket litre of diesel rose from 119.35p to 127.69p.

Overall UK average prices have risen even more over the same period - although not every day - with petrol going from 119.78p to 128.29p, and diesel from 122.54p to 131.15p. 

The RAC says the rises are due to the price of oil increasing to above $80 a barrel, combined with a poor pound to dollar exchange rate of $1.33, which negatively affects the cost of fuel on the wholesale market as fuel is traded in dollars.

RAC spokesman Simon Williams said: "This is the worst series of consecutive daily supermarket price rises we have seen since we began monitoring this three and a half years ago.

"The supermarkets are being very quick to pass on increases in the wholesale price of fuel brought about by a 17% rise in the price of oil to above $80. 

"Sadly, RAC Fuel Watch data shows they are far faster at passing on rises in the wholesale price than they are falls."

Williams said supermarkets were highly influential when it comes to the price charged at pumps since despite operating less than 18% of all forecourts, they sell 45% of all fuel. 

He added: "While other fuel retailers don't buy as frequently they will often match supermarket price rises, which means they increase as the supermarkets do.

"Unfortunately, the higher oil price has come at a time when the pound has weakened considerably against the dollar.

"This causes pain at the pumps due to the fact that, similar to oil, fuel is traded in dollars so the lower the exchange rate, the worse the price gets for UK motorists."

Williams warned that further oil price rises could lead to continued increases at the pumps.

"If oil were to rise to $90 a barrel and the pound was to stay at $1.33 the average pump price of unleaded would shoot up to 137p a litre," he said.

"And if it were to reach $100 a barrel with the current exchange rate we would likely see a new UK petrol high price of 143p a litre - clearly something none of us want.

"In either scenario the impact on private motorists and businesses in the UK would be substantial."

Williams said that the last time oil was at $100 a barrel forecourt prices were around 129p a litre for petrol and 133p for diesel because the pound was worth 20% more at $1.67.

He added: "This is sadly a very clear demonstration of how important the strength of sterling is in the price motorists pay for fuel.

"The outlook for fuel prices in the weeks ahead is not good with another penny a litre expected to be added to the current average prices of petrol and diesel.

"All we can do is hope the international forces which have caused the oil price to rise ease and take the heat out of prices on the forecourt."

Williams said that in the meantime drivers could think about changing their driving styles to improve fuel economy.

"Avoiding harsh acceleration and braking, and keeping their vehicles moving at more constant, slightly slower speeds could help take some of the sting out of fuel bills," he said.