The RAC is warning pump prices are likely to rise after the price of a barrel of oil went above $70 on Tuesday January 9, the first time it has reached this level in more than three years.

Data from RAC Fuel Watch shows that the cost of a barrel was last over $70 on 3 December 2014 when a price of $70.22 was recorded.

It said this was likely to have a knock-on effect on the forecourt due the increase causing the wholesale price of fuel to rise.

The RAC is fearful that $70 a barrel could become the new norm for 2018, something that would be bad news for motorists without a significant strengthening of the pound which would keep wholesale prices in check due to fuel being traded in dollars.

The RAC’s current two-week forecast for pump prices shows a fairly static picture but it warns this could fast change if the oil price remains above $70.

Even prior to the recent oil high two supermarket retailers added 0.5ppl to their prices in one day, and the UK average prices of both petrol and diesel have gone up by nearly a penny since Christmas.

RAC fuel spokesman Simon Williams said: “Oil hitting $70 a barrel is potentially very bad for motorists who are already having to get used to paying 7ppl more for petrol and 9ppl more for diesel than they did last July.

“If oil stays at this level, pump price hikes will be almost inevitable.”

The last time oil was at $70 the price was falling due to the decision of OPEC – the Organization of the Petroleum Exporting Countries – to deliberately overproduce oil with a view to lowering the barrel price and making it financially unviable for the United States to produce oil from fracking.

From the middle of 2014 motorists in the UK began to benefit from falling pump prices, culminating in December 2015 when a few low-cost retailers sold both petrol and diesel for under £1 a litre. The oil price bottomed out in early 2016 at $26 a barrel leading to national average pump prices of 101.65p a litre for unleaded and 100.78p for diesel.

Since then prices have risen, averaging 118p a litre for unleaded in 2017 and 120p for diesel.

Williams added: “Looking at the global oil picture it seems as if the glut of oil stocks is disappearing due to the production cuts imposed by OPEC along with non-member Russia as the United States’ crude oil inventories have fallen for eight weeks in a row. The US is now producing far more from fracking but this isn’t filling the gap from the OPEC cuts.

“If, however, the US’s fracking production increases substantially there is a hope that the price of oil may fall back and settle at the mid-$60 a barrel mark. This would, of course, be far better news for UK motorists.”