Fuel prices increased for the third month in a row in September despite a 6p per litre drop in wholesale costs, according to data from the RAC.
The automotive services firm's fuel watch data showed the average cost of a litre of unleaded fuel rose by nearly 1p a litre to 119.19p while diesel prices increased by 1.34p to 120.31p, making both fuels the most expensive they've been since March.
The RAC expects retailers to cut petrol cut prices in the coming days due to the drop in wholesale prices, which occurred despite oil prices shooting up to nearly $60 a barrel last week thanks to an increase in the strength of the pound.
RAC fuel spokesman Simon Williams said: “We saw the supermarkets cut 2p a litre off petrol in late September as a result of the lower wholesale price. But there is now scope for a further round of pump price reductions.
“If the big retailers were to play fair with motorists we would see at least another 2p a litre come off unleaded at the pump. This would be good news as it would drive the price of unleaded down from 119p a litre towards 117p."
Williams added that with oil prices at their highest since early 2015 in recent days, motorists were saved from steeper prices due to the pound gaining some strength.