Following a dramatic drop in the price of a barrel of crude, the organisation says there is scope for the price of a litre of petrol to come down by more than 7p a litre and diesel to drop by nearly 6p, bringing the average price of a litre of petrol to 114p and diesel to 120p – prices last seen across the country in March 2010.

Currently, the average price of petrol stands at 120.84p, with diesel at 125.43p whereas at the start of the year petrol was 130.79p a litre and diesel was 138.24p.

RAC fuel spokesman Simon Williams said: ‘The forecast reduction that retailers should be passing on is the biggest the RAC has seen in recent years, even since petrol began to come down from its record high of 142.48p a litre on 17 April 2012 (diesel 147.93p – 13 April 2012).

‘Retailers now have a very reasonable record on transparent pricing so we have no reason to believe that they will not pass on the savings in the wholesale price, we just urge them to do it sooner rather than later to make the point very clearly to motorists and fleet managers that they operate a fair pricing system.

‘If they do, we could well see petrol pump prices fall by well over 7p a litre in the next few weeks and diesel by almost 6p a litre.

‘With this kind of drop in the national average prices, motorists such as company car drivers, will no doubt see some very low petrol prices – perhaps under 110p a litre from retailers who pride themselves on having the lowest prices.’

He added: ‘While motorists, including company car drivers, are enjoying much lower forecourt prices it’s important to recognise that they will always be limited by fuel duty, which represents nearly 58p in every litre, and VAT which is charged on top, at around 20p a litre. A driver filling up a 55-litre petrol car at 114p a litre would therefore pay £62.70 of which £31.87p would be duty, £10.45 VAT and only £20.38 for the fuel itself.’