Fuel retailers are ripping off the public and businesses on diesel charges , according to the RAC . The wholesale price of diesel is 1p a litre more than for petrol , yet diesel is almost 6p more at the pumps , it said . There is scope for a diesel price cut of around 4p a litre to restore some parity to the market , the RAC added . The automotive company calls out retailers , saying businesses in particular are paying excessive charges on Diesel as sales of the fuel increase . The RAC ’ s comments came as it highlighted Government figures which showed total fuel sales were up 3.5 per cent in February compared with the same month last year . Diesel sales last month , at 2.42billion litres , represented the fifth highest monthly total since 1990 . But petrol sales are among their lowest for 25 years . Businesses , which are more likely to run on Diesel are being ripped off by retailers who are looking to offset losses from low petrol prices . Because companies traditionally run on diesel , they are particularly hard hit by the fuel rip-off . RAC spokesman Simon Williams said : ‘ It ’ s hard not to think that business is being taken for a ride . 'With sales of diesel at an all-time high the retailers have maintained a higher margin on diesel , perhaps to subsidise petrol sales . ’
RAC says individuals and business paying unfair charges on diesel . Government shows fuel 's sales up 3.5 percent in February on last year . Diesel sales unusually high while petrol sales at 25 year low . Companies , which more often run on diesel , are hit hard by the fuel rip-off . Price of diesel should be cut by 4p to make the market fair RAC says .