The average price of both petrol and diesel at UK filling stations fell by 6.5p per litre in September, according to data from the RAC.
The motoring organisation said the average litre of petrol fell to 134.79p during the month, while diesel fell to 139.5p.
Since the start of May, the average litre of petrol has fallen in price by 15.5p, while diesel has come down by 18.5p.
The RAC said continuing falls in the price of oil were behind the pump price reductions.
RAC head of policy Simon Williams said: “Drivers will be very pleased to see prices at the pump not only continuing to fall but dropping by 6.5p in just a month as this translates to saving £3.60 on a full tank.
“Since the start of May prices have come down dramatically. The reductions have primarily been driven by a drop in the price of oil from above $90 in early April to below $70 briefly in mid-September, supported by a slightly stronger pound which makes wholesale fuel cheaper as it’s traded in dollars.
“With analysts predicting oil may continue to fall on the back of a weakened global economy and Saudi Arabia upping its output to regain lost market share, the immediate future on the UK’s forecourts looks considerably brighter for drivers.”
