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Image: Getty
Image: Getty

Press release -

September brings an end to three months of rising fuel prices - but diesel remains overpriced

After three consecutive months of rising costs at the pumps the average price of both petrol and diesel stayed the same in September, according to RAC Fuel Watch* analysis – but the data suggests diesel drivers are still paying significantly more than they should be.

A litre of unleaded remained at 114p (actual price 114.61p – down 0.17p) while diesel continued to be sold at an average of 118p a litre with a tiny drop of a third of a penny (actual 118.10p – down from 118.43p).

The average price of fuel sold by the big four supermarkets still stands at 109p a litre and diesel 114p (actual 113.93p – down 0.26p). Motorway fuel prices, however, rose with petrol increasing 2.57p a litre to an average of 126.72p across all sites. Diesel went up 1.83p to 131.14p.

With the average UK price of unleaded standing at 114p it means a full 55-litre tank will set drivers back £63 – £7 less than January. Diesel drivers are now paying £65 for a complete fill-up in contrast to the start of the year when it was nearer £73.

But anyone filling up a diesel vehicle should, in fact, be paying far less as the wholesale price of diesel has been lower than petrol for six weeks, yet its average forecourt price is 3.5p more expensive than petrol’s. Over that time the wholesale price of a litre (excluding delivery, retailer margin and VAT) has averaged just over 85p compared to petrol at 87p. This means diesel could be sold by the lowest cost retailers for around 110p a litre, still allowing for a 5p retailer margin – in stark contrast to the current 11p a litre.

Unleaded is now nearly 9p a litre more expensive than its pandemic low of 105.81p on 21 May; diesel is almost 7p a litre dearer than its low of 111.23p. But positively, prices are still dramatically cheaper than they were at the end of January when petrol cost 128p and diesel 132p – that’s 13p and 14p respectively.

RAC fuel spokesman Simon Williams said:

“After three months of rising fuel prices drivers will be relieved to see the cost of both petrol and diesel staying the same. Since June when prices stopped falling as a result of the coronavirus movement restrictions being eased, the cost of fuel has been going up steadily. While price rises are never good news, they have not gone back to the high levels seen at the beginning of the year.

“Despite this, diesel drivers should feel short-changed by the decision of retailers to keep prices artificially high. The price of a litre is currently 8p higher than it should be due to reductions in the wholesale price. In fact, the wholesale price of diesel has now been lower than the petrol equivalent for six weeks, yet petrol continues to be sold for 3.5p less than diesel. This must surely be difficult for retailers to justify. We strongly urge them to lower their prices in an effort to restore drivers’ trust.

“While it’s always difficult to predict what’s going to happen with fuel prices, imminent rises would now appear pretty unlikely. With the summer travel peak behind us and with ever more coronavirus restrictions being introduced, the demand for fuel is likely to wane. The price of oil has already dropped back to below $40 for the first time in two weeks as the increasing number of Covid-19 cases dampened traders’ demand forecasts. This coupled with a higher than expected output of oil from oil producer group OPEC could lead to lower prices on the UK’s forecourts in the coming weeks.”

Regional fuel price variation

Regional average unleaded pump prices

Unleaded 01/09/2020 30/09/2020 Change
UK average 114.78 114.61 -0.17
East 115.30 114.82 -0.48
North East 113.80 113.12 -0.68
London 116.32 115.82 -0.5
Wales 114.03 113.55 -0.48
South East 115.98 115.55 -0.43
South West 114.83 114.48 -0.35
West Midlands 114.85 114.61 -0.24
East Midlands 114.50 114.32 -0.18
North West 114.46 114.38 -0.08
Northern Ireland 111.36 111.31 -0.05
Scotland 114.42 114.42 0.00
Yorkshire And The Humber 113.82 114.08 0.26


Regional average diesel pump prices

Diesel 01/09/2020 30/09/2020 Change
UK average 118.43 118.10 -0.33
East 119.65 119.15 -0.50
Scotland 118.23 117.76 -0.47
West Midlands 118.59 118.12 -0.47
Northern Ireland 114.69 114.25 -0.44
South East 119.95 119.53 -0.42
London 119.34 118.93 -0.41
South West 118.41 118.04 -0.37
Wales 117.79 117.44 -0.35
East Midlands 118.33 118.02 -0.31
North West 117.97 117.69 -0.28
North East 117.02 116.77 -0.25
Yorkshire And The Humber 117.57 117.44 -0.13

Find out more about UK petrol and diesel prices.

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