Average fuel prices rose by 2p per litre in December because three major supermarkets introduced a 3p price hike.

The RAC says wholesale prices increased by only 1p per litre and argues that pump prices should be lower.

The average price of petrol went up from 114.39p to 116.46p (2.07p) and diesel from 117.72p to 120p (2.28p) over the course of the month.

On the wholesale market a litre of unleaded went up by 1.28p from 85.76p to 87.04p. Diesel rose by 1.11p from 88.33p to 89.44p. Looking at wholesale prices from two weeks ago – the time it takes for all retailers to replenish their stock, the RAC believes drivers should in fact be paying around 113p for petrol and 118p for diesel.

Of the four big supermarkets fuel retailers, Morrisons, Sainsbury and Tesco all raised their forecourt prices by an average of 3p a litre, with only Asda matching the wholesale market price increase by raising its prices by around 1.5p a litre.

RAC fuel spokesman Simon Williams said: “It’s very disappointing to see some of our biggest fuel retailers putting up their prices over and above the increases seen on the wholesale market. There’s a definite feeling that they have been trying to protect themselves for what was to come in terms of further coronavirus restrictions.

“While wholesale prices went up very slightly in December our data shows there should be scope to lower forecourt prices rather than put them up. Retailers will no doubt argue that the pandemic is leading to drivers filling up far less so their ‘per litre’ profits are considerably down, and Monday’s announcement of another lockdown will be treated as justification for their decision not to pass savings on at the pumps.

“Unfortunately, those who still need to fill up regularly are having to pay more than they should be as, by our calculations, both fuels should actually come down by 3p a litre in the next fortnight.”

Regional pump prices compared:

Unleaded	01/12/2020	30/12/2020	Change
UK average	114.39	116.46	2.07
East	114.36	116.94	2.58
East Midlands	114.22	116.37	2.15
London	115.50	117.48	1.98
North East	113.24	115.30	2.06
North West	114.44	116.13	1.69
Northern Ireland	110.76	112.62	1.86
Scotland	114.15	115.89	1.74
South East	115.24	117.45	2.21
South West	114.25	116.55	2.30
Wales	113.26	115.31	2.05
West Midlands	114.20	116.34	2.14
Yorkshire And The Humber	113.78	116.03	2.25

 

Diesel	01/12/2020	30/12/2020	Change
UK average	117.72	120	2.28
East	118.36	120.84	2.48
East Midlands	117.68	120.07	2.39
London	118.27	120.43	2.16
North East	116.63	119.00	2.37
North West	117.49	119.47	1.98
Northern Ireland	113.36	115.45	2.09
Scotland	117.43	119.77	2.34
South East	118.90	121.32	2.42
South West	117.53	120.20	2.67
Wales	116.84	119.43	2.59
West Midlands	117.78	119.90	2.12
Yorkshire And The Humber	117.09	119.60	2.51