Skip to content

MAY SEES WORST INCREASE IN PRICE OF PETROL IN AT LEAST 18 YEARS

News From The RAC

Motorists suffered the worst monthly rise in the average price of petrol in at least 18 years* with 6p a litre being added at the pumps in May, new RAC Fuel Watch data reveals.

Unleaded shot up from 123.43p to 129.41p, taking the cost of filling up a 55-litre family car to £71.18 – an increase of £3.29 in just one month.

While the average price of a litre of diesel endured a slightly greater monthly increase of 6.12p – from 126.27p to 132.39p – it was the second worst rise since the start of 2000, as it was fortunately some way behind the 8.43p increase seen 10 years ago in May 2008 (120.83p to 129.26p). The May 2018 rise has made the cost of a tank of diesel for a family car £3.37 more expensive at £72.81.

The RAC Fuel Watch data also shows the average prices of both petrol and diesel have gone up every single day since 22 April, adding 8p a litre in the process – the longest sustained price increase since March 2015.

In May the big four supermarkets raised petrol by 5.49p a litre and diesel by 5.88p while on the motorway, service stations added 6.37p to unleaded, taking it to 144.75p a litre, and 6.69p to diesel making it an eye-watering 147.80p a litre – 15p a litre above average UK prices for both fuels.

The forecourt increases have been driven by a jump in the price of oil, coupled with a weakening of the pound against the dollar. Oil broke through the $80 a barrel mark twice in May – something which has not been seen for three and a half years (since 12 November 2014).

Overall, May saw a 3% increase in the price of a barrel of oil (from $74.31 to $76.39) and a 2% drop in the value of the pound against the dollar ($1.35 to $1.33), making the wholesale price for retailers more expensive as fuel, like oil, is traded in dollars.

RAC fuel spokesman Simon Williams said: “May was a hellish month for motorists. Sadly, they have been besieged by pump price rises for three months with nearly 9p a litre being added to petrol since the beginning of March.

“The rising oil price together with a weaker pound is a punitive combination for anyone that drives regularly. For many people there is little alternative to the car for the majority of journeys they have to make so it is therefore very difficult to avoid feeling the pinch of rising pump prices.

“In the last week of May the oil price cooled a little to $76 a barrel which is slightly better news for motorists as the RAC’s two-week forecast is currently showing that average prices may even reduce by a penny or so. While this isn’t much, and could easily change in response to oil trading this week, it is at least a sign that the constant rise in forecourt prices may have stopped for the time being.

“Looking at the bigger picture, there is talk that OPEC – the Organization of the Petroleum Exporting Countries – may agree at its meeting on 22 June in Vienna to change its tack of restricting oil supply. The group, together with Russia, have been limiting production with a view to removing the long-term oil glut. This strategy has been successful and, as intended, caused the barrel price to rise. If a decision is taken to increase supply it may provide some much-needed relief for motorists at the pumps in the UK.”

Regional fuel price variation

The North West experienced the biggest rise in petrol prices with a litre going up 5.98p in May to 128.72p. Northern Ireland saw the smallest increase at 5.07p a litre, although unusually their unleaded was not the cheapest in the UK as that honour went instead to the North East with a litre costing 128.24p at the end of May. The South East once again was the most expensive place to buy petrol with a litre averaging 129.83p.

Looking at diesel, drivers in Wales endured the greatest increase on the forecourt with a litre jumping by 6.07p to 132.03p. The North East and South East had the smallest rise at 5.66p, but a litre of diesel in the South East is the most expensive in the UK at 132.73p.

Regional average unleaded pump prices**

Unleaded 01/05/2018 30/05/2018 Change
UK average 123.43 129.14 5.71
North West 122.74 128.72 5.98
East Midlands 123.24 129.20 5.96
Yorkshire And The Humber 122.57 128.42 5.85
West Midlands 122.99 128.80 5.81
Scotland 123.21 129.01 5.80
South West 123.55 129.35 5.80
Wales 123.18 128.88 5.70
South East 124.19 129.83 5.64
East 123.88 129.43 5.55
London 124.22 129.74 5.52
North East 123.09 128.24 5.15
Northern Ireland 123.32 128.39 5.07

Regional average diesel pump prices**

Diesel 01/05/2018 30/05/2018 Change
UK average 126.27 132.06 5.79
Wales 125.96 132.03 6.07
Scotland 126.40 132.35 5.95
South West 126.48 132.33 5.85
Yorkshire And The Humber 125.46 131.28 5.82
East 126.74 132.54 5.80
North West 125.92 131.72 5.80
West Midlands 125.73 131.53 5.80
Northern Ireland 125.31 131.05 5.74
East Midlands 126.23 131.91 5.68
London 126.90 132.57 5.67
North East 125.65 131.31 5.66
South East 127.07 132.73 5.66
-23%
FRONT AXLE BRAKE PADS for MAZDA 6 Hatchback 1.8 MZR 2007-2013
eBay
£51.91 £67.99
FRONT AXLE BRAKE PADS for MAZDA 6 Hatchback 1.8 MZR 2007-2013
-23%
Front Axle BRAKE DISCS and BRAKE PADS SET for MITSUBISHI CARISMA 1.6 2000-2006
eBay
£98.91 £128.99
Front Axle BRAKE DISCS and BRAKE PADS SET for MITSUBISHI CARISMA 1.6 2000-2006
-23%
Front Axle BRAKE DISCS + PADS SET for FORD MONDEO Saloon 1.6 EcoBoost 2010-2015
eBay
£166.91 £216.99
Front Axle BRAKE DISCS + PADS SET for FORD MONDEO Saloon 1.6 EcoBoost 2010-2015
Fits KYB KYB3338013 Shock absorber 3338013 Shock absorber front L fit ⭐UK Stock⭐
eBay
£86.84
Fits KYB KYB3338013 Shock absorber 3338013 Shock absorber front L fit ⭐UK Stock⭐
-23%
FRONT BRAKE PADS for AUDI R8 5.2 FSI quattro 2009-2015
eBay
£63.91 £83.99
FRONT BRAKE PADS for AUDI R8 5.2 FSI quattro 2009-2015
-23%
FRONT AXLE BRAKE PADS for FORD MONDEO IV 2.3 2007-2014
eBay
£51.91 £67.99
FRONT AXLE BRAKE PADS for FORD MONDEO IV 2.3 2007-2014
-23%
Front Axle BRAKE DISCS and BRAKE PADS SET for VW FOX 1.2 2005-on
eBay
£92.91 £120.99
Front Axle BRAKE DISCS and BRAKE PADS SET for VW FOX 1.2 2005-on
-23%
FRONT AXLE BRAKE PADS for PORSCHE CAYMAN 2.9 2009-2012
eBay
£51.91 £67.99
FRONT AXLE BRAKE PADS for PORSCHE CAYMAN 2.9 2009-2012
-23%
REAR AXLE BRAKE PADS for JEEP GRAND CHEROKEE III 4.7 V8 4x4 2005-2010
eBay
£58.91 £76.99
REAR AXLE BRAKE PADS for JEEP GRAND CHEROKEE III 4.7 V8 4x4 2005-2010
-23%
GEAR CONTROL CABLE for MINI MINI CLUBVAN One 2012-2014
eBay
£77.91 £101.99
GEAR CONTROL CABLE for MINI MINI CLUBVAN One 2012-2014
-24%
FRONT AXLE BRAKE PADS for TOYOTA YARIS 1 2011-on
eBay
£50.91 £66.99
FRONT AXLE BRAKE PADS for TOYOTA YARIS 1 2011-on
-24%
FRONT AXLE BRAKE PADS for SEAT LEON 1.8 TSI 2013-on
eBay
£50.91 £66.99
FRONT AXLE BRAKE PADS for SEAT LEON 1.8 TSI 2013-on
Aspen 4 ALKYLATE PETROL FUEL FOR 4 STROKE ENGINES MOWERS, CARS, BIKES PETROL OUTBOARD 5L
Amazon.co.uk
£39.49
Aspen 4 ALKYLATE PETROL FUEL FOR 4 STROKE ENGINES MOWERS, CARS, BIKES PETROL OUTBOARD 5L
ButterFox ASPEN2 2 STROKE ALKYLATE FUEL FRT PETROL FOR STRIMMER BRUSHCUTTER HEDGECUTTER CHAINSAW 2 STROKE MACHINES 5 litre can
Amazon.co.uk
£39.49
ButterFox ASPEN2 2 STROKE ALKYLATE FUEL FRT PETROL FOR STRIMMER BRUSHCUTTER HEDGECUTTER CHAINSAW 2 STROKE MACHINES 5 litre can
-39%
CarPlan TPH005 5L Fuel Can, Unleaded Petrol (Green)
Amazon.co.uk
£6.00 £9.99
PRIMEPRIME
CarPlan TPH005 5L Fuel Can, Unleaded Petrol (Green)
Redex Petrol System Cleaner 250ml, Petrol Injector Cleaner To Remove Harmful Deposits, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Petrol Engines, Suitable For Hybrids
Amazon.co.uk
£5.00
PRIMEPRIME
Redex Petrol System Cleaner 250ml, Petrol Injector Cleaner To Remove Harmful Deposits, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives...
Karlhome 20 L Metal Gas Can Fuel Tank Can Petrol Diesel Storage Can Portable with Flexible Spout, for Automobile Vehicle Off Road Emergency Supply, Green
Amazon.co.uk
£24.99
Karlhome 20 L Metal Gas Can Fuel Tank Can Petrol Diesel Storage Can Portable with Flexible Spout, for Automobile Vehicle Off Road Emergency Supply, Green
-2%
MadPaints 2-Stroke Aspen Petrol |5 Litres
Amazon.co.uk
£38.00 £38.99
MadPaints 2-Stroke Aspen Petrol |5 Litres
Draper 10L Plastic Petrol Can | Jerry Fuel Diesel Can | 10000cc Water Container | 20mm Flexible Spout Diameter | 290mm Spout Length | 09055, Green
Amazon.co.uk
£11.70
PRIMEPRIME
Draper 10L Plastic Petrol Can | Jerry Fuel Diesel Can | 10000cc Water Container | 20mm Flexible Spout Diameter | 290mm Spout Length | 09055, Green
-4%
STP Ultra 5 in 1 Petrol System Cleaner 400ml, Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK
Amazon.co.uk
£10.89 £11.46
PRIMEPRIME
STP Ultra 5 in 1 Petrol System Cleaner 400ml, Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated...
Amazon price updated: August 20, 2025 3:23 pm