Average petrol and diesel prices have seen an increase of 10p per litre since the beginning of this year, according to recent figures.

In April alone, data from the RAC reveals that the average price for a litre of petrol has risen by 3p to reach 150.0p. It claimed drivers are being 'seriously overcharged for diesel', with average prices rising by 2p per litre to 157.8p in April.

Rising pump prices since the start of the year have added around £5.50 to the cost of filling a typical 55-litre family car.

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In Greater Manchester, where you choose to refuel can significantly impact your petrol and diesel costs.

Some of the most budget-friendly petrol rates per litre are found at Costco in Manchester, priced at 140.9p (150.9p for diesel), and in Oldham at 141.9p (149.9p for diesel).

Texaco stations also offer competitive prices, such as Highshot Haslengen service station on Manchester Road, where petrol averages at 140.9p and diesel at 145.9p. Other Texaco stations on Atherton Road (Hindley service station), Manchester Road (Limes service station), and Chorley New Road (Horwich) are selling petrol at 141.9p and diesel at 151.9p.

Supermarkets like ASDA and TESCO are also in on the action with low prices. ASDA in Bolton and Horwich offers petrol at 142.7p, while TESCO Horwich Extra is close behind at 142.9p.

Additionally, ASDA provides competitive rates in Ashton-Under-Lyne and Leigh, selling petrol at 143.7p, while Sainsbury's Ashton Moss follows closely at 143.9p.

You can find the cheapest petrol and diesel prices near you by entering your postcode in the widget below.

Our widget uses data from thousands of forecourts in the UK, including Shell, BP, Esso and supermarket retailers Morrisons, Sainsbury’s, Tesco and Asda.

The RAC is urging the Competition and Markets Authority (CMA) - an independent non-ministerial Government department - to address what they term as the "glaring issues" related to fuel retailing.

Specifically, the RAC is asking the regulator, which is responsible for monitoring prices and the forthcoming PumpWatch price transparency scheme, to tackle "unfair retailer margins which lead to drivers getting a raw deal".

If major fuel retailers charged "fairer margins", several benefits could be shared with the drivers, said the RAC.

Benefits could include the end of the "postcode lottery" - where some companies charge different prices across locations. It could also reduce fuel prices in Britain to levels in Northern Ireland, where they are consistently 5p per litre cheaper.

Despite the CMA's concerns about retailer margins earlier this year, the average mark-ups for a litre of petrol and diesel currently stand at 9.5p and 17.5p respectively, according to the RAC - with the long-term average margin for both fuels being around 8.0p.

RAC fuel spokesman Simon Williams said: “Drivers are once again having to dig deep just to go about their daily lives.

“Our data shows petrol and diesel have now gone up 10p a litre so far this year on the back of further increases in April of 3p and 2p respectively. Some of this is down to the oil price and the pound-to-dollar exchange rate making wholesale petrol more expensive for retailers to buy. But unfortunately, it’s also very apparent that retailers are making massive margins on diesel.

“Worryingly, the CMA’s warning shot about higher retailer margins at the end of March appears to have fallen on deaf ears, meaning drivers are once again being seriously overcharged for diesel.”

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