Cost of diesel finally falls below £1 at major supermarkets.

Asda, Tesco and Morrisons have slashed the cost of diesel to just 97.7p a litre, the cheapest it’s been since the end of March 2009.

This is the maximum price motorists will pay at the supermarkets' forecourts across the UK.

Sainsbury's have not announced any price cuts as of yet.

Fuel prices should be falling faster

This is great for diesel drivers, but experts agree that fuel prices should be falling faster.

RAC fuel spokesman Simon Williams said: “We would have liked to have seen a cut sooner, and one that goes further, to more closely reflect the price retailers have been buying diesel for, but this is nevertheless good news for motorists".

He adds that wholesale prices are partly down to a huge supply of oil. It has dropped to $26 (£18.20) this week, 75% cheaper than it was 18 months ago.

The RAC believes that prices will fall another 1p-2p within the next fortnight.

Where to find diesel and petrol cheapest and pay less

Before you set off, check PetrolPrices.com and enter your postcode to see where fuel is cheapest near you.

You might want to consider a reward credit card that gives you cashback on fuel.

The AA FuelSave Credit Card gives you a stellar 4% cashback on fuel when you spend £500 a more in a month on any purchases. You'll bag free AA breakdown cover for your first year as part of the deal too.

With the Santander 123 Credit Card you’ll nab 3% cashback at all major petrol stations as well as on National Rail, TfL and Santander Cycles if you fancy leaving the car at home.

There are other ways at How to find the cheapest local petrol and diesel offers.

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