Martin Lewis' 10-second tip can instantly reduce the price of your petrol or diesel

Money Saving Expert Martin Lewis says anyone who drives should follow a simple piece of advice to instantly reduce the price of petrol and diesel. His tip proved so popular, it caused an entire website to crash.

With petrol and diesel prices now rocketing above £2 in some areas, drivers are desperate to pay as little as possible for their fuel. Martin's come up with a solution which can immediately reduce how much you're spending when you top up, and it only takes seconds to do.

Tweeting to his followers, he said: "Find the nearest cheapest petrol station near you... Petrolprices.com." The website allows people to enter their postcode and find the nearest fuel station in the area. You can specify the search for specific types of fuel such as diesel and premium fuels.

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Once you're signed up it takes seconds to use. So it's well worth trying.

First you must enter your details to sign up. Some people react with shock at this with Missy writing on Twitter: "Why do I need to give my information and sign up?" To which Martin Lewis replied: "Because they want to build a database in return for letting you access theirs!"

The average cost of a full tank of petrol for a typical 55-litre family car exceeded £100 for the first time, according to figures from data firm Experian Catalist released last week - hitting £100.27 today, says KentLive.

Yesterday saw the first few petrol stations hit the £2 per litre mark, with one in Gateshead hitting 202.9p per litre - a situation one angry motorist described as "totally insane". The wholesale oil price rose by around 6% in the last week, and shows no signs of slowing down.

And yesterday's jump,