Martin Lewis has warned the millions of people who own a Tesco Clubcard to use the retailer's petrol stations as often as possible between now and June 14.
This is because a huge change is set to come into force, which will impact the number of Clubcard points you earn at forecourts, MyLondon reports.
From the middle of June, the loyalty scheme will offer one point for every two litres of fuel purchased instead of one point for every £2 spent on fuel. Due to the current average price of two litres of unleaded (£2.90 according to RAC) and diesel (£3.20), customers will have to spend more on fuel to earn the same amount of Clubcard points, assuming fuel prices remain above £1 per litre until the change.