The petition calls for fuel duty and VAT on fuel to be slashed by 40 per cent for two years. Fuel retailers have been accused of failing to fully pass on the 5p per litre cut in fuel duty introduced by Chancellor Rishi Sunak in last week's Spring Statement.

In theory, that cut represented a saving of 6p per litre because of its impact on VAT. However, the average price of a litre of petrol at UK forecourts has fallen by just 3.8p per litre.

Figures from data firm Experian Catalist show the average price per litre on Tuesday was 163.5p, compared with 167.3p on 22 March. The average price of diesel fell by 2.2p per litre over the same period, from 179.7p to 177.5p.

Rod Dennis, RAC fuel spokesman, said: “If the Treasury wasn’t aware of the strength of feeling when it comes to fuel prices before the Spring Statement, it certainly will be now. With fuel prices still some way off reflecting the full duty cut, it’s understandable that so many drivers remain...