In recent months, car manufacturers and even governments have turned against diesel-engined cars. Now, it seems, buyers have too, as the average value of the country's most popular diesels has fallen by an average of 5.7 per cent between the first and third quarter of 2017. That's put the average price down from £4,581 to £4,318.
Data from vehicle valuation site Motorway.co.uk shows that the worst affected cars were Vauxhall Corsa diesels. They saw a hit of over 26 per cent, with values falling from £2,160 to £1,592. The Corsa's larger brother, the Astra, wasn't far behind either – values fell by 17.7 per cent from £2,949 to £2,426.
But it's not just Vauxhalls affected. Popular premium diesels took a hit too, with cars like the Audi A3 dropping by 11.3 per cent.
The news comes after the UK Government announced plans to phase out all pure petrol and diesel engined cars by the year 2040. Car manufacturers have taken note, and many have announced scrappage schemes encouraging customers to trade in older, polluting diesels in exchange for a discount off a new model.
But some car owners should be happy with the news. Demand for used petrol cars has increased by five per cent, further showing where consumer's loyalties are shifting.
Alex Buttle, director of Motorway.co.uk told The Telegraph: "Diesel cars are really starting to look like white elephants. "We are now seeing savvy motorists choosing petrol, electric or hybrid used cars over diesel, and that's already reflected in the value of second hand petrol vehicles starting to rise."
"That said, for those purely after cheap deals, it is definitely 'bargain bucket bonanza' time in the used diesel market."