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Car Clocking

It's estimated that 2.5 million vehicles across the UK have had their mileage tampered with. While you might assume car clocking is a thing of the past, it remains an extremely prevalent and dangerous issue for road users.

It works by plugging a computer into a car while manually altering the odometer reading manually. A mileage blocker is a device that plugs into the car that suppresses the signal to the odometer, so while the car is doing mileage, it's never actually being recorded.

While it can be difficult to spot, there are some things you can do to check for foul play.

Top Tips:

  • The first thing any buyer should do is make sure that the service history is either visible online, or can be viewed physically in a book. To check the online MOT history, .
  • You also want to make sure that you're checking the Vehicle Identification Number ("VIN") - sometimes referred to as the chassis number of the car - against the Vehicle Log Book ("V5C"), the car's registration document.
  • This is the unique 17-character code used to identify a vehicle. You can find the VIN/chassis number on your vehicle registration certificate, dashboard (driver's side near the windshield), and sometimes on the driver's side doorjamb or under the hood.

  • Physically, you can look for signs of crash damage, or unusual wear and tear.
  • Look closely at the paint to check for any differences across the car - ask yourself whether the wing mirrors match the bonnet? Do the doors match the wing mirrors?
  • Check the interior too - have the seats started to sag, or are they becoming a bit threadbare?
  • If the steering wheel appears polished and shiny, that's a red flag! It should actually be matte.
  • Finally, check the dashboard for lights - if there's an orange light it needs to be looked at urgently. If there's a red light, then that means the car should not be driven.