I was thinking exactly the same. The modest difference in mileage would not be worth the risk of getting caught, especially on quite an old car.

It makes no logical sense whatsoever for anyone to go to the trouble of clocking a Cat-S Insignia by 15k miles.

Why not? I know someone who used to clock their car by 5K or so every MOT. Looked a little better when theycame to flog it, but I suspect close inspection would have revealed tiny scratches.

Or even a label inside 'Oh no, not again!'

Edited by bathtub tom on 28/10/2022 at 15:29

It makes no sense because as has been said earlier, the difference in value between a Cat S Insignia with 117k miles and a Cat S Insignia with 132k miles would be virtually nothing.

It makes no sense to clock a 132k car back 15k miles, but I think some dodgy traders are so into the habit of clocking they just do it anyway.

Quite a few years back now, I traded in a 8 year old, 118k mileage Octavia which had about 6 months MOT on to a main dealer. Not surprisingly given it was worth next to nothing, they moved it on rather than re-marketing it and it appeared at a dodgy looking "under the arches" used dealer not far away with about 112k miles on the clock. This was about 500 miles more than what was recorded at the previous MOT. It had definitely been changed as they included a photo of the odometer in the advert.

I'd also rather pointlessly had the timing belt changed at a service around the time of that MOT, and the garage had written "belt change and waterpump at 112k miles" and the date on the underside of the bonnet with a paint pen.

It can't have made any difference at all to the value of the car taking so few miles off, but the dodgy dealer must have decided it wasn't worth risking winding the clock back further given there would have been two lots of evidence it had been clocked!!