Instrument cluster change - mileage discrepancy

Aylesbury_Duck

I've had a glitching instrument cluster for a few weeks, so that the digital speed and rev counter intermittently disappear.  After a bit of fiddling around I can get it working but it still fails occasionally, so I've sourced a replacement cluster from eBay and fitted it.  Works perfectly but it's showing the wrong mileage and having checked, the cluster holds the mileage rather than the ECU so the options are to leave it or get it re-programmed somehow.  I've been lucky in that the difference is fairly small - my car's done 76k miles and the new unit is showing 72k.  The last mileage recorded was at the MOT a year ago - 71k miles, so I'm not into negative mileage territory.  If it were substantially over or under the old mileage I would have informed my insurer (and presumably DVLA?) so as not to cause problems with MOT or insurance.  Is it worth doing so, since the discrepancy is so small?  I have no intention of getting rid of the car - I run bangernomics so this car will end up scrapped or part-ex'd at some point.  It's 15 years old and only worth a few hundred quid so "saving" 4,000 miles won't change the value.

societys_child

I wouldn't worry, many of us have done far less mileage this year and 4k miles on a 15 yr old car is neither here nor there.

chrisw

Another vote for just leaving it, it won't make any difference to anyone and there's no intention to deceive.

AdrianC

Don't sweat it.

Some years ago (since computerised MOTs), I had a car with a faulty odometer. For three years, the odometer reading was exactly the same. Then I replaced the dash. The next test had 60k fewer miles on it. Nobody even raised an eyebrow. The tester gets asked by his computer if the reading he enters is correct, and he simply says "yep". Because it is.

Scrapit

you can get "milage corrections" which is industry talk for clocking from people that do remaps and similar. But I wouldn't bother.

MinuteNoodles

What car is it? If it's a Ford the free FORSCAN software can update the mileage on the speedo however it will only allow you to input a mileage higher than that already displayed to prevent clocking.

Personally I'm with others that at 15 years old a 4000 mile discrepancy isn't really an issue. If you feel overly guilty about it when you come to sell it give the car a service so at least whoever buys it doesn't end up potentially going 4000 miles over a service interval.

Geodark

You can update Vauxhall with opcom / vauxcom if its one of them - whats the year / model? Mileage is held in two places now usually - dash and ecu (well, both in the ECU but you know what I mean - display mileage and actual mileage)