Resolving mileage discrepancies before a vehicle sale
- Topic
- Vehicles and fleets
- Reading time
- 3 minutes
- Last reviewed
On this page
If the displayed mileage conflicts with a service invoice or MOT entry, investigate the difference before publishing a firm mileage claim. A discrepancy may have an explanation, but the explanation needs evidence. Do not silently choose the figure that makes the vehicle look better.
Start with the official MOT history and the vehicle's own records. Check that every document belongs to the correct registration and vehicle identity.
Build a chronology rather than an average
| Record | Date | Reading and units | Vehicle reference | Question to resolve |
|---|---|---|---|---|
| Current display | Date photographed | Exactly as shown | Confirmed identity | Is any replacement history known? |
| MOT entry | Test date | As recorded | Registration checked | Does it agree with nearby records? |
| Service invoice | Invoice or work date | As stated | Registration or other reference | Is it a transcription or unit issue? |
| Repair record | Work date | Any relevant reading | Identity checked | Was an instrument replaced? |
Keep miles and kilometres explicit. Do not convert a value without recording the original units and the basis for the conversion. Do not average inconsistent readings; that creates a new number with no evidential meaning.
Ask the source of the disputed record
Where an entry appears wrong, contact the relevant record issuer or follow the applicable official correction route. Keep the enquiry and response. A colleague's belief that someone typed an extra digit is not a corrected record.
If an instrument was replaced, collect the available work records. They may explain why the display changed, but the description still needs to distinguish the current display from any supported total distance. Seek appropriate advice before making a definitive claim where the history remains unclear.
The MOT description guide explains how to keep test evidence within its limits. GOV.UK's used-vehicle checks also direct buyers to compare the record with the information supplied.
Use precise uncertainty
Useful wording identifies the inconsistency and the evidence available. For a fictional example: "Current display photographed at 82,410 miles; a previous service invoice records a different figure. The discrepancy has not been resolved." The example is not a model description to copy without checking the actual facts.
Avoid a broad phrase such as "mileage believed correct" when the seller knows a specific conflict exists. Equally, a discrepancy alone is not enough to accuse someone of deliberate alteration.
If the discrepancy arose around known damage or a repair, link the relevant accident-history records. Keep the chronology coherent across both files.
For a high-mileage van, present condition evidence without using it to dismiss a mileage uncertainty. They are separate questions.
Supply UK Auction Group with the chronology and unresolved point before the sale description is agreed. A transparent file allows the issue to be considered properly instead of discovered during collection.
Sources
- GOV.UK MOT history service Checked
- GOV.UK used-vehicle checks Checked
This guide gives general information. Equipment-specific, legal, tax and safety decisions may need a qualified adviser or competent specialist. The guides do not promise sale prices, fees or results.