Checking mileage consistency without diagnosing fraud
A mileage timeline is a way to notice questions. It is not a forensic test. A lower later reading can reflect an error, a unit mismatch, an instrument change or another explanation that needs evidence. A rising sequence can also contain inaccurate entries. Our organiser makes only the arithmetic visible: it sorts your dates, subtracts consecutive readings and flags decreases. It never retrieves official data, certifies genuine mileage or decides whether anyone has acted dishonestly.
Prepare a comparable set of readings
Open the official history yourself and check that its vehicle details match the car you are investigating. Copy each test date and odometer reading carefully. Keep miles and kilometres separate; numbers with different units must not be placed in a single comparison as though they measure the same thing. This organiser deliberately provides one unit for the whole timeline and does not convert between them.
A zero reading is a valid numerical entry, but it still needs context in the source record. Do not substitute zero for an unreadable or missing number. Likewise, do not estimate an intermediate reading to make a gap look complete. Keep uncertain entries out of the comparison until you can identify what the document actually says.
Understand exactly what the tool calculates
The organiser orders records from oldest to newest, regardless of the order you added them. Each change is the later reading minus the immediately preceding reading. Its overall change is the newest reading minus the oldest. Neither is a certified distance travelled, and the tool does not calculate annual use, compare a model average or estimate a vehicle’s value.
A negative difference triggers a lower-reading flag. Recheck both entries, their dates and their units before asking anyone to explain the underlying records. Identical readings are allowed on different dates and are not marked as reversals. The tool permits one entry per date; retain separate original same-day test documents rather than silently merging their contents.
- Remove and re-add an entry if you copied it incorrectly.
- Use Clear all entries before changing the timeline’s measurement unit.
- Download the TXT summary before refreshing if you want to retain your work.
Ask for evidence that addresses the discrepancy
If the source records themselves show a reduction, ask for dated service invoices, instrument-replacement paperwork or other documents relevant to the explanation given. A plausible story is not the same as evidence. Keep the unresolved question in your buying notes even if the vehicle appears tidy or a later reading rises again.
For a mileage correction, GOV.UK’s current guidance lists acceptable evidence such as an invoice, emissions printout, service receipt, service history or an MOT-centre job card. It says a dashboard photograph or MOT certificate cannot be used for this purpose. The evidence must identify the vehicle, show mileage and be dated within one day of the MOT test.
Use the official correction process where appropriate
The official record-mistake page distinguishes mileage issues from the last 28 days from older tests and directs users through the relevant process. It is not a way to remove a result or advisory that someone dislikes. For tests in Northern Ireland, GOV.UK says to contact DVA instead of using its online correction form.
Our TXT download is a user-entered working note, not correction evidence generated by a government service. It cannot resolve vehicle identity or demonstrate which explanation applies. If a discrepancy remains unresolved, pause and seek appropriate advice before purchasing. Guidance and evidence requirements were checked on 6 November 2026; follow the current official page when making a report.
Sources and further reading
Editorial review: 6 November 2026. This guide is general preparation information, not a technical assessment or confirmed service offer.