Mileage & Clocking Check Explained: What It Shows and Why It Matters

Mileage is the number that sets a used car’s price more than any other. A car showing 60,000 miles is worth more than the same car showing 110,000, and it is expected to need less work. That makes the odometer a target. Winding it back — clocking — turns a tired car into a fresh-looking one, and the buyer pays for miles that were driven by someone else.

The Mileage & Clocking Check answers one question before you hand over any money: do the recorded mileage readings for this car rise in order, or does one of them go backwards? This guide explains what the check shows, where the readings come from, what it cannot tell you, and what to do if the readings do not add up.

1. What the Mileage & Clocking Check Is

It is a single paid report inside the SortedCars Paid Check builder. You enter the registration, tick the check, and the report is built while you wait and shown on screen. It costs £2.99 on its own.

You will find it on the Provenance tab, in the Red flags group, next to the Outstanding Finance Check and the Stolen Vehicle Check. The card asks “Has the odometer been wound back?” The “In Full Provenance” badge means the same check is also included inside the Full Provenance Report.

2. What the Report Shows

The finished report opens with the vehicle details from the DVLA, then the six Experian identity sections, and ends with section 8, the Mileage & Clocking Check. The header shows the coverage as “1 paid report + DVLA vehicle details”, the source as “DVLA · Experian”, and a “NO DATA GUARANTEE” badge. Every screenshot below is sample data from our test environment: the registration is an official DVLA test number and the reading, date and source are fixed test records, not a real car.

The section opens with a verdict. In the sample it reads “1 reading — no anomalies found”, with the explanation that recorded odometer readings rise consistently over time, with no sign of the clock being wound back. On a real car the verdict counts every reading held and flags any reading that is lower than an earlier one as an anomaly. Below the verdict is one row per recorded reading:

A real car with a few years of history will show many rows: readings taken at MOT tests, at keeper changes, and from the finance, insurance and trade records that Experian holds. The more rows there are, the harder it is for a wound-back odometer to hide between them. The section ends with the line “Data provided by Experian”.

3. Why It Matters

Clocking costs you twice. You pay a higher price for a lower mileage, and you inherit the wear of the real mileage: the clutch, the suspension, the timing chain and the cambelt are all where the real miles left them. Services that were due at the true mileage may never have been done.

Misleading a buyer about mileage is a criminal offence under UK consumer protection law. That is a route to take after the event. A dated mileage check, done before you pay, is the route that avoids the event.

The MOT part of the picture is free. The MOT history at gov.uk/check-mot-history lists the mileage recorded at each test, and our guide on reading MOT history before buying shows what to look for in it. The free SortedCars Car Check includes that MOT history and a mileage analysis. What the paid check adds is the readings from other sources — keeper changes and the records Experian holds — and the anomaly verdict across all of them. A clocked car that has been given a clean run of MOT readings can still be caught by a reading from somewhere else.

4. Where the Data Comes From

The mileage data in this check is provided by Experian. Readings are gathered from MOT tests, keeper changes and the finance, insurance and trade records that Experian holds, and the check reads what is held for the registration you enter. The vehicle details at the top of the report come from the DVLA.

SortedCars does not hold or create mileage records. We ask Experian for the readings on the car at the moment you build the report and show you every value we receive.

5. What It Cannot Tell You

An honest check comes with honest limits.

• It only shows readings that were recorded. A car that has been clocked between two recorded readings, and driven fewer miles than the gap, will not trip the verdict. The rows are evidence, not proof.
• It cannot see the odometer today. The check shows what was recorded on past dates. Compare the last row with the mileage on the dashboard when you view the car.
• A wrong reading is not always clocking. An MOT tester can mistype a figure, and a later correct reading will look like a drop. One odd row deserves a question, not a verdict.
• It is a snapshot. The result is correct at the moment the report is built. Run it close to the day you pay.
• It is not a finance, stolen or write-off check. Those are separate reports on the same page. The Full Provenance Report bundles them together with the mileage check for £5.99.

6. What To Do If the Readings Do Not Add Up

An anomaly on the report is a reason to stop and ask, not yet a reason to walk away. Work through it in order.

Step 1 — Compare the report with the car. Note the dashboard mileage. It should be higher than the last recorded row. Then look for the physical signs: a steering wheel, pedal rubbers, gear knob and driver’s seat bolster that are worn well beyond what the mileage suggests.

Step 2 — Compare the report with the paperwork. Service stamps and invoices carry a mileage. Put them in the same date order as the report rows. Stamps that do not fit the sequence are as telling as a dropped reading.

Step 3 — Ask the seller. Name the two readings that conflict and the dates. A genuine explanation — a replaced instrument cluster, a known MOT typing error — can usually be backed with a receipt or a corrected certificate. An explanation with nothing behind it is not an explanation.

Step 4 — Decide on the true mileage, not the displayed one. If you go ahead, price the car on the highest reading on record, and budget for the services that were due at that mileage.

If you have already bought a car and believe the mileage was deliberately misrepresented, report it to Action Fraud. For advice on your rights against the seller, Citizens Advice is the free route.

7. Price and Where It Sits

The check is not sold inside a Car Check Pack on its own, but the Full Provenance Report that contains it is inside the packs from the Essential Pack (£5.99) upwards. Prices are as shown on the site at the time of writing; the page price is always the price you pay.

Final Thoughts

Mileage is the easiest number on a car to change and the hardest to check by eye. The check that puts the recorded readings in date order costs £2.99 and is built while you wait. Read the rows, read the gaps, compare the last row with the dashboard, and ask about anything that does not fit.

Start with the free MOT history, add the paid check when you are serious about a car, and keep the dated report. If the readings rise in order and match the car in front of you, that is one less thing to worry about.

This guide provides general information and is not legal advice. Mileage data in the Mileage & Clocking Check is provided by Experian and shows odometer readings recorded from MOT tests, keeper changes and the records Experian holds at the time the report is built; it cannot show mileage that was never recorded, and a single low reading can be a recording error rather than clocking. If you believe a seller has misrepresented a car’s mileage, report it to Action Fraud. SortedCars resells the data named above and has no other connection with the providers, garages or insurers mentioned.