How to Report a Clocked Car in the UK

What Is Mileage Clocking?

Mileage clocking — also called odometer tampering or mileage fraud — is the deliberate act of altering a vehicle's odometer to show a lower mileage than the car has actually covered. The goal is to make the car appear less used than it really is, which inflates its value and makes it easier to sell at a higher price.

On older cars with mechanical odometers, clocking was done by physically winding back the dials. On modern vehicles with digital odometers, specialised electronic tools are used to reprogram the mileage figure stored in the car's ECU and instrument cluster.

Clocking is not a niche problem. Industry estimates suggest that as many as one in twelve used cars sold in the UK may have a clocked or inconsistent mileage reading. That represents hundreds of thousands of vehicles on the road with false odometer readings.

Why Mileage Clocking Is Illegal

Clocking a car's mileage with the intent to deceive a buyer is a criminal offence in the UK. It falls under several pieces of legislation:

• Consumer Protection from Unfair Trading Regulations 2008 — selling a clocked car is a misleading commercial practice, punishable by an unlimited fine and up to two years' imprisonment.
• Fraud Act 2006 — deliberately misrepresenting mileage to gain a financial advantage constitutes fraud.
• Consumer Rights Act 2015 — a clocked car is not "as described," giving the buyer the right to reject the vehicle, claim a repair, or demand a refund.

It is important to note that clocking itself — the physical act of changing the odometer — is not illegal in isolation. For example, a dashboard replacement might require recalibrating the odometer. What is illegal is selling a car with a clocked odometer without disclosing the true mileage to the buyer. The offence is the deception, not the mechanical act.

The Impact on Buyers

Buying a clocked car has serious consequences:

• You overpay — the car is worth less than you thought because it has done more miles.
• Safety risks — components wear at a rate tied to mileage. A car showing 40,000 miles that has actually done 100,000 may have worn brakes, suspension, tyres, and engine components that should have been serviced or replaced.
• Higher running costs — more maintenance and repairs than expected for the apparent mileage.
• Reduced resale value — if the true mileage is ever discovered, the car's value drops significantly.
• Insurance issues — an inaccurate mileage could affect your insurance cover or invalidate a claim.

Signs a Car May Be Clocked

Before you can report a clocked car, you need to suspect — and ideally confirm — that clocking has occurred. Here are the warning signs to look for:

Inconsistent Wear for the Mileage

• Steering wheel, gear knob, and pedal rubbers — a car with 30,000 miles should have minimal wear on these items. Heavy wear suggests much higher mileage.
• Driver's seat — sagging, bolster wear, or cracked leather on a supposedly low-mileage car is a red flag.
• Carpet and floor mats — excessive wear under the pedals that does not match the odometer reading.
• Brake discs and pads — visually worn brakes on a "low-mileage" car suggest more use than claimed.

Suspicious Documentation

• Gaps in the service history — missing stamps or long gaps between services may indicate periods of high mileage that the seller wants to hide.
• Service book entries that do not match the mileage progression — look at each service stamp and check the mileage goes up consistently. A jump followed by a drop is a clear sign of clocking.
• No service history at all — a complete absence of records makes it impossible to verify the car's mileage.

Pricing and Seller Behaviour

• Below-market pricing — a car priced significantly below similar models could be compensating for hidden issues.
• Reluctance to allow an inspection — a seller who discourages independent checks or rushes the sale may be hiding something.
• "Cash only" or pressure to complete quickly — legitimate sellers rarely insist on immediate cash sales.

How to Confirm a Mileage Discrepancy

Suspicion is not enough. To report a clocked car, you need evidence. Here is how to confirm the discrepancy.

Check the MOT History

Every car over three years old in the UK requires an annual MOT. The mileage is recorded at each MOT test and stored on the DVLA's database. You can check this for free at gov.uk/check-mot-history.

Look at the mileage figures across multiple years. They should increase consistently. For example:

Year	MOT mileage
2020	42,000
2021	54,000
2022	66,000
2023	45,000

In this example, the mileage dropped from 66,000 to 45,000 between 2022 and 2023. This is a clear sign that the odometer has been wound back.

Run a Vehicle History Check

A comprehensive vehicle check — like those offered by Check A Car — queries multiple data sources including:

• MOT mileage records from the DVSA
• Insurance and finance records that may include mileage data
• Previous advert listings where the car's mileage was stated
• Fleet and lease return data from commercial operators

A full check can identify mileage discrepancies that a simple MOT history check might miss, especially if the clocking was done between MOT dates.

Inspect the Service History

If the car has a stamped service book, cross-reference the mileage at each service with the MOT records. Discrepancies between the two are strong evidence of tampering.

Also check whether the service book looks genuine — are the stamps consistent? Are the entries written in different handwriting (as you would expect from different garages)? A forged service book with identical handwriting across all entries is another red flag.

Evidence to Gather Before Reporting

Before making a report, compile as much evidence as possible. The stronger your evidence, the more likely it is that action will be taken.

MOT Records

Download or screenshot the MOT history from gov.uk showing the mileage progression. Highlight the point where the mileage drops or does not increase as expected.

Service History

Photograph every page of the service book, including the mileage entries at each service. If the mileage in the service book contradicts the MOT records, this is powerful evidence.

Vehicle Check Report

Run a full vehicle check and save the results. If the check flags a mileage discrepancy or anomaly, include this in your report.

The Advertisement

If you saved the original listing (screenshots, printouts, or archived web pages), this shows the mileage the seller claimed at the time of sale. If the claimed mileage is lower than historical records show, this is direct evidence of misrepresentation.

Photographs of the Car

Take photos showing inconsistent wear — worn pedals, seat wear, steering wheel deterioration, or brake disc wear that does not match the claimed mileage.

Communication Records

Save all text messages, emails, WhatsApp messages, and other communications with the seller. If the seller made specific claims about the mileage ("genuine low mileage," "full history to back it up," etc.), these statements are evidence.

Receipt or Invoice

Keep the purchase receipt showing the date of sale, the price paid, and the seller's details. This proves the transaction took place and establishes your loss.

Who to Report a Clocked Car To

There are several organisations you can and should report mileage clocking to. Each serves a different purpose.

Trading Standards

Trading Standards is the primary enforcement body for consumer protection in the UK. They investigate misleading commercial practices, including mileage fraud.

• How to report: Contact your local Trading Standards through the Citizens Advice consumer helpline on 0808 223 1133, or report online through the Citizens Advice website.
• What they do: Trading Standards can investigate the seller, issue warnings, and in serious cases, prosecute. If the seller is a dealer or trades regularly, Trading Standards can take enforcement action to prevent them from defrauding other buyers.
• What to include: Provide all your evidence — MOT records, vehicle check results, photos, communications, and the purchase receipt.

Action Fraud

Action Fraud is the UK's national fraud and cybercrime reporting centre. Mileage clocking is fraud, and Action Fraud records these reports and passes them to the relevant police forces for investigation.

• How to report: Online at actionfraud.police.uk or by calling 0300 123 2040.
• What they do: Action Fraud logs the crime and assigns a reference number. They pass cases to the National Fraud Intelligence Bureau (NFIB), which analyses patterns and refers actionable cases to local police forces.
• What to include: Details of the seller, the vehicle, the mileage discrepancy, and all supporting evidence.

Police (In Serious Cases)

In most cases, Trading Standards and Action Fraud are the appropriate bodies. However, you should also consider reporting directly to the police if:

• The seller is a known repeat offender clocking multiple vehicles
• The seller used a false identity or fake documentation
• The amount of financial loss is significant
• You suspect the vehicle is also stolen or has other criminal connections

Contact your local police on 101 or visit a police station to make a report. Provide all your evidence and reference any reports already made to Trading Standards or Action Fraud.

Steps to Report the Seller

Follow this process to make your report as effective as possible:

1. Compile Your Evidence

Gather all the evidence listed above — MOT records, vehicle check results, photos, communications, service book, and receipt. Organise it clearly so that anyone reviewing your case can quickly understand the discrepancy.

2. Contact the Seller

Before reporting, it is worth contacting the seller directly — especially if they are a dealer. Put your complaint in writing (email or recorded delivery letter). State:

• The mileage discrepancy you have discovered
• The evidence supporting your claim
• What you want (a refund, price reduction, or resolution)
• A reasonable deadline to respond (14 days is standard)

If the seller is a dealer, this step also starts the formal complaint process under the Consumer Rights Act.

3. Report to Citizens Advice / Trading Standards

Call 0808 223 1133 or report online. Citizens Advice will log your complaint and refer it to Trading Standards in the seller's local area.

4. Report to Action Fraud

File a report online or by phone. You will receive a crime reference number — keep this for your records and share it with your insurer.

5. Notify Your Insurer

If the mileage is significantly different from what you declared when you took out your insurance, contact your insurer to update the details. An incorrect mileage could affect your cover.

6. Consider Legal Action

If the seller refuses to cooperate, you may need to pursue the matter through the courts (see your rights below).

What Happens After a Report

After you report a clocked car:

• Trading Standards may investigate the seller. If they find a pattern of clocking, they can prosecute under consumer protection law. You may be asked to provide a witness statement.
• Action Fraud will log the case. If sufficient reports are received about the same seller, this increases the likelihood of police investigation.
• Police may investigate if the case involves significant fraud or other criminal activity.

Investigations can take time — weeks or months. Follow up periodically and keep all your evidence secure.

Your Rights if You Bought a Clocked Car

From a Dealer

If you bought the car from a dealer (or anyone acting as a trader), the Consumer Rights Act 2015 gives you strong protections. A clocked car is not "as described," which means:

• Within 30 days: You can reject the car and claim a full refund.
• 30 days to 6 months: The dealer must be given one chance to repair or replace. If that fails, you can reject and claim a refund (minus a deduction for use).
• After 6 months: You need to prove the mileage was misrepresented at the time of sale (your evidence package will do this).

You may also have a claim under Section 75 of the Consumer Credit Act if you bought the car on finance — the finance company is jointly liable.

From a Private Seller

If you bought from a private seller, your rights are more limited. The sale is governed by the Misrepresentation Act 1967. If the seller explicitly stated the mileage was genuine (verbally or in the advert), you may have a claim for misrepresentation.

You can:

• Seek to rescind the contract (return the car for a refund)
• Claim damages for the difference between what you paid and the car's true value

For private sales, pursuing the matter through Small Claims Court is often the most practical route. File a claim at moneyclaims.service.gov.uk for claims up to £10,000.

How to Avoid Clocked Cars in the Future

Prevention is always better than cure. Here is how to protect yourself:

• Run a vehicle check before buying any used car. A full mileage check will flag discrepancies from MOT records, previous adverts, and other data sources.
• Check the free MOT history at gov.uk/check-mot-history — look for consistent mileage increases year on year.
• Inspect the car's physical condition — does the wear match the claimed mileage?
• Cross-reference the service history with MOT records.
• Be wary of too-good-to-be-true prices — if a low-mileage car is priced well below market value, ask why.
• Ask for the V5C and verify the details match the car and the seller.
• Buy from reputable sources — established dealers are less likely to sell clocked cars (and offer better legal protections if they do).
• Trust your instincts — if something feels wrong about the car or the seller, walk away. There are always other cars.