Wrong Mileage on Your MOT: How to Correct It

An incorrect mileage figure on your MOT certificate is one of the most damaging errors you can leave on the DVSA record. Future buyers see it on every history check, and it can be misread as 'clocking' even when innocent. The good news is correction is straightforward if you act fast. This step-by-step guide covers both the 28-day fast track and the formal DVSA route, plus the common causes. Run a free MOT history check right now to check your current entry.

Common causes of wrong MOT mileage

Mileage entry errors are surprisingly easy to make under time pressure. Identifying the cause helps you frame your correction request convincingly.

• Miles vs kilometres confusion (most common on imports and EVs)
• Finger slip on the keypad - extra zero or transposed digits
• Misreading a faded or partial-digital odometer
• Tester typing the previous test mileage by mistake
• Vehicle ID swapped with another car at a busy garage
• Recent odometer replacement not declared to tester

Step 1: Confirm the error via free MOT history check

Before doing anything else, run a free MOT history check on motcheckup.co.uk or the GOV.UK MOT service. View the latest entry and note the recorded mileage, the unit (miles or km), the test number and the testing station name. Take a screenshot for your records.

Compare to today's odometer reading and to the previous test entry. A genuine error usually shows a sudden jump or drop of thousands - not a small variation that could be normal driving between booking and test.

Be precise about the difference. A 3-mile gap between odometer and certificate is normal (the test itself involves a brake roller and a short road test). A 30,000-mile gap, a missing zero, or kilometres-treated-as-miles is clearly an error and worth pursuing for correction.

Step 2: Within 28 days - return to the test station

DVSA gives garages a 28-day window to amend mileage entries on their own authority through the MOT Testing System (MTS). If your test was within the last 28 days, this is the fastest route. The correction is free and usually takes 10 minutes.

Most garages handle this routinely - genuine errors do happen, and reputable testers want their site's data clean. Approach the conversation calmly. Use phrases like 'I noticed the mileage on your certificate doesn't match my odometer, can we correct it?' rather than accusations of negligence. The cooperative tone gets the issue resolved in one visit nine times out of ten.

• 1. Phone the test station first - ask for the manager and explain calmly
• 2. Bring the V5C logbook, your printed MOT certificate (if any) and the vehicle itself
• 3. The tester will photograph the odometer and amend the record on MTS
• 4. A new corrected certificate is issued; the old entry is overwritten in DVSA records
• 5. Run a fresh [free MOT history check](/mot-check) within an hour to confirm the correction is live

Step 3: After 28 days - the formal DVSA route

Once the 28-day window closes the test station can no longer self-amend. You must apply to DVSA directly. Email csccomplaints@dvsa.gov.uk with subject line 'MOT mileage correction request' and include the items listed below. DVSA usually responds within 10 working days.

DVSA will not amend a record without supporting evidence. The strongest evidence is a clear photograph of the odometer with a date-stamped newspaper or smartphone clock visible, plus the V5C and any service records bracketing the disputed test. Weaker evidence (your statement alone) is unlikely to result in a correction.

• Vehicle registration mark (VRM)
• MOT test number (12 digits, from the certificate or history check)
• Date of the test in question
• The wrong mileage as recorded and the correct figure with unit (miles / km)
• Photo of the current odometer (showing date or recent reading)
• Scan or photo of the V5C logbook (front page)
• Brief explanation of what you believe caused the error
• Any supporting documents (service invoice, prior MOT, GAP insurance reading)

Step 4: Follow up if not resolved

If you receive no response within 15 working days, escalate via the DVSA Customer Service Centre on 0300 123 9000 (open 0730-1800 weekdays). Quote your original email reference. Persistent unresolved cases can be raised with the Independent Complaints Assessor for DVSA, free of charge.

In rare disputed cases (the test station insists their entry is correct), you can request a formal investigation. DVSA may compare the disputed reading against your previous and subsequent MOT entries, service invoices and ECU mileage data extracted by a dealer. The process can take 30-60 days but corrections are issued where evidence supports your version.

If the issue cannot be resolved through DVSA, the Independent Complaints Assessor (ICA) for the agency provides a free third-party review service. Submit your full file and the ICA will examine whether DVSA's process was fair. The ICA can recommend amendment but cannot order DVSA to amend - the recommendation is non-binding but is usually followed.

Why getting it corrected matters

An incorrect mileage entry stays in the DVSA history forever unless corrected. Every future buyer who runs a free MOT history check will see the discrepancy. AI-powered services flag mileage anomalies as 'possible clocking' - even genuine errors can wipe £500-2,000 off a resale value.

Insurers also access MOT mileage data when assessing claims and total-loss valuations. A car recorded at falsely high mileage can be valued lower; a falsely low entry can prompt fraud investigation. Always correct - never ignore.

Preventing wrong mileage in future

When you drop the car off, write the current odometer reading on the booking sheet in clear figures and note the unit. Many garages now ask you to sign a mileage declaration; check it before you leave. If your speedometer can switch between km/h and mph, set it to mph for a UK MOT to avoid km-mode entry errors.

Run a free MOT history check the same day as your test to verify the entry while you can still walk back into the garage. The faster you spot an error, the cheaper and easier the correction route.

If you sell vehicles regularly or run a small fleet, build mileage verification into your end-of-test routine. A 30-second check across the booking sheet, the odometer photo and the GOV.UK record catches errors before they affect resale. Several fleet management platforms now automate this and flag mismatches automatically.

What an uncorrected error looks like to a buyer

When a future buyer runs a free MOT history check on your registration, they see every recorded mileage in chronological order. A single anomalous figure - say, 80,000 miles between two tests that bracket the same month - immediately reads as suspicious. AI-powered checking tools highlight the gap with a red flag and a 'possible mileage anomaly' label that no buyer will ignore.

Even if the underlying explanation is innocent (a tester finger-slip), buyers will assume the worst. Insurance loss adjusters apply the same logic when valuing a written-off car. Resolving the error promptly through the 28-day or formal DVSA route is therefore not optional housekeeping - it directly protects the asset value. The cost of action is zero; the cost of inaction can be hundreds or thousands of pounds when you come to sell.

Frequently Asked Questions

Can I correct wrong MOT mileage online?

Not directly. DVSA does not have a public self-service portal for mileage correction. The fastest route is the test station within 28 days; after that, email csccomplaints@dvsa.gov.uk with evidence.

How long does DVSA take to correct an MOT mileage error?

Within 28 days at the test station, the change is live on the same visit. Via the formal DVSA email route, expect 10-15 working days for a response and another 5-10 days for the database update.

Will a wrong mileage on my MOT affect resale value?

Yes, often significantly. A figure that looks like clocking can knock £500-£2,000 off a private sale. Always correct visible errors before listing the car.

What if the test station refuses to amend the mileage?

Move straight to the DVSA route via csccomplaints@dvsa.gov.uk. Include all evidence and note that the station declined. DVSA can override the station record where evidence supports correction.

Is wrong mileage on an MOT considered fraud?

Honest entry errors are not fraud. Deliberate clocking - winding the odometer back to inflate value - is fraud under the Fraud Act 2006. Correcting an honest error promptly through DVSA shows good faith and prevents misinterpretation later.

Catch a wrong-mileage MOT entry within 28 days for a free fix at the test station - and run a free MOT history check today to spot any error before it costs you on resale.