WheelsAI Research ยท Data & analysis
Mileage Fraud in UK Used Cars (2026): The Makes Most Affected and How to Check
Key finding
Approximately 3.4% of used cars in the UK show at least one mileage anomaly in their DVSA MOT records โ a drop in recorded mileage or an implausibly low annual increment between consecutive tests. The practice is not uniformly distributed: taxi-converted models and ex-hire vehicles show anomaly rates above 6%, while main-dealer-serviced premium brands cluster below 2%. Every anomaly is visible free of charge in the DVSA record before a buyer views the car.
What the DVSA record reveals that the listing description cannot
Every MOT test since 2005 records the odometer reading at the testing station. The tester cannot alter it. The sequence of readings across all tests tells a story: a car driven 12,000 miles a year should show roughly that increment between each annual test. When a car shows 62,000 miles one year then 58,500 the next โ or 82,000 miles followed by 'mileage not recorded', followed by 83,000 โ something has happened to the odometer. That's what clocking looks like in the data. The free DVSA history check is the fastest way to run this check before you ever contact a seller.
Mileage anomaly rates by use type
Not all cars carry the same risk. The pattern in the DVSA data reflects how different vehicles are actually used โ and which categories are most often returned to the used market via channels where mileage manipulation is harder to detect.
| Use type / category | Anomaly rate | Most common pattern |
|---|---|---|
| Ex-private hire / PCO (Toyota Prius, Honda Insight) | 6.8% | Implausibly low annual increment after de-licensing |
| Ex-hire / short-term rental fleet returns | 6.1% | Mileage drop between fleet return and private registration |
| Sub-ยฃ4,000 private sales | 5.2% | Mileage drop between consecutive tests |
| Mid-range independent dealer (ยฃ4kโยฃ10k) | 3.8% | Implausible annual increment |
| Mainstream franchise dealer returns | 2.1% | Recording gap (SORN not declared) |
| Main dealer (premium brand, ยฃ15k+) | 1.4% | Recording gap |
Source: DVSA MOT mileage records, WheelsAI analysis. Anomaly = mileage drop OR annual increment below 200 miles with no SORN declared. Makes with <3,000 tests excluded.
The three mileage anomaly patterns that matter most
The DVSA record does not label a car as "clocked." It shows what was recorded at each test. Buyers need to recognise the three patterns that indicate a problem:
- โThe mileage drop: recorded mileage goes backwards between consecutive tests. This is the clearest evidence of a tampered odometer โ there is no innocent explanation for a car having fewer miles at one MOT than at the previous one.
- โThe implausible increment: a car records 74,000 miles on one test and 74,800 on the next, twelve months later. Unless the car was SORN for all or most of that year, it has been driven far less than any normally used car. This is often a sign of a second odometer installed at a lower reading.
- โThe recording gap: the mileage is listed as "not recorded" on one or more tests. In isolation this is not damning โ older testers sometimes skipped the entry. But a gap immediately before a lower recorded mileage warrants a direct conversation with the seller.
How to check before you view โ for free
The entire DVSA test sequence for any UK-registered vehicle is available free at check.vehicle.service.gov.uk and via WheelsAI's free MOT history check. Pull up the record before you contact a seller. A car with a clean, consistent mileage curve โ rising smoothly year on year with no gaps or drops โ is a car that has almost certainly not had its odometer tampered with. A car with any of the three patterns above is either a fraud risk or a car with an explanation the seller needs to provide before you consider viewing.
Methodology & data source
WheelsAI analysed DVSA MOT mileage records for vehicles tested between January 2023 and April 2026. A 'mileage anomaly' is defined as: (1) any recorded mileage drop between consecutive tests; or (2) an annual increment below 200 miles where no SORN was declared in the intervening period. Data covers makes with at least 3,000 tests in the sample. Sample: approximately 94,000 vehicle test sequences. Mileage anomaly rate is expressed as a percentage of vehicles showing at least one qualifying event across their recorded test history.
Data date: May 2026 ยท Source: DVSA MOT mileage records, WheelsAI active UK listings (May 2026)
A clocked car is not a bargain โ it's a car with unknown mileage wearing the face of a lower-mileage one. The DVSA record makes this checkable for free in two minutes. Check every car's mileage history on WheelsAI before you book a viewing โ every listing includes the full DVSA MOT record, mileage at each test, and automatic flagging of any anomalies.
Frequently asked questions
Frequently asked questions
How common is mileage fraud on used cars in the UK?
WheelsAI data shows approximately 3.4% of tested vehicles have at least one mileage anomaly in their DVSA records. Risk is highest on ex-private-hire vehicles and sub-ยฃ4,000 private sales, and lowest on main-dealer-supplied premium stock.
Can I check if a used car has been clocked for free?
Yes. The DVSA publishes every MOT test mileage free at check.vehicle.service.gov.uk. WheelsAI wraps this data with automatic anomaly flagging. Enter the VRM and check the mileage column across all tests โ any drop or implausibly low annual increment is visible immediately.
What should I do if I find a mileage anomaly?
Ask the seller directly to explain the specific anomaly you found (give the dates and mileage readings). An innocent explanation โ SORN declaration, instrument cluster replacement with paperwork โ should come with documentation. If the seller cannot explain it or becomes evasive, walk away. The car's real mileage is genuinely unknown.
Does a mileage anomaly automatically mean a car has been clocked?
Not always. A 'mileage not recorded' entry is sometimes a tester omission. A genuine SORN period can explain low annual increments. An instrument cluster replacement, properly documented, can explain an apparent drop. What matters is whether the seller can produce documentation. Without it, treat the anomaly as a red flag.