Free MOT History Checker UK

Reading an MOT Test Record: Dangerous, Major, Minor & Advisory

Since May 2018, the DVSA reformed how MOT defects are classified. Every fault found during a test is placed into one of four categories, and understanding the difference is essential when reading a vehicle's MOT history. The category determines whether the car passed, failed, or passed with a warning — and it tells you how urgently a defect needs fixing.

Mileage Verification: How MOT History Catches Clocking

Every MOT test records the vehicle's odometer reading, and that reading is lodged in the DVSA database — it cannot be edited or removed after the test. This makes the MOT mileage record the single most reliable way to detect clocking (odometer fraud), where a seller winds back the mileage to inflate the car's value.

How to read mileage progression

Recurring Failure Patterns: What They Reveal About Reliability

A single MOT failure is normal — every car will fail at some point. But a pattern of failures on the same category across multiple tests is the most reliable indicator of underlying mechanical problems. The DVSA groups MOT defects into categories, and recurring failures in the same group tell a story.

Before buying, check the car's full MOT history for recurring failures in the same category. A car that fails on brakes every two years may simply have a heavy-footed driver — or it may have a sticky caliper or warped disc that no one has properly diagnosed. See our detailed guides on brake failures, emissions failures, tyre failures and suspension failures for what causes each and how to prevent them.

Using MOT History When Buying: Dealer, Private & Auction

Where you buy changes how you should use the MOT history. Here's how to approach each common channel.

Buying from a dealer

Dealers must provide cars "of satisfactory quality" under the Consumer Rights Act 2015. Demand the MOT history before viewing — a reputable dealer will have it ready. If the history shows recurring Major failures or a recent Dangerous defect that hasn't been repaired, the car may not meet the "satisfactory quality" threshold. See our used car buying guide.

Buying privately

Private sales carry minimal consumer protection — "sold as seen" applies. This is where MOT history matters most. Run the registration through MotR's MOT history checker before viewing. If the seller refuses to give you the registration number, treat it as a red flag and walk away. Cross-reference the odometer against the most recent MOT mileage reading.

Buying at auction

Auctions are high-risk. You usually can't test drive, and viewing time is limited. Bring a mobile data connection and run the MOT history on the forecourt. Set a hard maximum bid based on what the history reveals — recurring failures or clocking should reduce your bid significantly or eliminate the car from your shortlist.

MOT History vs a Full Vehicle History Check (HPI)

MOT history and a paid HPI-style check reveal different things. They're complementary — not alternatives. The MOT history (free via MotR) shows the car's mechanical and safety record. A paid check (HPI, Experian, Total Car Check) reveals financial and legal status — outstanding finance, write-off category, stolen status, and plate changes.

Run the free MOT history first to decide if the car is worth pursuing. Then run a paid check before you commit any money. For the complete pre-purchase process, see our used car history check guide.

The MOT Inspection Manual: How Testers Classify Defects

The DVSA publishes the MOT Inspection Manual — the definitive guide that every authorised MOT tester in the UK must follow. It defines exactly how each component is tested, what constitutes a pass, and how defects are categorised into Dangerous, Major, Minor, or Advisory. The manual covers passenger vehicles (Classes 4 and 7) and is publicly available on GOV.UK.

Understanding the manual helps you interpret MOT history records. When a test record shows "Nearside front brake pad less than 1.5mm — Major defect", the 1.5mm threshold comes directly from the inspection manual. The same threshold applies to every tester at every MOT testing station, so results are consistent across garages.

DVSA Data Retention: Why MOT History Matters

The DVSA retains MOT test records for 30 years. The online checker goes back to 2005, when records were computerised — for most cars, that covers their entire testing life since they first need an MOT at three years old. This data is public: anyone can check the MOT history of any UK-registered vehicle using just the registration number.

The MOT certificate itself is a separate document issued by the test centre after a pass. The DVSA database holds the electronic record. If you lose your paper certificate, you can view the full record online — see our guide on lost MOT certificates.

Decision Framework: Should You Buy Based on MOT History?

Work through this framework when reviewing a car's MOT history. If any answer is "no" on a critical item, pause and investigate before parting with money.

Real-World Examples: What MOT History Tells You

These anonymised examples show how to interpret common MOT history patterns in practice.

Example 1: The well-maintained car

A 2016 Toyota Yaris shows a pass every year. Mileage rises steadily by ~9,000 miles per year. Two advisories (front tyres wearing, minor exhaust leak) appeared in 2022; both are gone by the 2023 test, showing the owner fixed them. The 2024 test is a clean pass with one advisory (wiper blade). This is a well-maintained car — a strong buy.

Example 2: The neglected car

A 2014 Ford Fiesta shows a pass in 2020 with advisories for worn brake pads and a corroded brake disc. The 2021 test fails on brakes (Major — brake pad less than 1.5mm). The 2022 test passes but the same advisory reappears. The 2023 test fails again on brakes. This pattern shows the owner is not fixing advisories before they become failures — the car is neglected. Negotiate hard or walk away.

Example 3: The clocked car

A 2019 Audi A3 is advertised at 25,000 miles. The MOT history shows 32,000 in 2021, 48,000 in 2022, 65,000 in 2023 — then no 2024 test. The odometer has been wound back from ~70,000+ to 25,000. This is clocking — definitive fraud. Walk away and report it. See our clocking warning signs guide.

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