Buying a used car is one of the biggest purchases most people make. A vehicle history check can reveal hidden problems that could cost you thousands or leave you without a car entirely.
This guide explains every section of a vehicle history report, what the results mean, and how to make smart decisions based on what you find.
What is a vehicle history check?
A vehicle history check pulls together data from multiple sources to give you a complete picture of a car's past. This includes government databases (DVLA, DVSA), insurance industry records (MIAFTR), finance house registers, and police stolen vehicle databases.
The check reveals things that a test drive or visual inspection cannot, such as outstanding finance, previous write-offs, or stolen markers.
Understanding the verdict: Clear, caution, and issues
Most vehicle history reports give you an overall verdict based on what they find.
Clear means no significant problems were found. The vehicle has no outstanding finance, no stolen markers, no write-off history, and no other red flags.
Caution means something needs your attention, but it may not be a dealbreaker. This could include a repaired write-off (Cat S or Cat N), SORN status, or data that could not be verified.
Issues means there are serious problems. This includes outstanding finance, stolen markers, or severe write-off categories (Cat A or Cat B). You should think very carefully before proceeding with a purchase.
Finance check: Outstanding finance explained
When someone buys a car on finance, the lender often holds a legal interest in the vehicle until the loan is repaid. If you buy a car with outstanding finance, the lender can legally repossess it from you, even though you paid for it in good faith.
What the check tells you:
- Whether there is any finance registered against the vehicle
- The name of the finance company
- When the finance agreement started
- Contact details to verify or settle the debt
What to do if finance is found:
- Ask the seller to clear the finance before you buy
- Contact the finance company to verify the exact amount owed
- Consider using a secure payment method where money goes directly to the lender
- Walk away if the seller cannot provide proof the finance has been settled
Outstanding finance is one of the most common issues found on used cars, particularly those being sold privately.
Stolen checks: Police and insurance markers
A stolen check looks at two different databases.
Police stolen (PNC)
The Police National Computer records all vehicles reported stolen to the police. If a car is flagged here, it means there is an active theft report.
What happens if you buy a stolen car: The police can seize the vehicle at any time. You will lose both the car and the money you paid for it. Your only recourse is against the person who sold it to you.
Insurance theft marker (MIAFTR)
The Motor Insurance Anti-Fraud and Theft Register (MIAFTR) is an insurance industry database. Insurers use it to record vehicles that have been:
- Reported stolen to an insurance company
- Written off following a theft
- Recovered after being stolen
A vehicle can appear on MIAFTR but not on the police database if the owner reported the theft only to their insurer.
Important: A condition record on MIAFTR does not always mean theft. The same database records write-offs from accidents. Always check the specific reason, such as whether the theft indicator says "NOT STOLEN" for accident damage only.
Write-off categories: Cat A, B, S, and N explained
When an insurance company decides a vehicle is not worth repairing, they classify it with a write-off category. The category tells you how severe the damage was.
Category A (Scrap only)
The vehicle must be crushed and cannot return to the road. This is reserved for vehicles that are unsafe to repair, often due to fire or flood damage that has compromised the entire structure.
If you see Cat A: Do not buy this car. It should not legally be on the road.
Category B (Body shell destruction)
The body shell must be destroyed, but salvageable parts can be removed and sold. Like Cat A, these vehicles cannot legally return to the road as complete vehicles.
If you see Cat B: Do not buy this car. It should not be for sale as a complete vehicle.
Category S (Structural damage)
The vehicle sustained structural damage but can be repaired and returned to the road. Structural damage includes the chassis, frame, or crumple zones.
If you see Cat S:
- The car can be legally driven if properly repaired
- Get a thorough inspection from an independent mechanic
- Check that repairs were done professionally
- Expect the car to be worth less than a similar vehicle without a write-off history
- Insurance may be more expensive or harder to obtain
Category N (Non-structural damage)
The vehicle was written off due to non-structural damage. This could be cosmetic damage, electrical problems, or theft recovery where the car was not damaged.
If you see Cat N:
- Often less serious than Cat S, but still requires investigation
- Could be minor cosmetic damage or could be significant electrical issues
- Get an inspection to understand what was damaged and how it was repaired
- The car will have reduced resale value
Older categories (C and D)
Before October 2017, different categories were used:
- Cat C (now Cat S): Repair cost exceeded the vehicle's value, structural damage
- Cat D (now Cat N): Repair cost exceeded the vehicle's value, non-structural damage
You may still see these on older vehicles.
MOT history: Pass, fail, advisories, and dangerous defects
The MOT test checks that a vehicle meets minimum safety and environmental standards. Every vehicle over three years old must have a valid MOT.
MOT status
Valid: The vehicle has a current MOT certificate. Check when it expires, as you will need to arrange a new test before that date.
Expired: The vehicle's MOT has lapsed. It is illegal to drive the vehicle on public roads (except to a pre-booked MOT appointment).
No MOT due: Vehicles under three years old do not need an MOT yet. Check when the first MOT will be due.
Test results
Each MOT test is recorded with its result:
- Pass: The vehicle met all requirements
- Fail: The vehicle had defects that must be fixed before it can pass
Defect types
Dangerous defects: Serious safety issues that make the vehicle illegal to drive immediately. Examples include severely worn tyres or failed brakes.
Major defects: Issues that cause a test failure and must be fixed. These affect the vehicle's safety or environment.
Minor defects: Small issues noted but not causing a failure. Should be monitored or repaired.
Advisories: Items that are not yet a problem but may become one. Common advisories include brake pads wearing thin or tyres approaching the legal limit.
Reading the MOT history
Look for patterns in the MOT history:
- Consistent advisories becoming failures suggest poor maintenance
- High mileage increases between tests could indicate heavy use
- Many failures might indicate neglect or hard use
- Clean history with few advisories suggests good maintenance
Mileage analysis: Spotting inconsistencies
Mileage clocking, where someone winds back the odometer, is illegal but still happens. A vehicle history check compares mileage readings from MOT tests and other sources.
What to look for
Consistent increases: Mileage should go up at each MOT test. A healthy pattern shows steady, believable increases year on year.
Rollback warning: If a later MOT shows lower mileage than an earlier one, this is a major red flag. The odometer may have been tampered with.
Unusually low mileage: Be suspicious of older cars with very low mileage. Average UK mileage is about 7,000-10,000 miles per year.
Mileage jumps: Large jumps between tests are not necessarily bad but should be questioned. The seller should be able to explain high-mileage periods.
Tax and SORN status
Tax status
Taxed: The vehicle is currently taxed and legal to drive on public roads.
Untaxed: The vehicle is not currently taxed. It cannot legally be driven on public roads until tax is paid.
SORN (Statutory Off Road Notification): The owner has declared the vehicle is not being used on public roads. SORN vehicles cannot be driven or parked on public roads.
What SORN means for buyers
A SORN vehicle is not necessarily a problem, but investigate why:
- Could indicate a project car or seasonal vehicle
- May have been off the road for mechanical issues
- Check the MOT history for gaps that match the SORN period
You will need to tax the vehicle before driving it away after purchase.
Recall status: Outstanding safety recalls
Manufacturers issue recalls when they discover safety defects. Some recalls are minor, others are serious.
What the check tells you
- Whether there are any outstanding recalls
- What the recall is for
- Whether the recall has been completed
What to do about recalls
- Check with the manufacturer or a dealer to confirm the recall status
- Outstanding recalls should be completed before you buy
- Most recalls are fixed free of charge at authorised dealers
- Serious recalls may affect insurance if not completed
Vehicle specifications and identifiers
VIN (Vehicle Identification Number)
The VIN is a unique 17-character code that identifies a specific vehicle. It encodes information about where and when the vehicle was made, its specifications, and its unique serial number.
Where to find the VIN:
- On the V5C logbook
- On a plate in the windscreen (usually lower corner)
- On a plate in the engine bay or door frame
Why it matters:
- A VIN mismatch could indicate a cloned vehicle or one assembled from parts of different cars
- The VIN should match across all locations and documents
Engine number
The engine number identifies the specific engine fitted. If the engine has been replaced, the number may not match factory records.
V5C (Logbook)
The V5C is the registration document. It records the registered keeper (not necessarily the legal owner) and the vehicle details.
Check the V5C:
- Is the document genuine? Fake V5Cs do exist
- Does the seller's name match the registered keeper?
- Do the vehicle details match what you see?
- When was the V5C last issued? Recent issue without a sale could indicate problems
Keeper history: What previous owners tell you
The keeper history shows how many registered keepers the vehicle has had and when ownership changed.
What to consider
Many keepers: A car with many owners in a short time might have underlying problems that caused each owner to move it on.
Short ownership periods: Be cautious if owners have kept the car for only a few months.
Long ownership: A single owner for many years often suggests satisfaction with the vehicle.
Dealer keepers: Trade keepers between private owners may indicate the car has been through auction or wholesale channels.
Plate and colour changes
Number plate changes
Vehicles can have their registration plates changed through:
- Cherished transfers: Moving a personalised plate to or from the vehicle
- Age-related plates: Replacing the original plate with a different one
Why it matters: Multiple plate changes can sometimes be used to disguise a vehicle's history or hide its true age. Check that all changes are documented and legitimate.
Colour changes
If the vehicle's colour has been changed, this should be recorded with the DVLA. A colour mismatch between the V5C and the actual car is a red flag.
Changes should be registered, so check:
- Does the V5C show the correct current colour?
- Was the previous colour noted?
- Is there a legitimate reason for the change?
What a vehicle check cannot tell you
A vehicle history check is essential but has limitations:
Mechanical condition: The check cannot tell you if the engine is worn, the clutch is slipping, or the suspension is tired. You still need a physical inspection and test drive.
Quality of repairs: If a car has been in an accident and repaired, the check shows the write-off category but cannot tell you how well the repairs were done.
Private sale history: Some information, like whether the car was involved in an accident that was not claimed on insurance, may not be recorded.
Future problems: The check is a snapshot of the current situation. It cannot predict future failures or issues.
Making your decision
After reviewing a vehicle history check:
- Clear result: Proceed with confidence, but still inspect the car
- Minor cautions: Investigate further but do not necessarily walk away
- Cat S/N write-off: Get a professional inspection, factor reduced value into your offer
- Finance, stolen, or Cat A/B: Do not buy until the issue is resolved or walk away
A vehicle history check is one of the best investments you can make when buying a used car. The cost is tiny compared to the potential losses from buying a car with hidden problems.
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