Know what you’re buying
Car history check: what to check before you buy
A car history check helps you compare a used car’s advertised details with recorded information about its past. Start with the registration, check what each service includes and follow up any warnings before agreeing to buy.
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What does a car history check show?
A check may bring together the car’s recorded identity, mileage and past events, along with warnings such as outstanding finance. The contents vary by provider and product, so read the list of included checks before ordering.
| Check | What it helps you understand | What still needs checking |
|---|---|---|
| Vehicle identity | Whether recorded details match the advert. | Match the physical car and its VIN to the original documents. |
| MOT and mileage | Recorded test results, advisories and mileage readings. | Ask about inconsistent readings and repairs to earlier faults. |
| Outstanding finance | Whether the checked sources report a finance interest. | Resolve a warning with the provider and finance company before buying. |
| Theft and insurance write-offs | Whether those events appear in the included records. | Check the scope and follow up any warning; no recorded damage does not prove an accident-free past. |
| Service records | Dates, mileages and work listed in records the service can obtain. | Confirm that the product includes servicing, then ask for paperwork covering any gaps. |
For example, HPI lists finance, theft and insurance write-off checks, but excludes service-history records and a mechanical assessment . Read each provider’s current description rather than assuming that every “full check” covers the same things.
Which car history checks are free?
Start with the DVLA vehicle information service and GOV.UK MOT history . These official services are free to use. You will need the registration number.
Our MOT history check guide explains how to read mileage changes, failures and recurring advisories, and turn them into questions for the seller.
- Vehicle details: compare the make, colour, fuel type and registration information with the advert.
- MOT history: read the results, recorded mileages and notes about faults or advisories.
- Safety recalls: follow the recall check linked from GOV.UK’s used-car buying guidance .
These checks help you prepare, but a free MOT or vehicle-details lookup does not establish the car’s finance, theft or insurance write-off status. Compare paid services if you need those checks too.
What to compare before paying for a check
Choose a report by the questions you need answered. A low-cost first look at an advert may be useful when making a shortlist; before buying, you need to resolve the wider history and condition questions too.
- Coverage: are finance, theft, write-off and mileage checks explicitly included? Are service records a separate feature?
- Missing information: will the report show which checks could not be completed?
- Timing: when are the checks run, and can you refresh them if the purchase is delayed?
- Help with a warning: how do you query a result or correct a mismatch?
- Terms: if a provider advertises a guarantee, read its eligibility rules, exclusions and claim limits.
See a sample before paying. Look for readable findings and clear next steps, and check whether the listed price is a one-off payment or a subscription.
How to read the results
A warning needs an answer
A warning tells you something needs investigating. Check that the report identifies the correct car, ask the provider what the result means and request supporting documents from the seller. Pause the purchase while an important warning remains unresolved.
No record found has a limited meaning
A completed search that finds no record applies to the source and category checked at that time. It does not establish every event in the car’s past. Unrecorded repairs and information outside that source’s coverage may still be missing.
Unavailable means you still need a check
If a source did not respond or a product does not include a check, there is no result to rely on for that question. In CarDiligence, missing evidence remains unverified. Arrange another check or obtain the necessary documents before making a decision that depends on it.
Turn the findings into questions for the seller
Keep each question tied to a record. For example: “The earlier MOT mentioned worn tyres. Do you have an invoice for their replacement?” Or: “This service entry lists the date and mileage, but not the work. Could you send the invoice?”
Treat the reply as something to verify. Compare the invoice with the car’s details and check its present condition at the viewing. Our advert-check guide shows a report example and a question you can send about missing service detail.
A pre purchase car inspection can help assess current condition. Use the history findings to brief the inspector, and read what to check alongside a history report before committing to buy.
Where CarDiligence fits
Start with a UK car advert or enter the details manually. CarDiligence Snapshot is a first look at the advert, MOT, price and previous-advert evidence. It does not include finance, write-off, stolen or service-history checks.
The Full Report adds wider history and service checks, buying guidance and estimated servicing and repair costs. Read the status of each check: availability depends on the sources, and an unavailable result stays unverified. Neither report includes a physical inspection or a warranty.
Read the free sample report , then compare the Full Report’s checks and price to decide whether it covers the questions you want answered.
Car history check FAQs
Can I get a free car history check?
You can check vehicle details through DVLA and look up MOT history on GOV.UK for free. These are useful starting points. For finance, stolen-vehicle and insurance write-off records, compare services that explicitly include those checks; a free vehicle or MOT lookup does not provide them.
What do I need to check a car’s history?
Start with the registration number and confirm the make, model and advertised mileage with the seller. A provider may also ask for the vehicle identification number, or VIN. At the viewing, match the car’s identifiers with its original documents and the details in your check.
Will a history check show every accident or repair?
No. A report can only show information covered by its sources. Damage repaired without a record reaching those sources may be absent. Ask the seller about previous damage, request repair paperwork and arrange an independent inspection to assess the car’s current condition.
Does a car history check prove full service history?
Check whether service records are included in the product you choose. Even when records are returned, you need to compare the dates, mileages and jobs listed with the manufacturer’s recommendations. Ask the seller for invoices or digital service records to explain any gaps.