The short answer
There is no single national register a buyer can search to find out whether a car was once a taxi, so the answer comes from several places together: the MOT history and its mileage pattern, the V5C and its keeper history, the physical signs on and inside the car, the licensing authority that would have licensed it, and a straight question to the seller. In London, Transport for London runs a public checker for licensed private hire vehicles; elsewhere, taxis and private hire vehicles are licensed by the local council, and many councils publish their registers.
Why it matters is simple. A taxi works for a living: long hours, short trips, many passengers, a lot of braking and a lot of idling. That is not a fault, and a well-maintained ex-taxi can be a sound car, but it is a different car from the one-owner example with the same age and the same paint, and its price should say so.
Check one: the MOT history and the mileage pattern
Start with the free GOV.UK MOT history service. Every test from the car's third birthday shows a recorded mileage, so you can see how many miles it covered each year. A car in private use tends to add a fairly steady amount a year; a car that was a taxi tends to show very high annual mileage for its first few years and then a sharp drop when it was sold out of the trade. Compare the yearly figures with what is normal for a car of that age in our national mileage article, linked below, and ask about any year that stands out.
The advisory list helps too. Brake pads and discs, tyres and suspension bushes wearing early and often, and seat belt notes on the rear seats, fit a car that has carried passengers for a living.
Check two: the V5C and the keeper history
The V5C registration certificate shows the number of previous keepers and the date the current keeper acquired the car. A car that was a taxi was often registered to a company or to a driver who ran it as a business, and a run of short keeperships early in its life, followed by a sale, is a common shape. The V5C does not say that a car was a taxi, and a private hire car can be registered to a private individual, so this check is about pattern, not proof. Our guides to the V5C and to reading keeper changes, linked below, explain what the document can and cannot tell you.
Check three: the physical signs
Taxis and private hire cars carry licence plates and often roof signs, and removing them leaves marks. Look for filled or plugged holes on the rear bumper, the boot lid or the front grille where a plate was bolted, and on the roof where a sign was fixed. Inside, look for holes or covered fixings on the dashboard where a meter or a card reader sat, wiring that goes nowhere, a worn or sagging rear seat and door cards, heavily worn rear carpet and sills, and a steering wheel and pedals worn well beyond the car's apparent age. Stickers or their outlines on the rear windows, where licence conditions or no-smoking notices were displayed, are another sign. None of these is proof on its own; several together are.
Check four: the licensing authority
- In London. Transport for London licenses private hire vehicles and publishes a licence checker for private hire drivers, vehicles and operators. A car that is currently licensed, or was recently, may show.
- Elsewhere. Taxis and private hire vehicles are licensed by the local council. Many councils publish a public register of licensed vehicles, searchable by registration, and a licensing team will usually say whether a registration has been licensed with them. Use GOV.UK's find your local council service for the council where the car was based; the V5C shows the previous keeper's area through its postcode history only if you have the older documents, so ask the seller where the car came from.
- Across the country. A car can have been licensed by any council, not only the one where it is now for sale. A vehicle history check that includes taxi licensing records can save the ring-round; ask what records it draws on before you pay for one.
Check five: ask the seller, in writing
Ask directly whether the car has ever been used as a taxi or private hire vehicle, and get the answer in a message you can keep. If you buy from a dealer and the car turns out not to match its description, Citizens Advice's guidance on problems with a used car says you might have a legal right to a repair, the cost of a repair, or some or all of your money back, and that this covers cars that do not match the advert or description. It also says you will not be entitled to anything if you were told about the issue and it was fully explained, or if you inspected the car and should have spotted it, which is why the written question matters. That page applies to England and links separate advice for Scotland, for Wales and for Northern Ireland. A private seller is not bound in the same way, but a seller who lies in answer to a direct question has misrepresented the car, and the written answer is your evidence.
What this does not mean
This article carries no figures from our MOT data and makes no claim about how former taxis fare at the test. A car that worked as a taxi is a car with high mileage and hard use, which is a question of price and inspection, not a verdict. Many are well maintained because their owners depended on them. Equally, none of the checks above is proof on its own: a plugged hole in a bumper can be a towbar, a high mileage can be a sales rep, and a company keeper can be a lease. Put the checks together, ask the question in writing, and price the car for what it has done.
Frequently asked questions
No. The V5C shows the number of previous keepers and when the current keeper acquired the car, but not what the car was used for. A company keeper or a run of short keeperships early in the car's life is a pattern worth asking about, not proof. The MOT history's mileage per year and the licensing authority's records tell you more.
Not one a buyer can search directly. Licensing is done by Transport for London in London, which publishes a private hire licence checker, and by each local council elsewhere, many of which publish registers of licensed vehicles. Some paid vehicle history checks include taxi licensing records drawn from those sources; ask what a check covers before you pay.
No. A former taxi has done more miles and more stop-start work than its age suggests, so it should cost less and be inspected more carefully, especially brakes, suspension, clutch or gearbox, and the rear seats and belts. Many are well maintained because a working driver cannot afford a car off the road. Buy it for what it is, at the right price.
Citizens Advice says that if a car bought from a dealer does not match its description you might have a legal right to a repair, the cost of a repair, or some or all of your money back, though not if you were told and it was fully explained, or if you should have spotted it on inspection. Keep the advert and any written answers, contact the dealer in writing first, and use the Citizens Advice guidance for your part of the UK.
Sources and method
This article contains no MOT statistics. Its content is the buyer's own checks, the Transport for London licence checker page, the GOV.UK find-your-local-council service and the Citizens Advice guidance on problems with a used car, as read on 6 November 2026. The national mileage-by-age figures a buyer can compare against are in the linked article.
- Transport for London: taxi and private hire licence checker
- GOV.UK: Find your local council
- GOV.UK: Check the MOT history of a vehicle
- Citizens Advice: problems with a used car
About these figures. Figures are computed by SortedCars from the DVSA anonymised MOT results dataset (class 4, first tests only, test years 2021-2025), published under the Open Government Licence v3.0. Pass rate = passes divided by first tests, with pass-after-rectification counted as a fail. No figure is shown for any group with fewer than 500 tests. Test class 4 only, first tests only; retests are excluded. Pass rates describe fleets, not individual machines: they reflect how cars were driven, maintained and used as well as how they were built, and beyond recorded mileage none of that is in the data. A well-kept example of a model with a weak average can still pass; a neglected example of a strong one can still fail. Alias spellings of a make are counted under one make name and all trims of a model under one model name, using SortedCars' grouping tables.
This article is general information drawn from published test records. It is not professional, mechanical or legal advice, and an MOT pass or a clean MOT history does not guarantee that a car is roadworthy today. If you are unsure about a car, have it inspected by a qualified mechanic. You can check any vehicle's MOT history free on the official GOV.UK MOT history service.
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