Thailand issues a private motorcycle licence as a separate document from a private car licence. Holding one does not give you the other, and there is no engine size small enough to fall outside the requirement. A 110cc automatic step-through needs motorcycle entitlement in exactly the same way a 650cc twin does.
That is the whole article in two sentences, and it is the single most consequential thing on this site for a visitor's safety and finances. Every year a very large number of foreigners ride scooters in Thailand on a car licence, and almost none of them know that they are outside their insurance while they do it.
- Separate licencesPrivate Car and Private Motorcycle, both under section 43 of the Motor Vehicle Act B.E. 2522
- Engine-size exemptionNone. There is no category that a car licence covers
- On an International Driving PermitCategory A — a single motorcycle category under both conventions
- MopedsThailand has formally declared that it treats mopeds as motorcycles
- Fee, currently reported as105 baht for a 2-year temporary motorcycle licence; 255 baht for the 5-year one
Why a car licence never covers a scooter
Two independent systems say the same thing, which is unusual and worth spelling out.
Thai domestic law. Driving licences for cars and motorcycles are issued under section 43 of the Motor Vehicle Act B.E. 2522 (1979) as distinct documents. A Private Car licence authorises a car. A Private Motorcycle licence authorises a motorcycle. There is no overlap and no implication.
The international conventions. Both the 1949 Geneva and 1968 Vienna conventions — Thailand is a party to both — carry motorcycle entitlement as category A, defined in the 1949 text as "motor cycles with or without a sidecar, invalid carriages and three-wheeled motor vehicles with an unladen weight not exceeding 400 kg". Cars are category B. If your home licence has no motorcycle entitlement, your International Driving Permit shows category B and nothing else, and there is no category A to be recognised.
Thailand closed the moped argument at the treaty level
When Thailand ratified the 1968 Convention it filed a declaration under Article 54(2) stating that "for the purposes of the application of this Convention, it treats mopeds as motor cycles (Article 1(n))".
Some countries operate a lighter moped tier that a car licence can reach. Thailand has formally declared that it does not. For Convention purposes a moped is a motorcycle, so it needs category A. This is on the record in the United Nations depositary file, and it is the answer to anyone who tells you a small step-through does not count.
Where the engine-size thresholds actually fall
For an adult rider: nowhere. That is the honest answer, and it is not the one most sources give.
Category A is a single motorcycle category under both conventions. There is no small-engine sub-category, no 50cc line, no 125cc line. Thailand's own licensing does not create one either, and its moped declaration removes the last theoretical gap. Engine size changes what the machine will do on a hill and what your insurer thinks of it. It does not change whether you need a licence.
Two engine-size figures do get quoted in a Thai context, and both need handling carefully.
The 15-to-17 rider limit: the sources disagree
Thailand's minimum age for a motorcycle licence is reported as 15, on a restricted or probationary basis, with full motorcycle entitlement from 18. A restriction on engine size for those younger riders is widely stated — but the figures conflict. Thai motoring sources give 110cc; a translation of an older version of the Act gives 90cc; the standard English reference on Thai licences does not mention an engine limit at all. We could not establish which is current, so we are not going to publish a number. If this matters to you, ask the Department of Land Transport office directly. See minimum driving age in Thailand.
The "big bike" endorsement: status unknown
An additional endorsement for larger motorcycles — reported as those above 400cc or 45 kW — has been described as legislated but not implemented, as of September 2022. We could not establish its status now. We are therefore not going to tell you that it exists, and we are not going to tell you that it does not. If you are planning to rent or buy something substantial, ask the rental company and the Department of Land Transport office rather than relying on anything written online, including this page. Renting a big bike in Thailand covers what operators currently ask for.
Getting a Thai motorcycle licence
The process is the same as for a car licence, run separately. The document set is identical — passport with visa page and entry stamp, a residence certificate and a medical certificate both issued within the last 30 days, photographs and the application form — and you can apply for both licences at the same visit on one set of documents. You will sit both sets of tests and pay both fees.
The motorcycle practical test is conducted in its own marked yard, not on public roads. A foreign licence with motorcycle entitlement will usually get it waived, on the same caveats as everything else here: it varies by office and it is not a rule we could confirm.
Fees are currently reported at 105 baht for the two-year temporary motorcycle licence and 255 baht for the five-year one — around £2.50 and £6. Consistent across sources and consistent with the published formula, but not read off the Department's own fee page, which was unreachable. Check the schedule at the counter.
The full sequence is in how to get a Thai driving licence, step by step, and the testing in the Thai driving licence test.
What happens if you ride without it
The roadside consequence is modest. Translations of the Motor Vehicle Act give imprisonment of up to one month, a fine of up to about 1,000 baht, or both, for driving without a licence — around £23 or US$28. We could not check the current text against the Royal Gazette, so read that as reported.
The real consequence is elsewhere.
Riding without motorcycle entitlement is the standard way visitors end up paying their own hospital bills. The UK government states that driving or riding in Thailand without a valid licence "could invalidate your travel insurance and you'll be unable to claim if you have an accident or injury". The one travel insurance wording we were able to read in full — Fast Cover, an Australian insurer — requires the rider of a machine of 125cc or under to hold "a current Australian Drivers Licence (Provisional or higher) (regardless of the local laws) and a licence valid for the country that you are riding in", and the rider of anything larger to hold a motorcycle licence for the same class. That "regardless of the local laws" clause means the insurer applies its own test whether or not a Thai officer would have stopped you. Read your own policy: we can only tell you what that one says.
The same wording contains a clause almost nobody has read: a pillion passenger's cover can depend on the person in control holding a current licence valid for that class of machine. Your passenger's claim can fail on your paperwork. What voids your motorbike cover in Thailand works through the exclusions.
The rental shop is not a licensing authority
Shops in tourist areas routinely rent scooters without checking entitlement at all. That is widely reported and it is true. It changes nothing: the shop is not the body that decides what you are entitled to ride, and "they gave me the key" is not a position anyone has ever successfully argued with an insurer.
The UK government adds a warning most riders have never heard: "Motorcycles and scooters for hire in tourist areas are often unregistered and cannot be used legally on a public road." A machine that cannot legally be on the road cannot be legally ridden by anyone, whatever licence the rider holds — and a tourist cannot verify a Thai registration book at the point of hire. That is a reason to prefer an established operator; see can you legally rent a motorbike in Thailand and choosing a rental scooter.
The same advice tells you to check the small print of the hire agreement, "paying particular attention to any limits on engine size and necessary licences". Rental contracts and insurance policies both use engine-size thresholds even though the licensing system does not — which is why 125cc keeps appearing as a number that matters commercially while meaning nothing legally.
And whatever you are riding, the helmet is not optional: Thailand's helmet law.
Frequently asked questions
Can I ride a 125cc scooter on a car licence in Thailand?
No. Car and motorcycle licences are separate documents under Thai law, both conventions treat motorcycles as a single category A with no small-engine tier, and Thailand has declared that it treats mopeds as motorcycles. Engine size does not create an exemption.
Is there an engine size I can ride without a licence?
No. That is what the moped declaration means in practice — Thailand has told the treaty depositary that it has no lighter moped tier.
Does my International Driving Permit cover a motorbike?
Only if your home licence already carries motorcycle entitlement, in which case the permit shows category A. A permit cannot add entitlements you do not hold — it is a translation of your licence, not a licence.
What is the minimum age for a motorcycle licence in Thailand?
Reported as 15 on a restricted or probationary basis, with full motorcycle entitlement from 18, and 20 for a public (commercial) motorcycle licence. Those figures come from secondary sources. We are deliberately not stating an engine-size limit for 15- to 17-year-olds because the sources genuinely conflict.
Do I need a special licence for a big bike?
An extra endorsement for larger machines has been reported as legislated but not implemented, with its current status unclear. We could not establish whether it is in force, so ask the rental company and the Department of Land Transport rather than relying on anything you read — including this.
The rental shop did not ask for a licence. Does that make it legal?
No. Shops in tourist areas frequently do not check. The entitlement either exists or it does not, and the shop's practice has no bearing on your legal position or on an insurance claim.
How much does a Thai motorcycle licence cost?
Currently reported as 105 baht for the two-year temporary licence and 255 baht for the five-year one. Those figures are consistent across sources but we could not read the official schedule directly. The medical certificate, residence certificate and photographs are extra.
I have a car licence at home and want to ride here. What are my options?
Realistically three: get motorcycle entitlement at home before you travel, apply for a Thai motorcycle licence if you are here long enough to have a residence certificate, or hire a car instead. There is no paperwork available in Thailand that turns a foreign car licence into motorcycle entitlement.