Certificate of Conformity: your questions answered

A Certificate of Conformity (COC) is a paper document issued by a vehicle manufacturer as evidence that a vehicle complies with European regulations, including environmental and safety standards. The document also supports the process of registering a vehicle in any European member state without further requirements subject to national laws.

A number of frequently asked questions have arisen about the COC. Scroll down to read the answers to these, and where to go for further advice.

Why do I need a Certificate of Conformity?

There are six primary reasons why you will need to request a COC.

  • You are exporting your vehicle abroad
  • You want to return to the UK with a vehicle previously registered in the UK
  • You want to import your vehicle from the Channel Islands or Northern Ireland
  • You want to register a vehicle for a Congestion Charge discount or residential permit
  • You want to apply for a taxi or private hire driving licence
  • You want to show evidence of the emissions standards of the vehicle

When applying for a taxi or private hire driving licence, it is the owner’s responsibility to confirm what documentation is required with the Public Carriage Office department of Transport for London. This could be either a COC or a letter from the manufacturer confirming the Euro emissions standard of the vehicle.

We advise owners not to book an inspection with the PCO office until the necessary documents have been obtained.

How much does a Certificate of Conformity cost?

A COC is free of charge if you are the original owner of the vehicle or purchased it as a used vehicle from an official Toyota centre. Subsequent owners, or those who do not meet the previous criteria, will be charged £75.00 (including VAT, administration costs and postage) to receive a COC.

If necessary, Toyota (GB) PLC can provide a Euro emissions declaration letter and can be requested by emailing coc@toyota.co.uk

How do I apply for a Certificate of Conformity?

If you purchased your new or used vehicle from an official Toyota centre you can request a COC through the dealership you purchased the vehicle from. Alternatively, you can request a COC directly from Toyota (GB) PLC by emailing coc@toyota.co.uk

In both instances, you will need to prove that you are the vehicle’s registered keeper. A copy of the full V5C ‘log book’ document should be submitted as evidence (the tear-off New Keeper slip is not sufficient proof of registration). If you are not the registered keeper, you can provide an official purchase invoice that clearly states your full name, address and vehicle details.

How long will it take to receive my certificate?

If your COC is being supplied free of charge, the document should be dispatched within the 10-14 day processing period. If payment is required, the COC will be dispatched 5-7 days after your payment has been received and cleared.

As the COC is a legal document, it cannot be emailed and has to be posted to the address you have provided.

Where can I go for more information?

Toyota (GB) PLC has a dedicated web page that explains how we can support you in the importing and exporting process but you can also email the team at coc@toyota.co.uk

Please be advised that it can take up to 10-14 working days to receive a response and that Toyota cannot provide advice regarding how to import or export your vehicle.

Further information can also be found on the UK government website.


  1. I have a 2003 Toyota Alphard Hybrid which is not being listed as compliant with the ULEZ emission zones.
    Please can you tell me what the NOX level is please?

    1. Hi Bing, thanks for your query.

      To best answer your question, please can you provide your vehicle registration.


  2. Hi i bought toyota sienta 2015 in Japan car i mean import so how to apply for emission certificate please? What Documents needed please?

  3. I have a a RAV4 11 plate diesel non Ulez compliant. I have just read an article about European emissions being a loop hole in some cars. How do I find out if my car fits this remit?

  4. I have received a coc for my car – what do I do now to register this with ulez? So that I don’t get charged

  5. Dear Sir/ madam

    I have a Toyota Avensis Verso 2000cc petrol engine Reg No BK52CMY which I had converted to LPG over 10 years ago. The car is officially registered as bi fuel with the DVLA however the Birmingham Coty Council ULEZ / Air free zone require confirmation from the vehicle manufacture s emissions are are Euro4 compliant.
    Please can I request you provide me with the above information in order that Birmingham City Council can class the vehicle as compliant / exempt from the clean air charges.
    I attach below an extract of what is exactly required:- :

    f you believe your vehicle meets the Euro 4 Petrol Standard, you will need to supply evidence of the Euro Standard from the manufacturer to update the DVLA vehicle record and the Clean Air Zone Vehicle Checker.

    This evidence can be in the way of a Certificate of Conformity or a letter from the manufacturer’s homologation unit clearly stating the vehicle registration number and the Euro Standard.

    I trust the above is in order snd you will be able to help me.

    Thanking you in advance.


    1. Hi Abbas, thanks for contacting us.

      We would recommend seeking the support of our Customer Relations team. They are best placed to support and advise you with this query.

      They can be found here: https://fal.cn/3ABcF


    1. Hi Denise, thanks for your question.

      We would recommend consulting the government website for this information.


  6. Hi toyota,

    I have a 2001 toyota mkii jzx110 imported from Japan,
    It is fitted with d4 direct injection and has exhaust recirculation with multiple catalytic converters. The lexus is300 has a similar engine and meets recent emissions standards yet my car is listed as non compliant. Another toyota mkii owner has a 2006 model and is compliant despite being the same car.

    How do I go about obtaining emissions data?
    Registration (ym51 twy)

    1. Hi Ashley, thanks for your comment.

      Unfortunately, we are unable to advise on imported vehicles. Therefore we would not be able to advise here.


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