· by L'équipe EnvoiFaxGratuit
Vehicle registration stuck: faxing a vehicle file in France
Registration application rejected by the ANTS? Here's what you can still fax to a vehicle appraisal firm, a CERT or an authorised professional, and which documents to include.

Short answer: the Agence nationale des titres sécurisés (ANTS) has no public fax number, and no CERT (Centre d'expertise et de ressources des titres) will volunteer one — the standard route is the immatriculation.ants.gouv.fr online service and the messaging system in your user account. But around that closed loop there survives a whole ecosystem that does still run on fax: vehicle appraisal firms, the DREAL "mines" services for individual type approvals, authorised professionals (garages, dealerships, agents), credit and leasing companies holding a registered charge, and some CERTs approached through an authorised intermediary. What goes through this channel: an appraisal certificate, a release of charge, a power of attorney, a proof of address demanded urgently, a tax clearance certificate. What never goes through: the registration application itself, a Cerfa 13750 "instead of" the online service, or the original transfer-of-ownership certificate. Golden rule: fax is for unblocking an existing file, not for opening one.

Why a vehicle registration file gets stuck
Since the closure of prefecture registration counters in November 2017 (the Plan préfectures nouvelle génération), every application for a registration certificate goes through the ANTS or through a professional authorised and approved for the SIV (Système d'immatriculation des véhicules, the national vehicle registration system). Six specialised CERTs process the flows remotely; the user, meanwhile, sees only a progress status in their account and, occasionally, a terse message along the lines of "additional document requested".
The most common blockages are always the same:
- a transfer-of-ownership certificate not registered by the seller, which prevents the change of holder;
- a registered charge (gage) entered by a credit institution and not released after the loan was paid off;
- an objection (OTCI) tied to a "damaged vehicle" procedure following an appraisal report;
- a missing tax clearance certificate (quitus fiscal) for a vehicle imported from the European Union;
- a certificate of conformity missing or rejected for a non-EU or modified vehicle;
- a supporting document rejected because it is illegible or out of date (proof of address more than six months old).
In all six cases, the answer is not in the online service. It lies with a third party: a vehicle appraiser, a DREAL, a bank, an importer, an agent. And many of those third parties still work with a fax number — precisely because they need to send signed documents to counterparts with whom they share no secure messaging system.
What fax can genuinely unblock
Releasing a charge after a loan has been repaid
A charge on a vehicle is entered in the national register of vehicle charges. For as long as it appears there, the vehicle can be sold but the prospective buyer will be alerted, and certain operations remain impossible. Once a dedicated loan or a bought-out lease (LOA) has been settled, the lender must declare the release. In practice, the "charge management" departments of finance companies publish a fax number in their general terms and conditions: it is the historic channel for transmitting settlement certificates and signed release requests. A fax sent with a time-stamped transmission report is a useful record here if the release drags on — and it often does.
The appraisal certificate for a "damaged vehicle"
When a vehicle is declared technically beyond repair or an economic write-off, a VE (véhicule endommagé, damaged vehicle) procedure blocks registration until the appraiser issues a favourable second report. The vehicle appraiser, listed on the national register maintained by the Commission nationale des experts en automobile (CNEA), sends the report to the insurer, the owner and, depending on the case, the competent CERT. Many provincial appraisal practices still operate with a fax machine dedicated to signed documents: report, certificate of return to the road, record of supplementary inspection.
Individual type approvals at the DREAL
For a vehicle imported from outside the EU, a converted camper van, a classic car or a heavy modification, you need an individual type approval (réception à titre isolé, RTI) from the vehicles department of the DREAL — the former "service des mines". In their RTI guidance notes, DREALs publish full contact details that regularly include a fax number for additional documents and for booking appointments. It is one of the few State services in the vehicle sphere where fax is still explicitly mentioned in official documents. Always check the number before sending, using the method set out in our guide to finding and verifying a French government fax number.

The standard file: what to send, and in what order
A vehicle fax that gets results runs to six to ten pages, no more. Beyond that, the risk of the transmission cutting out rises, and the recipient loses the decisive document.
| Order | Document | Note |
|---|---|---|
| 1 | Cover sheet | Subject: ANTS file number or full VIN |
| 2 | Request letter, 10 lines | Dated, signed, with a phone number where you can be reached |
| 3 | Copy of the registration certificate | Both sides, including detachable coupons |
| 4 | Triggering document | Settlement certificate, appraisal report, tax clearance, power of attorney |
| 5 | Proof of identity | Both sides, not expired |
| 6 | Proof of address | Less than six months old, name and address legible |
The VIN (17 characters) is the key to everything: write it in large characters on the cover sheet, visually separating the groups of four, and double-check the zero against the letter O. A misread VIN means a file closed with no action. Our fax cover sheet generator lets you produce a clean first page with subject, reference and page count.
As for legibility, the rule is brutal: fax works in black and white, at 200 dots per inch. A registration certificate photographed on a smartphone under kitchen lighting arrives grey and unreadable. A portable sheet-fed document scanner solves the problem in a minute per page, and a matte black scanning backdrop mat avoids reflections on the holograms of the certificate. If all you have is your phone, lay the document flat on a dark surface, with daylight from the side, and check the result after converting to black and white — we go through the method in the article on preparing a PDF that gets through.
What never goes by fax
Let's be blunt, because this mistake costs weeks:
- The registration application (the former Cerfa 13750) is now handled only through the online service or by an authorised professional. Faxing that form to a prefecture will get you nowhere: the office no longer holds the SIV authorisation to process it.
- The transfer-of-ownership certificate (Cerfa 15776) must be registered online by the seller within fifteen days. A fax does not replace that registration, which generates the transfer code the buyer cannot do without.
- The power of attorney to an authorised professional can be faxed to the garage, but it is the professional who enters the data into the SIV; your fax "counts" only as a transmission between you and them.
- Originals: a fax is a copy. Keep the paper original until you have the definitive certificate in hand. An expanding file archive box for the complete vehicle file — certificate, invoices, reports, roadworthiness tests — prevents the loss of the very document you will be asked for again.
- Payment of taxes: the regional tax and the delivery fee are paid online, never by sending bank details over an unencrypted channel.
A fax number found on a forum, a comparison site or a paid "carte grise formalities" website is worthless. Several commercial sites present themselves as official intermediaries: only a professional authorised and approved for the SIV can file an application on your behalf, and their accreditation can be verified.
Timescales: what you gain, what you don't
Fax does not shorten a CERT's processing time. It shortens the loop with the third party holding the missing document. Rough figures observed, to be treated as benchmarks rather than guarantees:
- release of charge sent by fax to a finance department: processing quoted at 48 to 72 working hours, versus one to two weeks by post;
- additional document sent to a DREAL ahead of an RTI appointment: avoids a rescheduled slot, often several weeks later;
- appraisal certificate chased up with a practice: a few hours, with telephone confirmation.
Two habits make those gains stick. First: always duplicate the transmission with an upload to your ANTS account or an email to the professional, so the document exists in two places. Second: keep the transmission report showing the time, the number called and the number of pages sent. If a date is disputed — the expiry of a roadworthiness test, the fifteen-day transfer deadline, the validity of a tax clearance — that is the only document that will date your action. A self-inking dial date stamp applied to the paper copy you keep is a useful addition for anyone managing several vehicles.
Case study: vehicle imported from Germany, file blocked
A classic scenario. You buy a saloon registered in Germany, the seller hands you the Zulassungsbescheinigung Teil I and Teil II, and the German roadworthiness test is recent. You file the application on the ANTS portal: it is suspended for "certificate of conformity unusable" and "tax clearance certificate missing".
The sequence that unblocks it:
- Tax clearance certificate: apply to the département's business tax office (service des impôts des entreprises), with the purchase invoice and the foreign registration document. Several SIEs still accept additional documents by fax, in support of an application already filed. Our article on fax and the French tax authorities sets out the accepted uses on the public finances side.
- European certificate of conformity (COC): to be requested from the manufacturer or its French representative. Importers' "homologation" departments work by form and, for older vehicles, by fax. Include the VIN and a copy of the foreign registration document.
- French roadworthiness test: mandatory even if the foreign test is still valid, in most configurations.
- Upload of the documents to the ANTS account, and only there.
So fax comes into play twice, upstream, to obtain documents — never to file the application. That is exactly the logic to remember: it is the tool of the document providers, not of the counter.
If you have neither a printer nor a scanner, the France Services centres will scan and send alongside you, as explained in our guide to help from France Services. And for a one-off transmission from home, the site's form accepts French numbers with no equipment needed; the directory lists verified official numbers.

Frequently asked questions
Does the ANTS have a fax number?
No. The agency publishes no fax number for users and its CERTs handle files through the online service. Any number presented as "the ANTS fax" should be treated as fake. Exchanges go through the messaging system in your user account and, for blocked cases, through the ANTS telephone line or the ombudsman.
Can you fax a transfer-of-ownership declaration to the prefecture?
No, and it is no longer the prefecture that registers it. The seller must complete the declaration online within fifteen days of the sale. Faxing the Cerfa 15776 to a prefecture office will produce no registration and will not protect you if the buyer commits an offence.
My garage is asking for my documents by fax — is that normal?
It is common and acceptable for a professional authorised for the SIV, who then enters the application. Even so, insist on written confirmation of receipt and send only a copy, never the original registration certificate struck through and signed, which you must keep.
Does a fax prove I met the fifteen-day deadline?
It proves that you sent a document to a given number at a given time. For a transfer of ownership, it is the online registration that counts. For a document requested by a third party, the transmission report is useful prima facie evidence. The question of evidential weight is covered in detail in our article on the evidential value of fax.
What if the file stays blocked regardless?
After two months with no response, refer the matter to the Défenseur des droits or the ANTS ombudsman, attaching the full history: screenshots of your user account, fax transmission reports, letters. A ring binder with clear punched pockets kept in chronological order makes that file immediately readable for the ombudsman, and that is often what gets things moving.
In summary
- The ANTS and its CERTs have no fax number for users: the registration application must go through the online service or an authorised professional.
- Fax remains useful for obtaining missing documents from third parties: release of charge, appraisal report, certificate of conformity, tax clearance certificate, additional DREAL documents.
- An effective transmission runs to six to ten pages, with a cover sheet showing the VIN prominently and documents scanned in black and white at 200 dpi.
- Never fax a Cerfa 13750, a transfer-of-ownership certificate or bank details.
- Duplicate the transmission with an online upload and keep the transmission report until you receive the definitive certificate.
- If the blockage persists, build a complete chronological file before referring the matter to the ombudsman.


