You have just settled in France with the car you drove over from Britain. The ferry crossing is behind you, the removal boxes are unpacked, and your UK-registered car sits outside your French home still wearing its British number plates. How long can you keep driving it like that, what paperwork does France demand, and what happens if the police stop you in month three with nothing but a British logbook, a UK insurance certificate and an old MOT? Since Brexit, this ordinary situation has become a genuine legal file. The United Kingdom is now a third country for customs purposes, every registration runs through the online ANTS system, insurance must meet French compulsory cover rules, and roadside checks can end with a fixed fine plus immobilisation of the vehicle. This guide works through the whole sequence in plain English, with the exact French rules that govern each step, recent court decisions that show how strictly judges treat registration and insurance gaps, and a practical route for putting the file right and challenging penalties where a challenge is arguable.
A few vocabulary notes first, because every French term is explained once at first use. The certificat d’immatriculation is the French vehicle registration certificate, the document that proves a car is registered in France. The ANTS, the Agence nationale des titres sécurisés, is the national agency whose website handles all registration applications online; there is no longer a counter at the préfecture for this. The contrôle technique is the French periodic roadworthiness test, broadly the equivalent of the British MOT but run under French rules and valid only when carried out by an approved French centre. The customs clearance certificate, often called form 846 A, is the paper issued by French customs proving that a vehicle arriving from outside the European Union has completed import formalities. The quitus fiscal is the tax clearance issued by the French tax office for vehicles arriving from inside the European Union; since Brexit a car from Britain normally needs the customs route rather than this intra-Union paper. The certificat de cession is the signed sale declaration recording the transfer of a vehicle from seller to buyer. Finally, the certificat provisoire d’immatriculation, known as the CPI, is a temporary registration certificate that allows circulation while the final document is prepared.
I. How do I register a UK car in France after Brexit and how fast must I act?
Registration is the foundation of everything else. Without a French certificat d’immatriculation, you cannot insure on a stable basis, pass a French contrôle technique into the national record, sell cleanly, or prove lawful circulation at a roadside check, and every encounter with the police becomes a separate problem. The difficulty for British newcomers is that the process now combines three layers that were invisible while the United Kingdom was in the European Union: customs clearance as a third-country import, proof of vehicle approval for a car built for the British market, and the online ANTS application itself. Take them in order and the file moves. Skip one and the application stalls for months.
A. Where do customs clearance and the ANTS application fit after Brexit?
The starting point is a straightforward rule in the French Highway Code, the Code de la route: Article R322-1 provides that “Tout propriétaire d’un véhicule à moteur autre qu’un cyclomobile léger, d’une remorque dont le poids total autorisé en charge est supérieur à 500 kilogrammes ou d’une semi-remorque et qui souhaite le mettre en circulation pour la première fois doit faire une demande de certificat d’immatriculation en justifiant de son identité”. In ordinary terms, any owner who wishes to put a motor vehicle into circulation for the first time must apply for a French registration certificate and prove who they are. The same article allows the application to be sent “soit directement par voie électronique, soit par l’intermédiaire d’un professionnel de l’automobile habilité”, which is the legal basis for the two routes every Briton actually uses: the ANTS website directly, or a registered garage or prestataire acting as intermediary.
Because the United Kingdom left the European Union, a car driven over from Kent or shipped from Southampton now arrives from outside Union customs territory, and that changes the supporting file. Before Brexit no customs paper was needed at all. Since Brexit the vehicle-import procedure published by French customs applies: the car must be presented to customs, import VAT and where relevant customs duty must be settled, and the clearance certificate commonly called 846 A is issued as proof. Keep that certificate with the care you would give the logbook itself, because ANTS will ask for evidence that the customs position is regular before it issues a French number. The official vehicle-import page on douane.gouv.fr sets out the third-country arrival route, and the general registration page on service-public.fr lists the supporting documents for a first registration in France. Readers coming from the British side can cross-check the mirror position in the British government guidance on driving abroad, which explains that national registration and licensing rules apply once a vehicle is based overseas.
Two practical consequences follow for British households. First, budget for the customs and tax layer as well as the registration fee itself: a car imported permanently since Brexit can attract French import VAT at the standard rate and, depending on origin and preference rules, customs duty, on top of the regional horsepower tax charged on the certificat d’immatriculation. Second, do not confuse the customs certificate with the old intra-Union quitus fiscal. Friends who moved before 2021 will tell you they simply collected a tax clearance from the local tax office. That was the European Union route. A car arriving from Britain today follows the third-country route, and presenting the wrong paper is one of the commonest reasons ANTS asks for further evidence and the file loses six weeks.
The second layer is vehicle approval. Article R322-1 requires the owner to show either conformity of the vehicle with an approved European or national type or individual approval of that particular vehicle. For a standard British-market car with a European Certificate of Conformity, known as the COC, this step is normally a paperwork check: the COC number goes into the ANTS file and the characteristics match. For a modified car, a very old car, a personal import without a COC, or a model never type-approved for continental Europe, France requires individual approval, the réception à titre isolé, through the regional environment authority, the DREAL. Right-hand drive in itself does not block registration, but headlamp alignment, fog lamp position and speedometer display in kilometres per hour are checked, and the approval body can require adjustments before it signs off. Start this step early if your car is anything other than a standard recent model, because a DREAL appointment can take longer than the customs step and the ANTS clock does not pause while you wait.
Where the car is already registered in France and you have simply bought it from its previous keeper, the deadline is short and written into the Code. Article R322-5 states that “Le nouveau propriétaire d’un véhicule déjà immatriculé doit, s’il veut le maintenir en circulation, faire établir, dans un délai d’un mois à compter de la date de la cession, un certificat d’immatriculation à son nom dans les conditions prévues à l’article R. 322-1”. One month from the sale date, not from the day you find time to open an ANTS account. The same article adds a breathing space: “Le nouveau propriétaire peut circuler à titre provisoire et pendant une période d’un mois à compter de la date de la cession sous couvert soit du coupon rempli du certificat d’immatriculation s’il existe, soit d’un certificat provisoire d’immatriculation.” Keep the filled-in detachable coupon or the CPI in the car during that month. After it expires, there is no second grace period in the text.
Where you move house within France with the car you have already registered, a parallel one-month rule applies. Article R322-7 provides that “Tout propriétaire d’un véhicule soumis à immatriculation doit, dans le mois qui suit le changement de domicile, de siège social ou d’établissement d’affectation ou de mise à disposition du véhicule, adresser par voie électronique une déclaration au ministre de l’intérieur l’informant de ce changement.” British newcomers miss this more often than they expect, because the move from a temporary holiday let to a permanent address three months later counts as a change of domicile for this purpose. Update the address online within the month and keep the confirmation. Fines and removal orders follow the registered address, and an out-of-date address is how a small penalty becomes a missed deadline and then a major one.
B. Can my British insurance, MOT and roadworthiness cover me while I wait?
The short answer is that nothing British, on its own, puts the French file right. A UK insurance certificate, a current MOT and a valid British logbook, the V5C, are useful evidence of history, but none of them replaces the three French proofs ANTS will ask for: customs regularity, approval, and French compulsory insurance. Organise the wait around those three, and use the temporary circulation papers the Code expressly allows rather than hoping British documents will satisfy a French roadside check.
French law makes insurance a precondition of circulation, not an optional extra after registration. The Insurance Code, the Code des assurances, states in Article L211-1 that “Toute personne physique ou toute personne morale autre que l’Etat, dont la responsabilité civile peut être engagée en raison de dommages subis par des tiers résultant d’atteintes aux personnes ou aux biens dans la réalisation desquels un véhicule est impliqué, doit, pour faire circuler celui-ci, être couverte par une assurance garantissant cette responsabilité, dans les conditions fixées par décret en Conseil d’Etat.” The criminal chamber of the Court of Cassation has applied this logic strictly for decades: where a vehicle has in fact been driven, it falls under the insurance obligation. In a 1988 ruling on a vehicle that had plainly been used, the Court endorsed reasoning that pourvoi no. 87-83.306 of 19 December 1988 records as follows: “que le véhicule a effectivement circulé et se trouvait dès lors par l’usage qu’en a fait Christophe Y…, soumis à l’obligation d’assurance de l’article L 211-1 du Code des assurances”. If the wheels turn on a public road, the insurance obligation bites, whatever the number plate says.
In practice, contact a French insurer as soon as the car physically arrives, and do not wait for the French registration number. Insurers can cover a car in the course of registration on the chassis number, known as the VIN, together with the British registration and the customs papers, then transfer the policy onto the French number when it issues. Ask expressly for a certificate that French police will recognise, keep it in the vehicle, and check the territorial clause before assuming a UK policy extended for European travel covers a car now habitually based in France. Many British motor policies limit European use to a set number of days per year for a UK-resident policyholder; once you live in France and the car sleeps in France every night, that clause can leave you driving uninsured in the French sense even while the British direct debit continues. An insurer that later proves the risk description was wrong can raise non-disclosure, so declare the French address, the French use and the pending registration from day one.
Roadworthiness follows the same logic of French soil, French test. The Highway Code requires light vehicles to undergo periodic inspection under Article R323-22: “D’un contrôle technique dans les six mois précédant l’expiration d’un délai de quatre ans à compter de la date de leur première mise en circulation”, then a repeat test every two years. A British MOT, however recent, does not count as a French contrôle technique for the registration file or for ongoing circulation once the car is French-registered. Book an approved French centre early, because ANTS can ask for proof that a vehicle over four years old meets the inspection conditions, and because a failure sheet with a two-month repair deadline is far easier to manage before the police ask the same question at the roadside. Keep the headlamp, tyre, braking and emissions points in mind for an ex-British car: alignment for driving on the right, tyres and brakes after a loaded Channel crossing, and emissions on an older petrol or diesel engine are the frequent failure items.
While the file is being built, circulate only under a paper the Code recognises. Article R322-3 states that “la circulation d’un véhicule est autorisée sous couvert d’un certificat provisoire d’immatriculation, d’un coupon détachable dûment rempli, d’un certificat W garage”, and certain further temporary documents it lists. That is the closed list that matters: CPI, correctly completed detachable coupon, garage certificate, and the other named transit papers. A British logbook, a ferry ticket and a polite explanation are not on it. If ANTS has issued a CPI, carry it. If you are within the one-month coupon window after buying a French-registered car, carry the coupon. If you have neither, park the car and use other transport until you do. Judges show little sympathy for drivers who knew the file was incomplete and drove anyway.
II. What fines, insurance charges and sale traps follow if I keep UK plates?
British drivers who keep UK plates for convenience usually discover the file through a roadside check, a camera fine sent to an old address, or a letter from the previous keeper demanding money. Each of those moments has its own rule, its own amount and its own challenge route. The pattern is consistent: the fixed penalty looks modest on paper, the side consequences, immobilisation, a criminal file for no insurance, months of fines accumulating on the wrong person after a sale, are what make the matter expensive. Read this second part as a map of those consequences and the practical defences that actually work.
A. How much is the fine, can the police immobilise the car, and where does no insurance turn criminal?
Driving without having obtained the required registration certificate is a fourth-class contravention. The Code states the penalty in the registration articles themselves, and the amounts sit in the general criminal rules. The Code of Criminal Procedure fixes the standard fixed fine in Article R49: “135 euros pour les contraventions de la 4e classe”. The Criminal Code sets the ceiling in Article 131-13: “750 euros au plus pour les contraventions de la 4e classe”. In daily practice the officer issues a 135 euro fixed penalty, reduced or increased according to speed of payment under the standard amende forfaitaire rules, and the court can go higher within the ceiling for repeat or aggravated cases. The same fourth-class level applies to misuse of a temporary circulation paper: Article R322-3 punishes use of a provisional document outside its conditions with the fourth-class fine and adds that immobilisation can follow.
Immobilisation is the power British drivers underestimate most. Article L325-1 allows vehicles to “être immobilisés, mis en fourrière, retirés de la circulation et, le cas échéant, aliénés ou livrés à la destruction” where circulation or parking in breach of the Code, insurance rules or related regulations threatens safety, recovery rights, public order or the normal use of public roads. The measure can be ordered by the mayor or the territorially competent judicial police officer, and by designated officers acting within their powers. In plain terms, the police who stop a UK-plated car with no French registration, no recognisable insurance and no inspection can immobilise it on the spot, call a recovery truck, and leave the driver to continue on foot. Release then requires producing the missing papers and paying recovery and pound, fourrière, charges that accumulate daily. For a family car this is disruptive. For a car needed for work or school runs it can be the moment the file becomes urgent.
No insurance is a different scale of trouble: a criminal offence, a délit, not a contravention. Article L324-2 provides that “Le fait, y compris par négligence, de mettre ou de maintenir en circulation un véhicule terrestre à moteur ainsi que ses remorques ou semi-remorques sans être couvert par une assurance garantissant sa responsabilité civile conformément aux dispositions de l’article L. 211-1 du code des assurances est puni de 3 750 euros d’amende.” Negligence is enough; the prosecution does not have to prove you deliberately drove uninsured. Additional penalties can include community service, day-fines, suspension or cancellation of the driving licence for up to three years, a ban on driving certain motor vehicles for up to five years, a road-safety course at your expense, and confiscation of the vehicle where you own it. The same article allows the case to be extinguished by a 500 euro fixed criminal fine, reduced to 400 euro if paid quickly and increased to 1,000 euro if paid late, under the standard criminal fixed-fine procedure. That fixed route is common for first cases, but it still leaves a criminal record entry and must be declared where official forms ask about convictions.
Challenges exist, but they are procedural and evidential rather than sentimental. For a fourth-class fixed fine, the standard route is contestation of the amende forfaitaire within the deadline on the notice, with reasons and supporting papers: CPI, coupon, insurance certificate, customs receipt, ANTS acknowledgment. A request for a hearing before the police court, the tribunal de police, moves the case from automatic processing to judicial examination, where the judge checks the facts and the paperwork rather than the story of the crossing. For immobilisation and impoundment, act within days: identify the ordering authority, produce the missing documents, pay what releases the vehicle, and separately contest the underlying penalty so that storage costs stop growing while the legal argument continues. For an insurance allegation, the defence file is the policy itself: cover note, territorial clause, premium receipts, chassis number correspondence with the registration file, and any letter from the insurer confirming continuous cover. Where the allegation rests on a database flag rather than the absence of a real policy, that paper trail closes the case quickly. Where there truly was no valid cover, the realistic objective narrows to the fixed fine and avoiding the additional penalties, through prompt reinsurance, a clean record and a documented explanation of the misunderstanding, ideally before the prosecutor decides the orientation of the case.
B. Who pays the fines after a sale, and what checklist closes the file?
The most painful British car files in France are not imports at all but sales where the paperwork never followed the keys. A Briton sells a French-registered car to another Briton, hands over the crossed-out registration certificate and the signed certificat de cession, and assumes the buyer will register within the month. The buyer drives on, cameras flash, and every fine arrives at the seller’s French address because the national register still names the seller. A January 2026 decision of the Évry court for local disputes shows the pattern and the remedy. In Tribunal judiciaire d’Évry, judgment of 29 January 2026, RG no. 25/01197, the seller had handed over the transfer documents at the sale and later pursued the buyer for fines that kept arriving. The judgment records the starting facts as follows: “Le certificat de cession du véhicule daté du 04 février 2023 a été remis à Madame [O] [D] [W] ainsi que le certificat d’immatriculation barré portant la mention « vendu le 04 février 2023 ».” The seller then sent a formal demand to complete the change of holder and sued for reimbursement of fines already paid plus those still owed, together with penalty payments for delay and moral damages. The court ordered the buyer to evidence the new registration and dealt with the financial claims on their merits. The lesson for British sellers is direct: handing over the barred certificate is only half the job. File your own seller’s declaration online immediately, keep the acknowledgment, and if fines arrive afterwards, contest each one as the recorded seller with the sale declaration attached while pursuing the buyer for reimbursement. The lesson for buyers is symmetrical: register within the month under Article R322-5, because every week of delay builds a debt to the seller that a court can later quantify.
The same discipline applies to camera fines received while the car still wears British plates. Speed, red light and telephone offences are processed through the automated system and, for foreign plates, through European vehicle-data exchange and the address the system holds. Contest within the deadline on the notice where the facts support it: wrong driver identification, vehicle already sold with declaration attached, number-plate misread, or procedural defect. Paying without designating the driver where the law requires designation can create a separate liability for the keeper, so read the notice carefully before choosing between payment, designation and contestation. Where the notice follows an out-of-date French address because the Article R322-7 declaration was never made, fix the address first, then contest within the remaining time with proof of the move. An uncollected letter that expires at the post office still counts as notified in many cases, so collect registered mail and diarise every deadline.
The closing checklist for a British household bringing a UK car to France can be stated in seven steps. First, on arrival, photograph the British plates, the V5C, the MOT history, the mileage and the chassis number, and store the customs paperwork with them. Second, complete customs presentation and obtain the clearance certificate, keeping the original and a scan. Third, secure the approval paper: COC for a standard car, or DREAL individual approval with any required adaptations for anything unusual. Fourth, take out French insurance declared on the chassis number and the French address from day one, keep the certificate in the car, and transfer the policy onto the French number when it issues. Fifth, file the ANTS application with identity, domicile, insurance, approval and customs proofs, and circulate only under the CPI or coupon while waiting. Sixth, once registered, book the French contrôle technique cycle, update the address within a month of any move, and keep every acknowledgment. Seventh, if you sell, file the seller’s declaration the same day and keep proof; if you buy, register within the month. A file kept in this order rarely needs a lawyer. A file kept in the opposite order usually does.
Two related tax points deserve a brief mention so they do not ambush the household budget. The Court of Cassation has confirmed in the registration-tax context that liability follows the owner at the point of first circulation and the issue of the certificate, a principle illustrated by Court of Cassation, Commercial Chamber, 9 June 2015, appeal no. 14-10.543, where a company acquiring new vehicles for re-export disputed the registration-tax assessment tied to first registration. The reasoning turned on the link between the tax and the issue of the certificate to the owner. For a British family the parallel is practical: the year of first French registration concentrates customs, VAT, approval and horsepower-tax costs in a single quarter, so budget the whole sequence before starting rather than discovering each fee as the previous one is paid. Separately, drivers who also face licence questions should treat them as a distinct file: exchanging a British driving licence through ANTS obeys its own conditions and deadlines and is not covered by the vehicle-registration steps above. Keep the two files separate and give each its own acknowledgments and diary.
Conclusion
Bringing a British car to France after Brexit is entirely lawful, but it is no longer a matter of driving on and sorting the papers later. Customs regularity comes first, approval second, French insurance third, and the ANTS application fourth, with circulation only under a recognised temporary paper while the file is built. The fixed fine for missing registration looks small at 135 euros until immobilisation, pound charges, an insurance prosecution at up to 3,750 euros, or months of camera fines after an undeclared sale multiply the bill. The courts apply these rules as written: a vehicle that has in fact circulated needed insurance, a buyer who never re-registered owes the seller whose name kept receiving the fines, and a tax linked to first registration follows the owner at that point. Work through the seven-step checklist in order, keep every acknowledgment, update the address within the month, and contest arguable penalties within their deadlines with documents rather than explanations. Handled that way, the British car outside the French house stops being a liability and becomes simply a car, French-plated, French-insured and French-tested, ready for normal life on the right-hand side of the road.
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If the police have stopped your UK-plated car, ANTS has asked for further evidence, or fines keep arriving after a sale, our firm offers a telephone consultation within 48 hours with a lawyer of the firm. Call +33 6 46 60 58 22 or write via our contact page. The firm advises clients in Paris and Île-de-France as well as British residents and second-home owners throughout France.