How motor insurance works across borders
Every country requires drivers to carry at least third-party liability insurance, which pays for injury or damage caused to others. The question when crossing a border is whether the foreign authorities recognise your policy, and whether victims in that country can claim against it.
The Green Card system, coordinated by the Council of Bureaux in Brussels, answers both. Each member country has a national bureau that guarantees claims caused by foreign visiting vehicles and handles them locally, so a victim never has to chase an insurer abroad.
Where a Green Card is no longer needed
Within the European Economic Area, Switzerland and several neighbouring states, the number plate itself serves as proof of insurance. Since 2 August 2021 this also applies to UK-registered vehicles entering the EU, so British drivers no longer need a physical Green Card there.
Where proof is still required
Drivers heading to member countries outside that zone, such as Turkey, Morocco or some Western Balkan and Eastern European states, should carry a Green Card issued by their insurer. Requirements change, so the destination's national bureau or the insurer should confirm before departure.
Countries outside the system
Where a country is not part of the Green Card system, drivers usually buy frontier insurance at the border or a local policy before entering. That cover is often only third party, so damage to your own vehicle may remain uninsured unless a separate policy exists.
What your policy covers abroad
Compulsory cover abroad is set at the higher of your home country's minimum and the visited country's minimum. Comprehensive cover is a different matter: many insurers reduce it to third party abroad, cap the number of days or charge an extension fee for longer trips.
| Situation | Proof of insurance | Point to check |
|---|---|---|
| Own car within EEA and partner states | Number plate; carry policy documents | Duration of comprehensive cover abroad |
| Own car to Green Card members outside that zone | Green Card from your insurer | Country code not crossed out on the card |
| Own car to non-member countries | Frontier or local insurance | Own-damage cover usually excluded |
| Hire car abroad | Rental company's policy | Excess, cross-border permission, deposit |
| Car with foreign plates after moving | Temporary validity only | Deadline to register and insure locally |
Hire cars and the excess problem
Rental prices usually include basic liability and a collision damage waiver with a high excess. Desk staff then sell excess reduction. Standalone excess insurance bought in advance is often cheaper, but the rental company will still block the deposit on your card.
Young drivers face extra charges and age limits, often below 25 or above 75, and some companies refuse debit cards for the deposit. Reading the rental terms for the specific country, rather than the brand's general website, avoids surprises at the counter.
Steps before driving in another country
A short checklist before departure avoids most problems at borders and in claims. It applies whether you drive your own car across Europe, take a hire car into a neighbouring country or ship a vehicle as part of a longer stay.
- Tell your insurer the countries and dates and ask what cover applies abroad.
- Request a Green Card if any country on the route requires one.
- Check whether breakdown cover includes recovery in those countries.
- For hire cars, confirm in writing that crossing the border is allowed.
- Carry the registration document, licence and, where needed, an International Driving Permit.
- Keep a European Accident Statement form and the insurer's claims number in the car.
After an accident abroad
Exchange details, photograph the scene and complete a European Accident Statement if available; it exists in the same layout in many languages. Sign only what you understand. Report the accident to your insurer promptly and to the police where anyone is injured.
Errors and scams with cross-border car cover
Drivers far from home rarely know local rules or prices, which makes roadside pressure easy. The points below focus on mistakes made by tourists and newly arrived residents, including fraudulent sellers of motor cover found online or at borders.
- Buying a cheap "international car insurance" certificate online from an unregistered seller, which border police may not accept.
- Paying a stranger at a border for insurance with no receipt or official bureau stamp.
- Assuming comprehensive cover applies abroad for the whole trip.
- Taking a hire car across a border without written permission from the rental company.
- Signing an accident report in a language you do not understand.
- Driving on foreign plates long after moving, when local registration is required.
Do I need a Green Card to drive from the UK to France?
No. Since August 2021 UK vehicles entering EU countries do not need a Green Card, though you should carry your insurance certificate and registration document. A Green Card is still needed for some non-EU destinations, so check routes passing through other countries.
Does my car insurance cover me in Morocco or Turkey?
Both are Green Card members, so your insurer can issue a card for them, sometimes for an extra fee. Without it, drivers must buy local frontier insurance at the border. Confirm that the country code appears uncrossed on the card.
Can a resident of one country insure a car registered in another?
Usually not for long. Insurers generally cover vehicles registered in their own country, and residents must register an imported car locally within a set period. Specialist policies exist for cross-border workers, but rules differ between countries.
Who pays if a foreign driver hits me?
Under the Green Card system, the national bureau or the visiting driver's insurer's local representative handles the claim in your country and language. If the foreign vehicle was uninsured, a national guarantee fund may compensate victims, subject to local rules.
Is US rental car liability cover enough for visitors?
Not always. Minimum liability limits in many US states are low compared with potential injury claims. Visitors often add supplementary liability insurance at the counter or buy a package that includes it; checking the limit before arrival is sensible.
Useful organisations and resources
- BAAR: Romanian Motor Insurers' Bureau brochure — A national bureau brochure describing its role in protecting victims of cross-border road accidents under the Green Card system.
- International Motor Insurance Card System (overview) — A general reference on the history of the Green Card system, its member countries and how national bureaux cooperate.
- UN Digital Library: Council of Bureaux report — A report by the President of the Council of Bureaux to the UN road transport bodies on the functioning of the system.
Official and legal references
- Motor Insurers' Bureau: the Green Card system explained — The UK national bureau describing the two aims of the Green Card system and how claims involving foreign vehicles are handled.
- National Bureau of Insurers (Switzerland): international motor insurance card — The Swiss bureau explaining when drivers need the international motor insurance card and where it is valid.