Renting a car in the EU works differently than in the US, mostly because you're crossing borders and dealing with different insurance rules, fuel types, and road laws in each country

When you rent from a major company like Hertz, Avis, or Europcar, the basic process is familiar: you book online or at a counter, show your driver's license and passport, and drive away. But EU rentals add real complications. Your US insurance may not cover you abroad. Fuel is sold by the litre, not the gallon. Speed limits, toll systems, and parking rules change the moment you cross a border. Rental companies charge differently for crossing borders, returning a car in a different country, and adding an extra driver. Understanding these costs and requirements before you book saves money and prevents problems at pickup.

Key Takeaways

  • Your US auto insurance and credit card coverage often do not extend to rentals in the EU, so you will need to buy the rental company's insurance or an international policy before you pick up the car.
  • An International Driving Permit (IDP) is not legally required in most EU countries if you have a valid US license, but some rental companies and police may ask for one, so getting one costs about $20 and removes the risk.
  • Crossing borders with a rental car usually costs extra and requires advance notice to the rental company; some companies charge per border crossing, others charge a flat fee for multi-country travel.
  • Fuel, tolls, and parking work differently in each country—fuel is sold by the litre, many highways charge tolls you pay at booths or online, and city parking often requires buying a permit or using an app.
  • Returning a car in a different country than where you rented it typically costs significantly more, so compare one-way fees against renting separate cars in each country.

Insurance and liability coverage for EU rentals

Your US auto insurance policy almost never covers a rental car in Europe. Your credit card rental protection (if you have it) may not either—most cards exclude rentals outside North America or require you to decline the rental company's insurance, which most EU companies will not allow. Before you book, call your insurance company and your credit card issuer to ask what they cover abroad. Write down the answer and the date you called.

You have three options at pickup. First, buy the rental company's insurance: Collision Damage Waiver (CDW) and Theft Protection (TP) are standard add-ons, usually $15–$30 per day depending on the car and country. Second, buy a separate international rental car insurance policy from a company like Allianz or World Nomads before you leave the US; these often cost less than daily rental company rates and cover multiple rentals. Third, some credit cards and travel insurance policies do cover EU rentals if you meet specific conditions—read the fine print before you rely on it. Most rental companies require you to carry at least third-party liability insurance (required by law in every EU country), and they will charge you if you decline their coverage and then cause damage.

International Driving Permit and license requirements

You do not legally need an International Driving Permit (IDP) to drive in any EU country if you have a valid US driver's license. However, some rental companies require one, and some police officers may ask for one during a traffic stop. An IDP is a translation of your license into multiple languages and costs about $20 from the American Automobile Association (AAA). It is valid for one year and takes about 15 minutes to obtain at an AAA office if you bring your license, a passport photo, and the process form.

Whether you get one or not, always carry your actual US license, your passport, and your rental agreement. EU police will not accept an IDP alone—it is a supplement, not a replacement. If you plan to drive in multiple countries or rent a car for more than a few days, the $20 cost is worth the peace of mind.

Border crossings and multi-country travel fees

Renting a car in one EU country and driving to another is legal, but rental companies charge for it. Before you book, tell the rental company which countries you plan to visit. Some companies charge a flat fee (often €50–€150) to allow cross-border travel. Others charge per border crossing. A few include it free if you rent for a certain number of days. If you do not declare your route and cross a border anyway, you may void your insurance and face fines.

Some countries require a Green Card (an international insurance certificate) to prove your rental car is insured. The rental company provides this automatically in most cases, but confirm it is in your paperwork before you leave the lot. A few countries, including Bosnia and Serbia, require additional documents or insurance supplements if you plan to enter them. If your itinerary includes any country outside the EU, ask the rental company whether your insurance and rental agreement cover it—many do not.

Fuel, tolls, and parking across different countries

Fuel is sold by the litre throughout the EU, and prices vary widely by country. A litre is about 0.26 gallons, so multiply the price per litre by roughly 3.8 to estimate the US gallon equivalent. Most rental cars run on diesel or unleaded petrol (95 or 98 octane). The rental agreement will specify which fuel type your car uses—putting the wrong fuel in the tank can damage the engine and trigger expensive repair charges. Fill up before you return the car, or the rental company will charge you a premium rate (often double the local price) to fill it themselves.

Tolls are common on highways in France, Spain, Italy, Austria, and the Czech Republic. Some countries use toll booths where you pay cash or card as you exit. Others use electronic systems: France uses Liber-t tags, Austria requires a vignette (a sticker you buy and display), and some countries use number-plate recognition and send you a bill later. Ask the rental company which toll system applies to your route and whether they will handle it or charge you to use their tag. Parking in city centres often requires buying a permit from a machine or using an app like EasyPark or ParkWhiz. Parking illegally can result in fines of €50–€200 and towing.

One-way rentals and drop-off fees

Returning a car in a different country or city than where you rented it costs extra. A one-way rental from Paris to Rome might cost €200–€400 more than a round-trip rental, depending on the company and how far apart the cities are. Before you book, compare the one-way fee against the cost of renting two separate cars—one in each country for the portion of your trip you spend there. Sometimes two rentals are cheaper, especially if you are splitting your time evenly between two regions.

Some companies charge a flat one-way fee; others charge based on distance or the specific route. Budget and Europcar often have lower one-way fees than Hertz or Avis. Check the terms carefully: some one-way rentals require you to return the car during business hours at a staffed location, while others allow 24-hour returns at unstaffed drop-off points (which may cost more). If you return a car late or with damage, one-way rentals sometimes have stricter penalties than round-trip rentals.

What to check before you pick up the car

When you arrive at the rental counter, do not sign anything until you have reviewed the agreement line by line. Confirm the daily rate, the insurance coverage you are paying for, any fees for crossing borders or one-way drops, and the fuel policy. Take photos or video of the car's exterior and interior, including the odometer and fuel gauge, before you drive away. The rental company should do a walk-around with you and note any existing damage on the agreement—if they do not, point it out and ask them to document it.

Check that the car has a spare tyre, a jack, a warning triangle, and a high-visibility vest (required by law in most EU countries). Confirm the fuel type and whether the car uses a manual or automatic transmission. Ask where the nearest petrol station is and whether the rental company has a 24-hour roadside information number. Keep all paperwork—the rental agreement, insurance documents, the Green Card, and toll receipts—in the car at all times. If you are stopped by police, you will need to show them.

Frequently Asked Questions

Do I need an International Driving Permit to rent a car in Europe?

No, a valid US driver's license is sufficient by law in every EU country. However, some rental companies require an IDP, and carrying one eliminates any ambiguity if you are stopped by police. An IDP costs about $20 from AAA and takes 15 minutes to obtain.

What happens if I cross a border without telling the rental company?

You may void your insurance and face fines from the rental company. Always declare your route when you book. If your plans change and you decide to visit a country you did not mention, call the rental company when ready and ask whether your current agreement covers it.

Can I return a rental car in a different country than where I rented it?

Yes, but one-way rentals cost significantly more—often €200–€400 extra depending on the distance. Compare this cost against renting two separate cars in each country before you book.

What should I do if the rental car breaks down or is in an accident?

Call the rental company's 24-hour roadside information number when ready. Do not leave the car unattended. If there is an accident, take photos, get the other driver's information and insurance details, and file a police report if required by local law. Report the damage to the rental company before you return the car.

Will my US credit card rental insurance cover a car rental in Europe?

Most credit card rental protections do not cover rentals outside North America, and many that do require you to decline the rental company's insurance—which most EU companies will not allow. Call your credit card issuer before you travel to confirm what is covered.