Renting a car in Lisbon works differently than in most US cities, and the differences matter before you hand over your money
You can rent a car in Lisbon through the same international chains you know — Hertz, Avis, Budget, Europcar — plus local operators. But European rental contracts include mandatory third-party liability insurance (included in the price), charge by the day rather than by the hour, and often come with a fuel policy that requires you to return the car full. Prices vary sharply by season: summer (June through August) runs two to three times higher than winter. Most rental desks sit at Humberto Delgado Airport, in the city center near Rossio Square, or at train stations. You'll need your US driver's license, an International Driving Permit (IDP), a credit card in your name, and a passport.
Key Takeaways
- You must carry an International Driving Permit alongside your US license; a license alone is not legal in Portugal, even though rental companies may not always check.
- Third-party liability insurance is legally required and included in every rental price, but collision and theft coverage (CDW/SCDW) costs extra and is not automatically included.
- Most rentals use a "full-to-full" fuel policy, meaning you pay for a full tank upfront and must return the car full, or you pay inflated per-liter rates for any shortfall.
- Summer rates (June–August) are roughly double or triple winter rates, and booking at least two weeks ahead usually saves 20–40 percent compared to walk-up desk prices.
- Parking in central Lisbon is scarce and expensive; if you're staying in the city, renting makes sense only for day trips outside the city limits.
Getting an International Driving Permit before you leave the US
Portugal recognizes a US driver's license only when paired with an International Driving Permit. This is a translation document, not a separate license. You get it from the American Automobile Association (AAA) or the American Automobile Touring Alliance (AATA) before you travel — you cannot obtain one in Portugal or at the airport.
The AAA charges $20 and issues the permit on the spot at any local office if you bring your valid US driver's license, a passport-sized photo, and a completed process form (Form DS-11 or equivalent). The AATA charges $15 and processes by mail in about two weeks. Both are valid for three years. Rental companies at the Lisbon desk will ask for both your US license and the IDP; driving without the IDP is technically illegal in Portugal, though enforcement is inconsistent. Carry both documents in your wallet at all times while driving.
Understanding insurance and what it actually covers
Third-party liability insurance — coverage for damage you cause to other people or their property — is mandatory by Portuguese law and is always included in your rental rate. You cannot opt out. This covers the other party's injuries and vehicle damage, not yours.
Collision and theft coverage is separate and optional. Rental companies call this CDW (Collision Damage Waiver) or SCDW (Super Collision Damage Waiver). CDW typically costs €12–20 per day and reduces your financial responsibility if you damage the rental car to a set amount (often €500–1,000). SCDW costs more (€18–30 per day) and lowers your liability further or eliminates it entirely. Neither is included unless you pay extra.
Check whether your personal auto insurance or credit card covers rental cars abroad before you book. Many US credit cards (especially premium cards) include rental car coverage in Europe, which can save you €100–200 over a week-long rental. Call your card issuer and your insurer to confirm coverage limits and what you need to do to set up it — usually you must decline the rental company's CDW and charge the full rental to that card. If you decline CDW and have no backup coverage, you are liable for the full repair cost if the car is damaged.
Fuel policies and how they affect your final bill
Most Lisbon rental companies use a full-to-full fuel policy. You pay for a full tank of fuel when you pick up the car (usually €60–90 depending on car size and current fuel prices). You must return the car with a full tank. If you return it with less fuel, the company charges you per liter at a rate that is typically 30–50 percent higher than the pump price — sometimes €1.80–2.20 per liter when the actual price is €1.40–1.60.
A few companies offer a "fuel included" option where you pay a flat rate upfront for unlimited fuel. This costs more per day but removes the risk of overpaying at the end. Compare the two: if you're renting for three days and the full-to-full policy costs €75 for fuel plus €45 per day for the car, that's €210 total. If the fuel-included option costs €60 per day, that's €180 — a savings if you don't use much fuel. If you drive heavily, the math flips. Ask the rental desk for both prices before you commit.
Booking online versus at the desk, and when each makes sense
Online booking through Rentalcars.com, Kayak, or directly through the rental company's website is almost always cheaper than walking up to the desk. Advance bookings typically run 20–40 percent less than same-day rates, especially in summer. You also lock in the price and avoid surprises.
Book at least two weeks ahead if you're traveling June through August. If you're traveling in shoulder season (April–May or September–October), one week ahead usually suffices. Winter bookings (November–March) can often be made a few days before arrival without a major price penalty.
When you book online, the quoted price usually includes third-party liability insurance but not CDW, fuel, or airport fees. Read the fine print to confirm what's included. At the desk, agents will try to sell you CDW, GPS rental, and other add-ons; if you've already decided you don't want them, say so clearly and they will stop asking. Desk agents also have limited authority to negotiate on price, so booking in advance is your real leverage.
Where rental desks are located and how to get there
The largest concentration of rental desks is at Humberto Delgado Airport (LIS), about 7 kilometers north of central Lisbon. All major companies have counters in the arrivals hall. The airport is connected to the city by the Red Line metro (Linha Vermelha), which runs to Rossio Square in about 25 minutes for €1.50. A taxi or Uber costs €15–25 depending on traffic.
City-center desks are located near Rossio Square (Hertz, Avis, Budget, Europcar) and at Santa Apolónia train station. These are useful if you're staying in the city and want to pick up a car for a day trip without going to the airport. Prices at city desks are sometimes slightly higher than at the airport, so compare before booking.
Driving in Lisbon and when renting actually makes sense
Lisbon's city center is hilly, narrow, and congested. Parking in the Baixa (downtown) costs €2–4 per hour at street meters or €20–30 per day in garages. Traffic is heavy during rush hours (7–10 a.m. and 5–8 p.m.). If you're staying in the city for sightseeing, public transit (metro, tram, bus) is faster and cheaper than driving.
Renting makes sense if you're taking day trips to Sintra (mountain palaces, 30 km northwest), Cascais (beach town, 30 km west), or the Douro Valley wine region (100 km northeast). For these trips, a car saves time and gives you flexibility that public transit doesn't. If you're staying only in Lisbon proper, skip the rental and use the metro and trams.
Driving rules: Portugal drives on the right. Speed limits are 50 km/h in cities, 90 km/h on regional roads, and 120 km/h on motorways (autoestradas). Tolls on motorways are charged electronically; rental companies add a processing fee (€5–10) to your bill if you use them. Seatbelts are mandatory. Headlights must be on during the day on motorways. Parking violations and speeding tickets can be issued to the rental company and then charged to your credit card weeks after you return the car.
Frequently Asked Questions
Do I need an International Driving Permit if I'm just renting a car?
Yes. Portuguese law requires you to carry both your US driver's license and an International Driving Permit. Rental companies will ask for both at the desk. Get the IDP from AAA or AATA before you travel; you cannot obtain one in Portugal.
What happens if I return the car with an empty fuel tank?
You'll be charged per liter at the rental company's rate, which is typically 30–50 percent higher than the pump price. On a full tank, this can add €30–50 to your bill. Always refuel at a gas station near the airport or city center before returning the car.
Can I drive to other countries from Lisbon?
Yes, but inform the rental company in advance. Most companies allow driving to Spain and other EU countries at no extra charge, but some charge a one-time fee (€15–30) or require you to purchase additional coverage. Check your contract or ask at the desk before you book.
Is it cheaper to book through a travel website or directly with the rental company?
Travel websites (Rentalcars.com, Kayak, Hertz.com) often show the same prices, but occasionally one is cheaper by a few euros. Book through whichever shows the lowest total price including all fees. Read the cancellation policy: some travel sites charge a fee to cancel, while the rental company's own site may allow free cancellation up to 24 hours before pickup.
What if the rental car breaks down while I'm driving?
Call the rental company's roadside information number (provided in your contract). They will either send a mechanic or arrange a replacement vehicle. You are not responsible for mechanical failures unless the damage was caused by misuse on your part. Keep the contract and roadside information number accessible while driving.