Driving across a border can be the highlight of a road trip. It goes smoothly when your documents, your insurance and your car’s paperwork are all in order before you reach the booth.
Road notes
- To return to the U.S. by land, citizens generally need a passport, passport card, trusted traveler card such as NEXUS or SENTRI, or an Enhanced Driver’s License.
- Mexico doesn’t recognize U.S. auto insurance for liability; you need a policy from a Mexican-licensed insurer.
- Driving beyond Mexico’s border free zone usually requires a temporary vehicle import permit; the Baja California peninsula is exempt.
- Many U.S. rental companies forbid taking cars into Mexico, and Canada trips usually need to be noted on the rental agreement.
Crossing into Canada or Mexico by car opens up some of the continent’s best road trips, from the Canadian Rockies to Baja’s coast. The border itself is usually the easy part, as long as you’ve handled the paperwork in advance.
ID for crossing back into the U.S.
U.S. citizens returning by land or sea generally need one of these documents:
- a U.S. passport or passport card
- a trusted traveler card, such as NEXUS, SENTRI or FAST
- an Enhanced Driver’s License, issued by Michigan, Minnesota, New York, Vermont and Washington
- an Enhanced Tribal Card, for members of participating tribes
A regular driver’s license isn’t enough on its own. U.S. citizen children under 16 can generally use a birth certificate at land crossings. Canada and Mexico set their own entry rules, so check both countries’ requirements before you go.
Driving into Canada
- Insurance: many U.S. auto policies cover driving in Canada. Ask your insurer for proof of coverage that’s valid in Canada and carry it with you.
- Rental cars: most major companies allow Canada, but you’ll usually need to tell them and have it noted on the contract.
- Customs: declare everything you’re carrying, including food, alcohol, gifts and any firearms, and know that cannabis can’t cross the border.
Driving into Mexico
| Requirement | What it involves |
|---|---|
| Mexican auto liability insurance | Required; U.S. policies aren’t accepted for liability in Mexico |
| Tourist permit (FMM) | Needed for most visitors traveling beyond the border area |
| Temporary vehicle import permit | Needed beyond the free zone; the Baja California peninsula and parts of Sonora are exempt |
| Vehicle documents | Registration and title, and permission from the lender if the car is financed |
Temporary vehicle import permits are issued by Banjercito, Mexico’s official bank for this purpose, usually with a refundable deposit. Cancel the permit when you leave Mexico, or you risk losing the deposit and problems on future trips.
Careful
Buy Mexican auto insurance from a Mexican-licensed insurer before you cross, and keep the policy with you. Driving without valid liability coverage in Mexico can mean serious legal trouble after an accident.
Rental cars and borders
Rental policies on cross-border travel vary widely. Many U.S. companies prohibit taking their cars into Mexico at all, while some allow it from certain locations with special insurance. Get the cross-border policy in writing; see our rental car guide for the other fine print.
Border waits can be long at busy times, so build them into your schedule; our fuel and budget guide helps you plan the rest of the trip’s costs.
Questions from the road
Q: Do children need passports to cross by car?
A: U.S. citizen children under 16 can generally re-enter the U.S. by land with a birth certificate. If a child travels with only one parent, bring a signed consent letter from the other parent, which Canadian and Mexican officials may ask for.
Q: Can I bring cannabis across the border?
A: No. Taking cannabis across the U.S. border in either direction is illegal, even where it’s legal on both sides.
Q: Can I bring a firearm?
A: Mexico’s gun laws are very strict, and taking firearms or ammunition into Mexico can lead to prison. Canada has strict rules and requires declaration. Check both countries’ official guidance well in advance.
Road rules, fees, closures and border requirements change. Check with the state transportation department, park, rental company or border agency before you travel. This guide is general information.
