Your Vehicle and the Mexico Border
How your vehicle type, who owns it, and what you’re towing all affect what’s required at the border — and what can go wrong.
Requirements vary by vehicleWhy Your Vehicle Changes Everything
Two people crossing the same border on the same day can have completely different requirements depending on what they’re driving and who owns it. A person in a financed 2022 truck heading to Guadalajara needs documents that someone in a paid-off 2015 SUV going to Cabo does not — and vice versa. This page breaks down how vehicle type, ownership, and towing all affect your crossing.
This guide focuses on the vehicle-specific angle. For how the vehicle permit itself works — fees, deposits, the online portal, and the border process — see the TIP permit guide.
Vehicle Types
Car or SUV
The standard case. Cars and SUVs follow the standard TIP, FMM, and insurance rules. Requirements vary by destination (Baja vs. Sonora vs. mainland), ownership, and your answers to the questionnaire — but the process is well-established and the most common crossing scenario.
Pickup
Most pickups (half-ton, three-quarter-ton, and standard one-ton) are treated the same as cars and SUVs: standard TIP rules apply, with a deposit based on the vehicle year. One practical note: truck beds are frequently inspected at the customs traffic light — remove any clutter, tools, or boxes that could raise questions.
Over 3.5 tonnes? The standard online TIP is only for vehicles under 3.5 tonnes (7,716 lb) gross vehicle weight. Heavy-duty duallies (F-450/550, RAM 4500+) and expedition trucks can exceed it — check the GVWR plate in your driver’s door jamb. If you’re over the limit, see Heavy & oversized vehicles below for the two ways to bring it in.
Motorhome or RV
Motorhomes have their own TIP category at the Banjercito and are handled differently in several important ways:
- No TIP deposit required — motorhomes are exempt from the refundable deposit that applies to cars and trucks
- Separate permit type — select “Motor Home” (not “Foreign Vehicle”) on the Banjercito online portal or at the border window
- Appliance inspection — if you register online, a Banjercito agent at the border will inspect and record the appliances and contents listed in your TIP registration. Allow extra time
- Online registration available for US and Canadian passport holders — motorhomes can use the online pre-registration portal 10–60 days before crossing. Other passport nationalities must apply in person at the border. Full online registration guide →
- Multi-year validity — motorhome TIPs are issued for years at a time, unlike the per-trip TIPs for cars (see permit validity)
Permit validity — check the date on your own permit. Banjercito’s online portal currently issues motorhome and boat permits for 10 years, and the terms you agree to on the portal still say 10. But travelers have reported 5-year permits issued at the border since 1 April 2026. Plan for 5 years, and go by the expiration date printed on your own permit — that is the only date that governs you. An expired TIP can cost you the vehicle.
If you’re towing a vehicle behind your motorhome, that towed vehicle requires its own separate TIP — including a deposit based on its model year. See the Towing section below.
Motorcycle
Motorcycles follow the same TIP rules as cars — required for mainland and Sonora-beyond-free-zone destinations, not required for Baja or the Sonora free zone. The deposit tiers are the same. Insurance is required and should be obtained from a Mexican insurer before crossing — US motorcycle insurance is not valid in Mexico. See our Mexican insurance guide.
Heavy & Oversized Vehicles — Expedition Trucks (Over 3.5 t)
The standard Banjercito vehicle permit (TIP) is capped at 3.5 tonnes (7,716 lb) gross vehicle weight. A heavier rig — a 6×6 expedition camper, a heavy-duty dually, a converted box truck — can’t use the regular online portal. That doesn’t mean you can’t bring it: travelers do cross in these vehicles every season. There are two routes, and which one applies to you comes down to how the vehicle is titled.
Route 1 — Registered as a motorhome (casa rodante)
If your title or registration lists the vehicle as a motorhome, RV, or house-car, it qualifies for the Motor Home permit — the same category used by any RV — with no weight cap:
- Multi-year permit (see permit validity) and no refundable deposit
- Registered on the “Motor Home” portal type (not “Foreign Vehicle”)
- A border officer will inspect and record the appliances and contents listed on the permit — be ready to open storage compartments
- To qualify it must be a permanently built motorhome. A removable slide-in truck camper does not count as a casa rodante — only the truck underneath is permitted, and only if it’s under 3.5 t
If this is you, that’s the easier path. Make sure the registration actually says motorhome/RV before you travel — an officer goes by the document, not by how the rig looks.
Route 2 — Special permission at the aduana
If it isn’t registered as a motorhome, you request special authorization from the aduana (customs) at the border to temporarily import it. This is done in person — there’s no online equivalent:
- Ask for the over-weight / casa-rodante import process and explain the vehicle is for personal, non-commercial use
- Bring interior and exterior photos showing it’s a personal/recreational vehicle, not a commercial hauler
- Allow extra time — it can involve a supervisor and take a few hours
- Approval is at the officer’s discretion and is not guaranteed — have a backup plan in case it’s refused at one crossing (a different port or a supervisor can give a different answer)
Don’t try to register an over-weight vehicle as a regular car online — it will be rejected, and a vehicle without a valid permit can be turned around. A genuinely heavy non-camper truck also risks being treated as a commercial import (requiring a customs broker and pedimento). When you can, call the Banjercito/aduana office at your intended crossing ahead of time.
Vehicle Ownership and Authorization Letters
Mexico requires that the person driving a vehicle be able to prove their right to take it across the border. For vehicles you own outright, your title and registration are sufficient. For any other ownership situation, a notarized authorization letter is required — and the format matters.
Financed or Leased Vehicle
If your vehicle has a lienholder — a bank, credit union, or finance company — you must carry a notarized letter from them explicitly authorizing you to take the vehicle into Mexico.
Allow 3–5 business days minimum — some lenders take longer. Contact your lienholder immediately after booking your crossing. Not all lenders will issue this letter, and some charge a fee. If your lender refuses, you cannot legally take that vehicle into Mexico.
- The letter must be on the lender’s official letterhead
- It must be notarized (not just signed)
- It should specify the vehicle (VIN, make, model, year), the authorized driver by name, and the dates or duration of the trip
- Bring the original — photocopies are not accepted
- Common lenders like Ford Credit, Chase Auto, and GM Financial issue these routinely — call the lienholder services line
Company-Owned Vehicle
If your employer owns the vehicle, you need a notarized letter on company letterhead signed by a company officer (not just a manager) authorizing you to drive the vehicle into Mexico.
- Must be on official company letterhead
- Must be notarized
- Should name the driver, the vehicle (VIN, plate, make, model), and the travel dates
- Bring the original plus one photocopy
Fleet vehicles and work trucks are a common problem area — drivers assume the company registration in the glovebox is enough. It is not. Without a notarized authorization letter, you can be turned back at the Banjercito window regardless of how legitimate your trip is.
Family Member’s Vehicle
Driving a vehicle registered to an immediate family member — a spouse, parent, sibling, or child — requires a notarized letter from the registered owner authorizing you to take the vehicle into Mexico.
A friend’s vehicle is not eligible. Banjercito only issues a non-owner TIP for an immediate family member or spouse (their permit form lists the relationship — parent, child, sibling, husband, wife). A notarized letter from a friend is not accepted, and you can be turned around at the border. If the vehicle isn’t yours or an immediate family member’s, drive a different vehicle.
- Same format: notarized, names both parties, identifies the vehicle, states the travel dates
- If the vehicle is jointly registered (e.g. both spouses are on the title), and one spouse is driving, a letter is still recommended — officers have discretion
- The owner does not need to be present, but must have signed and notarized the letter in advance
Rental Vehicle
Most major US rental car companies — Hertz, Avis, Enterprise, Budget, National — explicitly prohibit taking their vehicles into Mexico. Violating this prohibition voids your rental agreement and your coverage. You will be personally liable for any damage, theft, or loss.
Do not assume your rental can cross the border. Read your rental agreement carefully before driving to the border. If Mexico is not mentioned, call the rental company directly and get written permission — verbal approval is not sufficient.
Some companies do permit Mexico crossings with advance notice and additional insurance:
- You must obtain specific written authorization from the rental company before crossing
- US rental insurance and collision damage waivers are not valid in Mexico — you must purchase a separate Mexican insurance policy for the rental vehicle
- The Banjercito TIP requires a letter from the rental company (acting as the vehicle owner) authorizing the crossing — this is in addition to your rental agreement
- Some rental companies have Mexico-specific rental programs at border cities — these vehicles are already permitted and insured for crossing
Towing — What Needs Its Own TIP
Whether a towed item needs its own Temporary Import Permit depends on what you’re towing. A plain cargo trailer rides free on your main TIP, a livable RV trailer or large boat gets its own deposit-free permit, and a towed car or motorbike needs its own full permit with a deposit. Every towed unit needs its own title or registration in your name.
Rides Free on Your Main TIP
- Cargo or utility trailer
- Boat under 4.5m (14.7 ft)
- Recreational units — ATV, jet ski, go-kart (up to 3)
Added to your main vehicle’s TIP at no extra fee. Each still needs its own title or registration.
Needs Its Own Permit
- Travel trailer / caravan / fifth-wheel — $52.20 online / $59.16 border, no deposit
- Boat 4.5m (14.7 ft) or longer — $52.20 online / $59.16 border, no deposit
- Towed car or motorbike — $52.20 online / $59.16 border + deposit by its year
A separate permit and folio. Budget extra time at the Banjercito window.
Towing a Second Vehicle (a “Toad”)
A car, motorbike, or any drivable vehicle towed on a trailer or tow dolly requires its own full TIP — a second Foreign Vehicle permit, separate from the vehicle you are driving — including a refundable deposit based on the towed vehicle’s model year:
- 2007 or newer — $400 USD deposit
- 2001–2006 — $300 USD deposit
- 2000 or older — $200 USD deposit
Do not register your towed vehicle as a trailer. The Banjercito trailer option only records a trailer — it never captures your car’s own title and VIN, so your towed vehicle ends up with no valid permit and you can be turned back at the border. It needs its own Foreign Vehicle permit (online, file a second application; at the window, the agent bonds both).
How you tow it decides how it crosses. On a trailer or tow dolly, one driver can bring both vehicles through together. If you are flat-towing (all four wheels on the road), you must detach the towed vehicle at the border and drive it across separately under its own power — so you need a second driver, or you shuttle each vehicle across one at a time. Both must leave Mexico together and be cancelled together. See the full towing rules and fee schedule.
Boat
Whether your boat needs its own permit depends on its length:
Under 4.5 meters (14.7 ft)
No separate permit. It rides on your main vehicle’s TIP as a recreational unit — you just provide its title or registration.
4.5 meters (14.7 ft) or longer
Its own permit via the Boats/Vessels portal — $52.20 USD online (or $59.16 at the border). No deposit. Issued online for 10 years, though 5-year permits have been reported at the border since April 2026 — check the expiry on yours.
Travel Trailer, Caravan & Fifth-Wheel
A livable RV trailer — a travel trailer or caravan (ball hitch) or a fifth-wheel (kingpin coupling in the truck bed) — gets its own permit through the Banjercito Motor Home portal as a non-motorized RV: $52.20 USD online (or $59.16 at the border), no deposit, with an appliance/goods inventory step (see permit validity). It is not covered by your towing vehicle’s TIP.
Trailer or RV? A plain cargo or utility trailer rides free on your main vehicle’s TIP — just bring its title. A livable RV trailer (travel trailer, caravan, or fifth-wheel) gets its own deposit-free Motor Home permit. Both still need their own title or registration in your name.
Mexican-Registered Vehicles
If your vehicle is registered in Mexico — for example, if you own property in Mexico and keep a vehicle there — you do not need a TIP when crossing from the US into Mexico. The TIP exists to track foreign vehicles temporarily imported into Mexico; Mexican-plated vehicles are already part of the Mexican vehicle registration system.
However, Mexican-registered vehicles still require:
- Valid Mexican vehicle registration (tarjeta de circulación)
- Mexican auto insurance — a valid Mexican policy, not a US policy
- FMM tourist permit for the driver and passengers (if applicable)
Frequently Asked Questions
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