A vehicle at least 25 years old can enter the mainland United States without meeting the federal safety standards that block newer Japan-market imports. That is the whole rule. The age counts from the month the vehicle was built - not the model year - and the paperwork still has to be clean on both ends of the water.
Where the rule comes from
The National Highway Traffic Safety Administration (NHTSA) requires imported vehicles to meet the Federal Motor Vehicle Safety Standards (FMVSS). Japan-market vehicles were never built to those standards, which is why a five-year-old JDM truck cannot simply be registered stateside. The exemption sits in the federal import regulations (49 CFR 591.5(i)): once a vehicle is 25 years old or older, it may be imported without meeting FMVSS. On the DOT side you declare it at entry on Form HS-7, Box E.
The EPA runs its own clock
Emissions is a separate agency with a separate rule. The Environmental Protection Agency exempts vehicles 21 years old or older from federal emissions requirements, declared on EPA Form 3520-1, code E - provided the engine is still in its original, unmodified configuration. Since 25 beats 21, any vehicle that clears the NHTSA age bar clears the EPA bar too, as long as nobody swapped the engine.
How the 25 years are counted
From the month and year of manufacture, not the model year and not the first registration date. A truck built in March 2001 clears in March 2026 - not on January 1 of the year it turns 25. The build date is verified from the chassis number and the build plate, and that is the first thing we pull before anything else is planned.
Why this matters for a Guam vehicle
Guam is U.S. soil, but it sits outside the customs territory of the United States (the 50 states, D.C., and Puerto Rico). A Japan-market vehicle registered on Guam was never federalized, so moving it to the mainland is processed as an import at the port of entry: CBP entry paperwork plus the DOT and EPA declarations above, and possibly duty depending on how the vehicle is classified. Confirm duty treatment for your specific vehicle with the carrier or a customs broker before you book space - not after.
The folder that has to be complete
- Guam title and current registration
- Bill of sale
- Proof of build date - chassis number verified against the build plate
- DOT Form HS-7 with Box E checked
- EPA Form 3520-1 with code E
- Bill of lading from the carrier
- Agricultural cleanliness inspection for the outbound shipment, undercarriage included
Your destination state still gets a vote
Federal entry and state registration are two different counters. Most states register a federally exempt 25-year-old vehicle without drama. California is the hard case - its Air Resources Board has additional rules for direct-import vehicles, so read the CARB guidance before planning on a California registration. If you are PCSing, check the rules of the state you are actually heading to, not the one you came from.
Shipping it as your POV on military orders
Your PCS entitlement is set by your orders and the Joint Travel Regulations - confirm with your transportation office what is authorized before you plan around it. The age exemption is what makes a Japan-market truck from Guam eligible to enter CONUS at all; the shipment itself must still pass the agricultural cleanliness inspection before it sails. We offer flat-rate prep for exactly that inspection.
Can any 25-year-old vehicle go?
Age opens the gate; condition and paperwork get you through it. The exemption removes the FMVSS barrier - it does not make a corroded frame ship-worthy, and an engine swap can void the EPA original-configuration condition. The two things that sink these moves in practice are a swapped engine and paperwork that does not match the chassis number. Both are checkable before you commit.
What we do at the desk
Start with the chassis number. We verify the build date, flag eligible units on the lot and on the military page, and keep the documents together in one file: title, build-date proof, the auction sheet where we have it, and the signed PDI. Ask the desk which units clear the age bar today - and if you are buying here specifically to ship stateside later, say so, and we will check the math with you before you commit.