Federal import law & state kei truck guides
25-year rule · tariffs · state registration
Importing a Japanese vehicle starts with federal customs and safety rules. Once cleared at the port, state DMV law determines whether you can title and drive a kei truck on public roads. This hub links to the statutes and agency guidance that define both layers — reworded for clarity, not legal advice.
Federal law
The 25-year import exemption
U.S. law treats most imported vehicles as non-conforming unless they meet Federal Motor Vehicle Safety Standards (FMVSS) or qualify for an exemption. The pathway most JDM enthusiasts use is the 25-year rule: a vehicle manufactured at least 25 years before the date of import is exempt from FMVSS compliance and may be imported without a Registered Importer (RI).
- NHTSA: declare HS-7 Box 1 on Form HS-7 — vehicle at least 25 years old and not required to comply with FMVSS.
- EPA: vehicles 21+ years old in original configuration may use Form 3520-1 declaration code E (engine and emissions).
- CBP: file entry (Form 7501) at the port with title, bill of lading, and both NHTSA/EPA declarations.
- State DMV: federal clearance does not guarantee state registration — each state sets its own rules for kei-class vehicles.
Official sources
- Imported Vehicle Safety Compliance Act (1988)
Federal framework that created the 25-year safety exemption pathway for non-conforming imports.
- NHTSA — Importation & Certification FAQs
Official guidance on HS-7 Box 1 for vehicles at least 25 years old from manufacture.
- 49 CFR §591.5 — Import declarations (NHTSA)
Code of Federal Regulations governing DOT import declarations, including the age exemption.
- EPA Form 3520-1 & import requirements
EPA entry requirements; vehicles 21+ years old in original configuration may use declaration code E.
- AAMVA — Imported Vehicles Guidance
Reference guide used by state DMVs on federal import age rules and documentation.
- CBP — Importing a motor vehicle
Customs entry process, including CBP Form 7501 and required import documents at the port.
Tariffs
Current duties on imported vehicles
Duty owed at U.S. customs depends on your vehicle's Harmonized Tariff Schedule (HTS) classification, country of origin, and any active trade programs. Rates change with executive orders and trade agreements — verify with CBP and your customs broker before shipping.
- Most passenger vehicles and light trucks from Japan are subject to a combined duty framework that often totals around 15% ad valorem under current U.S.–Japan trade arrangements, depending on the vehicle's HTS classification and Column 1 rate.
- Section 232 automobile tariffs and reciprocal tariff programs may apply to newer imports; classifications use HTS headings such as 9903.94.40–9903.94.43 for Japanese automobiles and parts.
- Vehicles at least 25 years old may qualify for exemptions from certain Section 232 passenger-vehicle duties when properly declared — confirm the current HTS subheading with your customs broker at entry.
- You will also pay standard harbor maintenance, merchandise processing, and brokerage fees at import in addition to any applicable ad valorem duty.
- Tariff policy changes frequently. Always verify the current rate with CBP and your broker before your vehicle ships — this summary is informational, not customs advice.
Tariff & customs resources
- CBP — U.S. Tariff Overview (Feb 2026)
Summary of active duty programs including autos, Section 232, reciprocal rates, and exemptions.
- CSMS #66242844 — U.S.–Japan tariff implementation
CBP guidance on the U.S.–Japan agreement, including automobile HTS headings 9903.94.40–.43.
- Executive Order 14345 — U.S.–Japan Agreement
Federal Register notice establishing baseline tariff treatment for Japanese imports.
- HTSUS — Harmonized Tariff Schedule (USITC)
Look up Column 1 duty rates and special program headings for your vehicle classification.
State guides
Kei truck legality by state
Federal import clearance is only half the story. Each state decides whether a kei truck can be titled, plated, and driven on public roads. Select a state below for registration requirements, relevant statutes, and links to official DMV or DOT guidance.
Arizona
Street use permittedOHV/on-road registration path with Primary On-Road Use — one of the most kei-friendly states.
Read guideTexas
Street use permittedSB 1816 classifies 25+ year miniature vehicles as motor vehicles for title and highway use.
Read guideUtah
Conditional / restrictedGenerally permitted with 50 mph road limits; stricter emissions in Wasatch Front counties.
Read guideIdaho
Conditional / restrictedNo statewide ban; county-level registration with VIN inspection — confirm local road rules.
Read guideCalifornia
On-road use prohibitedOn-road registration effectively blocked by CARB emissions and FMVSS requirements.
Read guideLaws and agency interpretations change. Confirm current requirements with your state DMV before purchasing. These guides are informational only and not legal advice.
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