Direct answer: Under NHTSA's 25-year rule, a vehicle at least 25 years old from its date of manufacture can be imported into the US without meeting federal safety standards, declared on Form HS-7 with Box 1. Under EPA rules, vehicles at least 21 years old in original, unmodified configuration are generally exempt from emissions requirements. Newer cars need another route, and state registration is a separate check.
Are JDM cars legal in the USA?
Some are, depending on age, the route used and state rules. A car is not legal simply because it is JDM. Confirm each point below for the specific model and manufacture date.
What is the 25-year rule?
NHTSA's FAQ states that "a motor vehicle that is at least 25 years old can be lawfully imported into the U.S." Such a vehicle does not need to comply with federal motor vehicle safety standards. Age runs from the date of manufacture, not the model year. The vehicle is entered under Box 1 on the HS-7 declaration at importation.
If the manufacture date is not on the original label, NHTSA's FAQ suggests documents such as a first-sale invoice or an early registration.
What is the EPA 21-year rule?
EPA Form 3520-1 provides an exemption for a vehicle at least 21 years old, measured by calendar year of manufacture subtracted from the year of importation, in original unmodified configuration. Vehicles with replacement engines are generally not eligible unless the engine and emissions equipment are equivalent or newer EPA-certified equipment.
What about newer cars?
Newer JDM cars generally need another route, such as a Registered Importer, which modifies the car to meet standards, or a narrow Show or Display exemption. These routes have their own cost, eligibility and timeline. [HELD: no fees or timings are stated until verified.]
Does state registration still apply?
Yes. Registration, emissions and inspection rules vary by state. California (CARB) is the strictest. Check your state DMV before buying.
Checklist before you buy
- Confirm the manufacture month and year from the chassis plate or export certificate.
- Confirm the route: 25-year rule, EPA 21-year rule or a Registered Importer.
- Check that the VIN and papers match.
- Check your state's registration and emissions rules in writing.
Sources
- NHTSA, Importation and Certification FAQs: https://www.nhtsa.gov/importing-vehicle/importation-and-certification-faqs (checked 2026-10-20)
- EPA Form 3520-1, Description and Declaration of Motor Vehicle or Motor Vehicle Engine: https://www.epa.gov/sites/production/files/2017-07/documents/form3520-1-2017-07-secured-enabled.pdf (2017 version, checked 2026-10-20)
FAQ
Are all JDM cars legal in the US?
No. Only cars that meet the 25-year rule, the EPA 21-year rule or another route are eligible.
Does the 25-year rule use model year?
No. It uses the date of manufacture.
Last reviewed: 2026-10-20. Author: [AUTHOR NAME AND CREDENTIAL LINE - NOT SUPPLIED].
Rules change. Confirm with your national registry or customs authority before buying.
