Some of the best wagons ever built were never sold in the United States — the Audi RS2 Avant, the E61 BMW M5 Touring, JDM Legacy and Stagea wagons, the fast European estates that stayed on their side of the ocean. The good news: under U.S. law, almost any of them can be legally imported once it turns 25. Here is exactly how the rule works, what you file, and the traps that catch first-time importers.

What the 25-Year Rule Actually Says

The rule comes from NHTSA, the National Highway Traffic Safety Administration. Normally a car must comply with all Federal Motor Vehicle Safety Standards (FMVSS) to be imported for use on U.S. roads. But a vehicle that is at least 25 years old is exempt from those standards entirely, regardless of whether it was ever federalized for sale here. At the border you declare the exemption on NHTSA form HS-7 by checking Box 1 — “the vehicle is 25 or more years old.” That single box is what lets a never-U.S.-market wagon come in without modification.

It Is the Manufacture Date, Not the Model Year

This trips up almost everyone. Eligibility is measured from the actual date of manufacture — the month and year stamped on the door-jamb compliance plate — not the model year on the title. A wagon built in March 2001 becomes eligible in March 2026, not on January 1. And there is no grace period: a car that is 24 years and 11 months old is not importable, full stop. Customs enforces it to the calendar month. If you are timing a purchase, work from the build plate, not the brochure year.

The EPA’s Separate 21-Year Rule

There are actually two federal agencies involved, and their clocks differ. The EPA, which handles emissions, exempts a vehicle that is at least 21 years old provided it is in original, unmodified configuration with its original-type engine — that is “Code E” on the EPA declaration form. NHTSA, which handles safety, requires 25 years. Because you must clear both, the binding number is 25. The 21-year EPA figure mainly matters if the engine has been swapped: a 21-plus-year-old car with a non-original engine loses the emissions exemption unless the replacement is an equivalent or newer EPA-certified engine.

The Three Forms You Will File

A compliant 25-year import is mostly paperwork, filed with U.S. Customs and Border Protection at entry:

• NHTSA HS-7 — the safety declaration; check Box 1 for the 25-year exemption.
• EPA 3520-1 — the emissions declaration; the older-vehicle exemption (Code E) covers original-configuration cars.
• CBP 7501 — the customs entry summary, which classifies the vehicle and sets the duty owed.

A licensed customs broker will usually prepare these for you, and most shippers fold brokerage into an import quote.

The Import Process, Step by Step

1. Confirm the exact build date from the VIN and compliance plate, and that it clears 25 years to the month.
2. Buy the car and arrange export from the origin country — deregistration, export certificate, and title.
3. Book ocean freight, usually RoRo (roll-on/roll-off) or a shared container, to a U.S. port.
4. Clear customs: your broker files HS-7, EPA 3520-1, and CBP 7501, and you pay the duty.
5. Take delivery, then title and register the car in your state — local inspection and emissions rules vary.

What Trips People Up

• Model year vs. build date. A “2001” car may have been built in late 2000 (that helps), or a January 2001 build will not qualify until January 2026.
• Duties and tariffs change. Import duty rates and any additional tariffs come from the current CBP/HTS schedules and shift over time. Confirm the rate that applies the month you import rather than a figure you read online — trade-tariff rules have moved recently, so verify current rates with CBP or your broker.
• State titling is separate from federal admission. Clearing customs does not guarantee your state will register the car; check your DMV’s rules for imported and 25-year vehicles before you buy.
• “Show or Display” is a different rule. The 25-year exemption is the clean, road-legal route for most wagons; do not confuse it with the narrow Show or Display exemption for rare cars.

See which wagons are eligible now →

Our live Wagon Import Countdown tracks every forbidden-fruit wagon and the exact date each one becomes legal to import.