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CODE 23Chassis register 車台番号Honda · NSX

NA1: Honda NSX

1st generation. 3.0 C30A (manual to Jan 1997; automatic to 2005).

The code 型式
Code
NA1
Make
Honda
Model
NSX
Generation
1st generation
Variant
3.0 C30A (manual to Jan 1997; automatic to 2005)
Prefixed forms 排出ガス規制識別記号
E-NA1, ABA-NA1
01

Production in Japan

The first and last production dates recorded for NA1 in Japan, with the source for each date and how far the dates can be trusted.

NA1 production dates, confidence and sources
WhatDateSource
Start (Japan)Sep 1990Honda press release, 13 September 1990: NSX launch (Japanese)
manufacturer
End (Japan)Dec 2005Honda press release, 12 July 2005: NSX production ends end of December 2005 (Japanese)
manufacturer
ConfidenceHighBoth dates come from a manufacturer source, and no source disputes them.

Notes as recorded

On sale September 1990 (Honda archive 1990.09). From February 1997 the manual became the 3.2 NA2; the 3.0 automatic stayed NA1. Production ended end of December 2005. Start is a sale date; production date not published.

02

US import eligibility

Worked out from the dates above, as of November 13, 2026 (PT). Eligibility is decided by the specific car’s build date on its plate.

The two age lines 年式
First builds turn 25 NHTSA, 49 CFR 591.5(i)
Sep 2015
Last builds turn 25 NHTSA, 49 CFR 591.5(i)
Dec 2030
First builds clear 21 years EPA Form 3520-1, code E
2011
Last builds clear 21 years EPA Form 3520-1, code E
2026
Status today 2026-11-13
Builds up to Oct 2001 are past 25 years; Nov 2001 builds turn 25 during this month

The 25-year line is the NHTSA age exemption for a vehicle not built to the Federal Motor Vehicle Safety Standards (49 CFR 591.5(i)), counted from the date of manufacture. The 21-year line is the EPA exemption on Form 3520-1, counted by calendar year and limited to a car in its original configuration.

Eligibility is decided by the specific car’s build date on its plate, not by the chassis code and not by the model year. Two cars of the same code can sit on different sides of the line.

The form opens the eligibility check with this code filled in. General information, not legal advice.

03

Prefixed forms of this code, other codes of the same generation, and the other NSX rows in the register.

Codes related to NA1
CodeWhat it isWhere it goes
E-NA1Prefixed form of this code: same car, checked with the prefix as stampedCheck this prefixed form →
ABA-NA1Prefixed form of this code: same car, checked with the prefix as stampedCheck this prefixed form →
NA21st generation (3.2): Feb 1997 to Dec 2005See it on the Honda page →

Every row in the register carries its dates and a source: all Honda chassis codes or the full list by make.

04

Where next

The pages that finish the job for this code.

General information only, not legal, customs or tax advice. Dates are researcher readings of the cited sources and can be wrong; eligibility is decided by the build date of the specific car. Confirm current requirements with CBP, NHTSA, the EPA and your state motor vehicle agency before importing.