Alfa Romeo ARNA VIN Decoder

Decode an Alfa Romeo ARNA VIN using the tool at the top of this page. The ARNA was never sold new in the United States, so this page works as a European-market reference: the strange industrial story behind the car, how its 17-character VIN is theoretically built under ISO 3779, and an honest account of what we could and could not verify against a real chassis number.

Start with the name, because it is the most important fact about this car. ARNA stands for Alfa Romeo Nissan Autoveicoli, and it was not a marketing badge exercise. It was a real, jointly-owned Italian-Japanese company, formed to build a car that combined a Nissan-designed body with Alfa Romeo’s own Alfasud-derived mechanicals. The result is one of the strangest and, by most enthusiast and press accounts, most poorly received cars Alfa Romeo ever put its badge on. If you are researching an ARNA today, you are almost certainly dealing with a rare survivor: only 53,047 were built across the entire 1983-1987 run, and none were ever federalized for the US market.

About the Alfa Romeo ARNA

The ARNA launched at the September 1983 Frankfurt Motor Show as a three-door “L” and five-door “SL” hatchback, powered by the 1.2-liter version of Alfa Romeo’s flat-four, water-cooled “boxer” engine, the same family that powered the Alfasud and later the Alfa Romeo 33. A 1.3-liter TI arrived in 1984 with a noticeably sportier tune, and later cars offered a 1.5-liter engine, the same unit used in a Nissan-badged sibling sold in the UK and Spain as the Cherry Europe GTI. Internally, Alfa Romeo catalogued the car as Type 920.

Trim	Engine	Displacement	Power	Years offered
L (3-door)	Flat-4 boxer	1,186 cc	63 PS (46 kW)	1983-1987
SL (5-door)	Flat-4 boxer	1,186 cc	63-68 PS (46-50 kW)	1983-1987
TI (3-door)	Flat-4 boxer	1,351 cc	86 PS (63 kW)	1984-1986
TI (later, 1.5)	Flat-4 boxer	1,490 cc	95 PS (70 kW)	mid-1980s-1987

All versions used a five-speed manual transaxle, and the front suspension, steering, and front brakes were Alfasud-derived, mounted in a body that was not.

The joint venture, precisely

On 9 October 1980, in Tokyo, Alfa Romeo president Ettore Massacesi and Nissan chairman Takashi Ishihara signed the memorandum that created Alfa Romeo Nissan Autoveicoli S.p.A., a 50:50 joint company between Alfa Romeo and Nissan Motor Co. Alfa needed a partner to fund and fill capacity at its southern Italian manufacturing base rather than develop an all-new entry-level model alone; Nissan gained a European-assembled car that sidestepped the import quotas several countries imposed on Japanese-built vehicles at the time.

The joint venture built a dedicated new plant at Pratola Serra, in Irpinia near Naples, close to Alfa Romeo’s existing Pomigliano d’Arco factory (the same complex that built the Alfasud and later the Alfa Romeo 33). Nissan shipped Pulsar/Cherry body panels from Japan to Pratola Serra, where they had to be reworked to accept Alfa’s boxer engine and mechanicals, a mismatch that reportedly caused production delays and cost overruns before the car reached showrooms. Sources differ on whether final assembly happened entirely at Pratola Serra or was completed at the neighboring Pomigliano d’Arco line; we have not found an authoritative account that resolves the split cleanly, so we report the ambiguity rather than guess.

Mechanically, the car was essentially a Nissan Pulsar/Cherry (N12 generation) body wearing an Alfasud drivetrain, and reception was rough from the start: styling that read as neither properly Italian nor properly Japanese, extra weight up front from the boxer engine, and build-quality criticism on both the Alfa-badged and the reciprocal Nissan-badged Cherry Europe cars. When Fiat took control of Alfa Romeo in November 1986, the new ownership wound the joint venture down quickly, ending ARNA production in 1987 and redirecting investment toward the conventional Alfa Romeo 33 as the brand’s entry-level model instead. Nissan continued building the related Cherry Europe on its own for a short time afterward, without the Alfa engine. Pratola Serra itself outlived the ARNA, later becoming an Alfa Romeo engine plant.

The ARNA was never federalized or sold new in the United States. Alfa Romeo’s American dealer network in the 1980s carried the Spider and the GTV6, not the entry-level European hatchback range, and the ARNA’s troubled reputation in Europe gave nobody a reason to push for US certification. Any ARNA in the US today would have arrived as a private, non-federalized import.

Alfa Romeo ARNA WMI codes (positions 1 to 3)

We looked for a real ARNA VIN across European dealer listings (Classic Trader, Car and Classic, Classic.com), auction houses (Bonhams, RM Sotheby’s), Italian classifieds, and enthusiast forums and registers (AlfaBB, Alfisti.net, the Alfa Romeo Owners Club UK’s ARNA Register). We found several ARNA listings by trim, year, and mileage, but none that published the full 17-character VIN; sellers in this niche quote registration date and mileage rather than the stamped chassis number, and the car is rare enough that no major auction archive shows a completed ARNA sale with a documented VIN either.

So we are not publishing a WMI table for the ARNA. Modern Alfa Romeo passenger cars built by Alfa Romeo S.p.A. generally carry the WMI ZAR, confirmed on real VINs from related, better-documented models like the Alfa Romeo 33. But the ARNA was not built by Alfa Romeo S.p.A. in the ordinary sense; it was built by Alfa Romeo Nissan Autoveicoli S.p.A., a separate joint-venture company. Whether that distinct legal entity used the standard ZAR prefix, a Nissan-linked prefix, or something else is a genuinely open question we could not answer without a real sample, and printing ZAR here would be a guess dressed up as fact. If you have a real ARNA VIN in hand, decoding it above will show whether NHTSA’s vPIC database recognizes its WMI at all.

How to read a VIN: position by position

The ARNA’s chassis number nominally follows the international ISO 3779 standard used across the industry, and this section lays out that standard structure. Read it as the general framework, not as a confirmed, ARNA-verified table, since we do not have a real ARNA VIN to check it against. On closely related, better-documented Alfa Romeo models from the same years, several of these positions do not follow the North American convention at all, and there is no reason to assume the ARNA is different.

Positions 1-3: WMI

The World Manufacturer Identifier, discussed above. We are not naming one specifically for the ARNA.

Positions 4-8: Vehicle Descriptor Section (VDS)

On a standard ISO 3779 VIN, these five characters encode body style, engine, and model series. On related Alfa Romeo models of the era, the internal type code often shows up here; the ARNA’s own type code is 920, and it would not be surprising to see it, or a variant of it, in this block on a real chassis number, but without a verified example we cannot confirm the exact layout.

Position 9: Check digit

Under 49 CFR 565, US-market VINs carry a mathematically calculated check digit at position 9 to catch transcription errors. A European-market car built for the Italian and wider European market in the 1980s was not built to that US federal regulation, so do not expect this position to validate against the standard check-digit formula.

Position 10: Model year

The SAE/ISO 30-year cyclic scheme maps a single letter or digit to model year. Scoped to the ARNA’s production run:

Code	Model year
D	1983
E	1984
F	1985
G	1986
H	1987

(I, O, and Q are never used in this position anywhere in the standard, because they can be misread as 1 and 0.)

This is the standard, gap-free table for those five years, worth including for reference. But treat it with caution: on other 1980s European-market Alfa Romeos we have checked against real VINs, position 10 reads a plain 0, not a letter, because the US model-year-letter convention was a US federal requirement, not a mandatory part of ISO 3779 itself, and European manufacturers of this period frequently skipped it. Confirm the model year from the registration document or a marque specialist rather than trusting position 10 alone.

Position 11: Assembly plant

A single character identifying the factory. Alfa Romeo has never published a public plant-code table for this era, and we have no real ARNA VIN to read a plant code from. Given the joint-venture footprint, an authentic code here would point to Pratola Serra, Pomigliano d’Arco, or a code shared between the two closely linked sites, but we cannot confirm which without a real sample.

Positions 12-17: Serial number

The final six characters are the sequential production number, unique to each individual car. Combined with the earlier positions, this is what makes a specific ARNA’s VIN unique among the roughly 53,000 built.

Where to find the VIN

Expect the chassis number stamped into metal rather than only printed on a sticker, consistent with other Italian-built cars of the period:

• Stamped into the bulkhead or on a plate under the hood, typically near a front suspension mounting point
• Etched into a lower corner of the windscreen on many examples, though this was not universal
• Printed on the libretto (Italian registration document) or, for a UK-registered car, the V5C logbook
• Repeated on a data/build plate in the engine bay alongside paint and equipment codes

Because the ARNA was never sold new in the US, there is no federally mandated dashboard VIN plate visible through the windshield. On a US-based example, treat the strut-area and firewall stamps, checked against the import paperwork, as the authoritative source.

Recalls and safety information

The ARNA predates NHTSA’s involvement entirely, since it was never sold new in the US. For a European-market car, the relevant authority at the time was Italy’s Ministero dei Trasporti (transport ministry), or the equivalent body in whichever country the car was originally registered. There is no free, VIN-searchable public recall database for a 1980s Italian-market vehicle built by a joint venture that no longer exists in its original form.

If you own or are considering buying one:

1. Decode the VIN with the tool above to see what, if anything, NHTSA’s vPIC database has on file for the WMI
2. Contact Stellantis’ historical archive services for Alfa Romeo, since some pre-Fiat-era production records survive, using the chassis number stamped under the hood
3. Consult the Alfa Romeo Owners Club UK’s ARNA Register or the Registro Alfa Romeo in Italy, both of which track surviving cars
4. Treat any privately imported US example as outside current NHTSA recall tracking, given its age and non-federalized status

A pre-purchase inspection by a specialist familiar with the Alfasud boxer engine and Nissan N12-era body construction matters more than any recall lookup on a car this rare and old. Given the joint venture’s own quality reputation, budget for a thorough check of rust, cambelt history, and the fit between the Japanese body and Italian mechanicals.

Frequently asked questions

Was the Alfa Romeo ARNA sold in the United States?

No. The ARNA was never federalized or sold new through Alfa Romeo dealers in the US. Alfa’s US lineup in the 1980s was built around the Spider and GTV6, not the entry-level European hatchback range. Any ARNA in the US today arrived as a private, non-federalized import.

What does ARNA actually stand for, and was it a real joint venture?

ARNA stands for Alfa Romeo Nissan Autoveicoli. It was a genuine 50:50 joint-venture company, Alfa Romeo Nissan Autoveicoli S.p.A., formed on 9 October 1980 by agreement between Alfa Romeo and Nissan Motor Co., not just a badge-engineering arrangement. The joint venture built a dedicated plant at Pratola Serra near Naples, where Nissan Pulsar/Cherry body panels shipped from Japan were mated to Alfasud-derived Alfa Romeo engines and mechanicals.

Why did Alfa Romeo stop building the ARNA so quickly?

Production ran only from 1983 to 1987, ending not long after Fiat acquired Alfa Romeo in November 1986. Fiat’s new management wound the joint venture down and shifted investment toward the conventional Alfa Romeo 33 as the brand’s entry-level model. The ARNA had also struggled commercially and critically almost from launch, hurt by a body-and-drivetrain mismatch that caused early production delays and by build-quality criticism on both the Alfa-badged and Nissan-badged (Cherry Europe) versions.

Can I get a vehicle history report for an Alfa Romeo ARNA?

Not in the way you can for a US-market car. Services like Carfax rely on data collected inside the US and Canada: accident records, title records, insurance claims, odometer readings. An ARNA that spent its life in Europe will not have that trail. Our guide on the difference between a VIN decoder and a vehicle history report explains what a decode can and cannot tell you.

How do I know if a used Alfa Romeo ARNA has been stolen?

Stolen-vehicle databases for rare 1980s European imports are limited and vary by country. Start with our guide on how to check if a car is stolen by VIN, but expect cross-border checks for a car this old and this rare to be far less complete than for a recent US-market vehicle. Matching the under-hood stamp to the paperwork, and having a specialist inspect the car in person, is your best practical safeguard.

Decode any Alfa Romeo ARNA VIN

Type the VIN from the strut area, windscreen etching, or registration document into the decoder at the top of this page. Given the car’s history, expect NHTSA’s database to return little to nothing specific to the ARNA. To go further:

• Alfa Romeo VIN decoder hub for the brand-wide guide across all Alfa Romeo models
• How to read a VIN number for the general ISO 3779 standard
• What every character in a VIN means for a position-by-position reference
• Classic car VIN decoder guide for more on decoding pre-2000s and non-US vehicles like the ARNA
• VIN decoder vs. vehicle history report for what a decode covers and what it doesn’t
• How to check if a car is stolen by VIN for verification steps before buying a used import
• How the VIN check digit works for verifying a VIN was not mistyped or altered
• VIN formats by country and manufacturer for what the first three characters tell you