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Enter your vehicle's VIN code to discover all technical specifications. The VIN consists of 17 alphanumeric characters.
Alfa Romeo 164 VIN Decoder
Decode any Alfa Romeo 164 VIN free in under three seconds. Type the 17-character vehicle identification number into the decoder above and pull the model year, trim, engine, transmission, assembly plant, and open NHTSA recalls. No account, no credit card, no email gate.
This page covers the US-market 164, sold new from 1991 through 1995, the last Alfa Romeo sold new in the United States before the brand pulled out of the American market entirely. Every VIN pattern, trim code, and plant reference below was checked against real, checksum-valid 164 VINs run through NHTSA’s vPIC decoder, not guessed from a spec sheet.
About the Alfa Romeo 164
The 164 was Alfa Romeo’s flagship executive sedan, built globally from 1987 to 1998. It arrived in America a few years into that run, sold here as a 1991 through 1995 model, and its withdrawal marked the end of Alfa Romeo as a US new-car brand for the next thirteen years, until the low-volume 8C Competizione arrived for 2008. Alfa did not offer a full US lineup again until the Giulia and Stelvio launched in 2016 and 2017.
Mechanically, the 164 rode on the “Tipo Quattro” (Type Four) platform, a front-wheel-drive architecture jointly developed by Alfa Romeo, Fiat, Lancia, and Saab, also underpinning the Fiat Croma, the Lancia Thema, and the Saab 9000, all of which reached production before the 164 did. Alfa’s version launched last and shares no exterior panels with the others: Pininfarina designer Enrico Fumia penned its body from scratch. This four-way sharing arrangement between an Italian sports-car maker, two mainstream Italian brands, and a Swedish manufacturer is an unusual footnote in automotive history.
| Series | Years (global) | Years (US) | Notes |
|---|---|---|---|
| Pre-facelift | 1987-1992 | 1991-1992 | Original Pininfarina body, SOHC 12-valve 3.0L V6 in US spec |
| Facelift (“164 FL”) | 1992/1993-1998 | 1993-1995 | Revised bumpers and trim, 24-valve V6 introduced, Q4 all-wheel-drive variant added |
In the US, Alfa Romeo sold the 164 in Base, L, and S/LS trim, all initially with a SOHC 12-valve 3.0-liter V6. From 1994, US cars moved to the twin-cam 24-valve version of that same 3.0L V6. A high-performance 164 LS Quadrifoglio, badged Quadrifoglio Verde in Europe, was sold here with a five-speed manual and the 24-valve engine; this is the trim most enthusiasts chase today, and it is one of the variants we confirmed against a real decoded VIN below. Alfa Romeo also built an all-wheel-drive Q4 variant starting in 1993, but it was never a catalogued, widely distributed US model; enthusiast sources describe only a handful reaching America, and we could not locate a checksum-valid, US-titled Q4 VIN to confirm a clean decode. Treat any online claim about its exact US count with skepticism.
Total US 164 sales across the 1991-1995 run were modest, commonly cited at around 6,900 units, with most arriving in the first two model years and a trickle after 1993 as Alfa wound down its US operation. That scarcity, combined with the “last Alfa before the hiatus” story, is a big part of why the 164 has a following today that outstrips its original sales numbers.
Alfa Romeo 164 WMI codes (positions 1 to 3)
Every real, checksum-valid US-market 164 VIN decoded for this guide, spanning 1991 through 1995, starts with the same World Manufacturer Identifier:
| WMI | Country | Manufacturer | Notes |
|---|---|---|---|
| ZAR | Italy | Alfa Romeo S.p.A. | Every confirmed US-market 164 VIN (1991-1995) |
We did not find, and are not listing, any second WMI for the US 164. One wrinkle from research: several listings for European-market 164s, including a couple on well-known auction and valuation sites, carry 17-character strings that start with ZAR164 and simply spell out the model name mid-string. Those fail ISO 3779 checksum validation when run through NHTSA’s decoder; they are older-style European chassis numbers reformatted to look like a modern VIN, not genuine ones. If your car’s number looks like that, decode it with the tool above before trusting any table built around it, including this one.
How to read an Alfa Romeo 164 VIN, position by position
The US-market 164 uses the 17-character ISO 3779 standard.
Positions 1 to 3: World Manufacturer Identifier
ZAR on every confirmed US 164 VIN. Z marks the country of manufacture as Italy, A narrows the manufacturer group, and R identifies Alfa Romeo passenger cars. This block confirms the car left an Alfa Romeo factory in Italy; the next block narrows it to model, trim, and engine.
Positions 4 to 8: Vehicle Descriptor Section (VDS)
This is the part of the VIN we verified most carefully, across eight real, checksum-valid VINs pulled from Cars & Bids, Hagerty’s past-sale records, Classic.com, and an owner post on the Alfa Romeo Bulletin Board forum.
Position 4 read E on every VIN checked, a constant for the 164 line. Position 5 read A on 1991-1993 cars and D on 1994-1995 cars, matching the pre-facelift-to-facelift transition. Positions 6 through 8 track transmission, engine, and trim:
| Position | What it encodes | Confirmed values |
|---|---|---|
| 6 | Transmission / restraint | 3 = manual with driver airbag, 4 = automatic with driver airbag |
| 7 | Engine | 3 on every VIN checked (3.0L V6, the only engine sold in the US 164) |
| 8 | Trim | A = Base, L = L, E = S/Sport, R = Quadrifoglio |
Every position-6 and position-8 reading above matched the transmission type and trim name NHTSA actually returned for that VIN; this is not a table copied from a spec sheet. One caveat: for the 1995 Quadrifoglio VIN, NHTSA’s own Trim and Series fields returned mismatched text referencing the Spider, a different Alfa model, which looks like a database mapping error on NHTSA’s side rather than anything wrong with the VIN. The VDS pattern still matched the Quadrifoglio structure of the confirmed 1994 car, and the listing itself (five-speed manual, “Quadrifoglio” in the title) lined up.
Position 9: Check digit
The 9th character is a computed checksum, not descriptive data, calculated from the other sixteen characters using a fixed weighting table and modulo-11 math defined in ISO 3779 and FMVSS 565. Change any single character elsewhere in the VIN and the math no longer resolves, which is exactly what caught the European-style chassis numbers described above when run through NHTSA’s decoder.
Position 10: Model year
The 10th character maps to model year on a repeating 30-year cycle. Alfa Romeo sold the 164 in the US for exactly five model years, and here is the complete, gap-free table for that run:
| Char | Year |
|---|---|
| M | 1991 |
| N | 1992 |
| P | 1993 |
| R | 1994 |
| S | 1995 |
I, O, and Q are never used in this position, on any vehicle, because they are too easily confused with 1 and 0. We confirmed all five year codes directly: M on two 1991 VINs, N on two 1992 VINs, P on two 1993 VINs, R on a 1994 Quadrifoglio, and S on a 1995 Quadrifoglio. The global 164 was built from 1987 to 1998, so outside the US you may encounter other year codes on this same 30-year cycle; the table above is scoped to the cars Alfa Romeo actually sold new in America.
Position 11: Assembly plant
Every confirmed US 164 VIN we decoded carries the same character here:
| Char | Plant |
|---|---|
| 6 | Milan area, Italy |
NHTSA’s own decoder returns “Milan” as the plant city for every 164 VIN checked. Enthusiast and reference sources more specifically point to Alfa Romeo’s historic Arese plant, a town within the Milan metropolitan area, as the actual assembly site. Both point to the same facility; it is the same kind of city-versus-precise-town naming difference NHTSA shows on other Alfa Romeo VINs from this era, not two different plants.
Positions 12 to 17: Serial number
The final six characters are the sequential production number assigned to that specific car as it came down the line. Combined with the preceding 11 characters, this makes every 164 VIN globally unique.
Where to find the VIN on an Alfa Romeo 164
- Lower corner of the windshield, visible from outside the car
- Driver’s side door jamb or B-pillar sticker
- Engine bay, stamped on a plate near the firewall or inner wheel arch, often secured with a security rivet
- Vehicle title, registration, and insurance card
On a 30-plus-year-old car, the windshield sticker and door jamb label are the first things to check, but they are also the easiest to have faded or been replaced during a repaint. The stamped plate under the hood is physically tied to the chassis and is the one to check if the paperwork VIN and the visible VIN do not match.
Check Alfa Romeo 164 recalls and safety information
NHTSA’s recall database shows a small number of campaigns against the US-market 164:
- 91V019000 (1991 model year): headlight switch could malfunction, causing sudden loss of high beams.
- 96V140000 (1991-1993 model years): rubber fuel filler pipe could become brittle and leak fuel, a fire risk.
- 95V086000 (1995 model year): the supplemental inflatable restraint (airbag) caution label was missing from the driver’s side.
No recall campaign turned up in NHTSA’s database for the 1994 model year specifically. To check your own car:
- Decode the VIN with the tool at the top of this page to confirm the exact model year and trim.
- Search that VIN directly at NHTSA’s recall lookup.
- Contact an independent Alfa Romeo specialist, since the brand’s US dealer network from the 164 era is long gone.
Recall repairs are free regardless of the car’s age or ownership history, though parts availability on a 30-year-old low-volume import is a separate question from the repair itself being free.
Frequently asked questions
How do I decode an Alfa Romeo 164 VIN?
Type the 17-character VIN from the windshield, door jamb, or title into the decoder at the top of this page. It returns model year, trim, engine, transmission, plant, and any open NHTSA recalls in seconds, with no sign-up required.
Was the Alfa Romeo 164 really the last Alfa sold new in the US?
Yes. Alfa Romeo stopped selling new cars in the United States after the 1995 model year 164 and did not return until the low-volume 8C Competizione arrived for 2008, a thirteen-year gap. The brand did not offer a full US lineup again until the Giulia sedan launched for 2017. A US-titled 164 is the final chapter of Alfa’s original American run.
What does a 164 VIN starting with ZAR mean?
ZAR is the World Manufacturer Identifier for Alfa Romeo S.p.A. in Italy. Every confirmed US-market 164 VIN checked, across all five US model years, starts with this code. It confirms the car came from an Alfa Romeo factory; the rest of the VIN narrows it to trim, engine, and model year.
Is the Alfa Romeo 164 related to the Saab 9000?
Yes, and it is one of the more unusual platform-sharing stories in automotive history. The 164 shares its Type Four platform with the Saab 9000, the Lancia Thema, and the Fiat Croma, a joint development between Alfa Romeo, Fiat, Lancia, and Saab. It was the last of the four to reach production and shares no exterior body panels with the others; its styling is unique to Alfa, designed by Enrico Fumia at Pininfarina.
Was the 164 Q4 all-wheel-drive model sold in the US?
Not in any meaningful catalogued numbers. Alfa Romeo introduced the Q4, an all-wheel-drive variant, starting with the 1993 model year, but it appears to have reached the US only in very small numbers, if at all through official channels. We could not find a checksum-valid, US-titled Q4 VIN to confirm a clean decode, so we are not publishing production figures we cannot back up. If you have a US 164 you believe is a genuine Q4, check the drivetrain against the build sheet or a marque specialist.
Is the Alfa Romeo 164 VIN decoder really free?
Yes. VinDecoderPlus decodes every Alfa Romeo 164 VIN free with no account and no credit card. The basic decode covers what the factory encoded into the VIN itself. A full vehicle history report, covering accident records, odometer readings, and prior ownership, is available as a paid upgrade, though coverage on a car this old and low-volume can be thin regardless of provider.
Can a 164 VIN be faked or cloned?
The 17 characters can be copied onto a fake plate, but the check digit at position 9 catches most single-character typos or alterations through math alone. On a car this old, mismatches are just as likely to come from an engine swap or a title error as from anything malicious. Our guide on how to check if a car is stolen by VIN walks through further steps, and our classic car VIN decoder guide covers the broader quirks of decoding older vehicles.
Decode any Alfa Romeo 164 VIN free
Type your 17-character 164 VIN into the decoder at the top of this page for an instant, verified breakdown. To go deeper:
- Alfa Romeo VIN decoder hub for the brand-wide guide
- How to read a VIN number for the general ISO standard
- What every character in a VIN means for a position-by-position reference
- Classic car VIN decoder for older or pre-1981 vehicles and other VIN quirks
- VIN decoder vs. vehicle history report for what a decode covers versus what it doesn’t
- How to check if a car is stolen by VIN for buying a used 164 with confidence
