Audi 50 VIN Decoder

Decode an Audi 50 VIN or chassis number using the tool at the top of this page. The Audi 50 was never sold new in the United States, so this page works as a European-market reference: how Audi actually numbered these cars during a run that ended a full year before the industry settled on the modern 17-character VIN, and the one fact that makes this obscure little hatchback worth knowing about in the first place.

The Audi 50 is the car that became the Volkswagen Polo. Not “inspired by,” not “closely related to.” Volkswagen took the Audi 50, changed the badges and trim, and put it on sale as the Polo about six weeks after the Audi version reached dealers. It is one of the rare cases in automotive history where a Volkswagen was derived from an Audi rather than the usual reverse, and it happened at a moment when Audi, not VW, was doing the more advanced small-car engineering inside the group. The cheaper Polo went on to outsell its Audi sibling almost immediately, and within four years Audi pulled the plug on its own car while the Polo kept going, through generation after generation, and remains in production today.

About the Audi 50

Audi began sketching a compact, front-wheel-drive hatchback in 1968, before the format had really proven itself in Europe. The project got serious once NSU Motorenwerke was folded into what briefly became “Audi NSU Auto Union AG,” giving Audi a design center at Ingolstadt and a spare factory at Neckarsulm to build the thing. Internally the car was project K50 (Kolben 50, “piston 50,” a pointed contrast with NSU’s rotary-engined Ro80), developed under Audi chief engineer Ludwig Kraus in about 21 months. Bertone’s Marcello Gandini is publicly credited with the styling, but Wikipedia’s account, sourced to a 1977 Motor magazine item, notes the studio’s actual contribution was limited to two details, the circular vent cover at the base of the C-pillar and the small flick-up at the rear of the waistline. The car itself was essentially an in-house Audi design, finalized by Audi’s own Claus Luthe.

Audi 50 dealer sales began in autumn 1974. The car came only as a 3-door hatchback, on the new VW Group A01 platform, with front-wheel drive, MacPherson strut front suspension, and a semi-independent twist-beam rear axle, unusually sophisticated underpinnings for the class at the time. It was built at two plants at once: Audi NSU Auto Union’s own Neckarsulm factory (the former NSU works) and Volkswagen’s much larger Wolfsburg plant. The Polo, once it arrived, was built exclusively at Wolfsburg, part of why VW had the volume advantage almost from the start.

Trim	Years offered	Engine	Output	Notes
L / LS	1974-1978	1.1L (1,093cc) OHC I4	50 PS (37 kW)	Base and mid trim, runs on regular petrol
GL	1974-1976	1.1L (1,093cc) OHC I4	60 PS (44 kW)	Higher-compression tune needing premium fuel; extra chrome and a plusher interior
GLS	1976-1978	1.1L (1,093cc) OHC I4	50-60 PS	Replaced the GL with more standard equipment, including adjustable headrests
GLS 1.3	1977-1978	1.3L (1,272cc) OHC I4	60 PS (44 kW)	Bigger engine added as a GLS option; otherwise this displacement was reserved for the Polo GT and the Derby notchback

Every Audi 50 used a 4-speed manual gearbox; no automatic was ever offered. The 1.1L engine carries the factory codes HB and HC, the 1.3L carries HJ and HH, per Volkswagen’s own engine-code documentation, the same codes that show up on the mechanically identical VW Polo Mk1.

Audi and VW sold the two cars side by side for about three years. The Polo undercut the Audi 50 on price and was marketed more plainly as an economy car, and it outsold the Audi 50 almost immediately. By 1978, after less than four years on sale, Audi discontinued the 50 after 180,812 had been built. A facelift was actually designed, styled closer to the Audi 100 and Audi 80 of the period, but a holding-company board decision to have the Audi brand concentrate on larger, pricier cars killed it before it reached production. The Volkswagen side of the family kept growing instead: the Polo got its own facelift in 1979, a notchback Derby sibling arrived in 1977 (developed by Audi at Ingolstadt but sold only as a VW), and the Polo nameplate has run continuously ever since, now in its sixth generation. Audi had no direct successor in the supermini class until the Audi A2 in 1999, and no proper spiritual successor until the Audi A1 arrived in 2010, 32 years after the 50 went out of production.

How Audi 50 chassis numbers worked

Unlike most cars decoded on this site, no genuine Audi 50 chassis number is a 17-character VIN. Volkswagen Group, Audi included, only adopted the ISO 3779 17-character format on 1 August 1979, at the start of the 1980 model year. Audi 50 production had already ended in the summer of 1978, a full year before that changeover, so every Audi 50 chassis number without exception uses the older, pre-standard scheme.

Before 1980, VW Group ran a nine-to-eleven digit numbering system specific to each model line, with no cross-manufacturer standardization. For the Typ 86 family, covering the Audi 50, VW Polo, and later Derby notchback, owners on the UK Polo forum uk-polos.net have worked out how the pre-1980 numbers break down, matched against known production dates:

Segment	Meaning	Example
First 2 digits	Type designation, always 86 across the Audi 50 / Polo / Derby family	86
3rd digit	Model year, on a German August-to-July model year calendar	5 = MY1975 (Aug 1974-Jul 1975), 6 = MY1976, 7 = MY1977, 8 = MY1978
Next 2 digits	Variant code	15 = Audi 50 (through mid-1976); 23 = VW Polo
Remaining digits	Sequential running number within that model year	001813

Put together, a number reading 86515001813 decodes as Typ 86, model year 1975, Audi 50 variant, the 1,813th car built that year. Through mid-1976 you can tell an early Audi 50 apart from a Polo of the same period purely from the variant code, 15 against 23. That stops working from July 1976, the start of model year 1977: Audi 50 and Polo production were folded into one shared range starting at 8672300001, so a number from that point on no longer identifies the badge alone. Cars from the final model year, 1978, carry numbers starting with 868.

Two honest gaps worth stating plainly. First, there is no WMI to check the way there is on a post-1981 car, since the concept did not apply to this numbering scheme; a genuine Audi 50 chassis number returns nothing through NHTSA’s vPIC decoder. We checked directly: vPIC does recognize WAU, the prefix used on modern Audi VINs, but its own record shows that WMI went into public use only in the 2010s, decades after the Audi 50 stopped production, with no connection to this car’s chassis numbers. Second, no published source ties specific eleven-digit ranges to a specific trim (L versus LS versus GL/GLS) the way the variant code separates Audi from VW. Pinning a trim on an early car means matching the running number against dated production or import records, not reading it off the string.

Where to find the chassis number

• Stamped into the front body panel or bulkhead in the engine bay, typically near the radiator support or spare-wheel well
• Repeated on a small metal data plate riveted in the engine bay, which also lists engine and paint codes
• Recorded on the German Fahrzeugbrief or Fahrzeugschein (the original registration documents), or on a UK-imported car’s V5C logbook
• Not on the windshield, and not on a door-jamb sticker of the kind fitted to modern cars; those federal placement rules never applied to a car sold only in Europe

Recalls and safety information

The Audi 50 predates NHTSA’s involvement entirely, since it was never sold new in the US. For a car sold in West Germany, the closest equivalent authority today is the Kraftfahrt-Bundesamt (KBA), Germany’s federal motor vehicle authority, though its modern role in coordinating and publishing recalls largely postdates this car. At the time, a service campaign would typically have gone through Audi and Volkswagen dealer networks directly rather than any public, searchable database.

There is no free, VIN-searchable recall lookup for a car this old, from NHTSA or from the KBA. If you are buying or already own one:

1. Decode the chassis number above to confirm the type designation, model year, and, for a pre-mid-1976 car, whether it was originally assigned to an Audi 50 or a Polo
2. Check with Volkswagen Group’s historical archive, since some records tied to Typ 86 production have survived
3. Consult an owners’ club, such as the UK’s Type 86 Register covering the Mk1 Polo, Derby, and Audi 50, which holds far more chassis-number data than any factory source ever published
4. Treat a pre-purchase inspection as more important than any recall check; rust in the sills, floor pans, and rear wheel arches is the real risk on a small European car nearing its 50th birthday

Frequently asked questions

Was the Audi 50 sold in the United States?

No. The Audi 50 was a Europe-only model, sold from 1974 to 1978 and never federalized for the US market. Any Audi 50 in the US today arrived as a private import.

What is the Audi 50’s relationship to the Volkswagen Polo?

The Polo is a rebadged, mildly restyled Audi 50, put on sale by Volkswagen roughly six weeks after the Audi 50 itself reached dealers in 1974. Both used the same VW Group A01 platform, the same engines, and largely the same body. The two were sold side by side through 1978, but the cheaper, more basic-spec Polo outsold the Audi 50 almost immediately, and Audi discontinued its own version that year. The Polo continued and has been in continuous production ever since, now in its sixth generation, making the Audi 50 a rare instance of a Volkswagen that came from an Audi rather than the other way around.

How do I decode an Audi 50 chassis number?

Enter it into the tool at the top of this page. Because the Audi 50 predates the 17-character VIN standard entirely, expect a chassis-number breakdown rather than a full VIN decode: type designation (86), model year digit, and the variant and running number that together date and identify the car, using the pre-1980 VW Group scheme explained above.

Where is the chassis number on an Audi 50?

Stamped into the front body panel or bulkhead in the engine bay, and repeated on a small metal data plate in the same area. There is no windshield VIN plate or door-jamb sticker, since the Audi 50 was never built to US labeling requirements.

Why did Audi discontinue the 50 while the Polo continued for decades?

Two reasons. Commercially, the Polo undercut the Audi 50 on price and outsold it almost from the start. Strategically, Volkswagen Group’s holding-company board decided the Audi brand should focus on larger, pricier cars, which killed a planned Audi 50 facelift and led to its discontinuation in 1978. The Polo, sold as a Volkswagen rather than a premium-badged Audi, had no such conflict and kept evolving instead.

Can I get a vehicle history report for an Audi 50?

Not in the way you can for a modern US-market car. Services like Carfax rely on data collected inside the US and Canada: accident records, title records, insurance claims, odometer readings. An Audi 50 that spent its life in Europe will not have that trail unless imported and titled in the US decades ago. 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 Audi 50 has been stolen?

Stolen-vehicle databases for classic 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 on a car this old and rare to be far less complete than for a recent US vehicle. Matching the bulkhead stamp and data plate against the paperwork is your best safeguard before buying.

Decode any Audi 50 chassis number

Type the number from the bulkhead stamp, engine-bay data plate, or registration document into the decoder at the top of this page. Expect a chassis-number breakdown rather than a modern 17-character VIN decode, since this car predates that standard entirely. To go further:

• Audi VIN decoder hub for the brand-wide guide across all Audi 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-1980s and non-US vehicles like the Audi 50
• 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