Audi 100 VIN Decoder

Decode any Audi 100 VIN free in seconds. Type the 17-character vehicle identification number into the decoder above and pull the generation, model year, engine, plant of origin, and open NHTSA recalls, instantly, with no sign-up.

The Audi 100 is not a minor nameplate. It is the car that relaunched Audi as a serious manufacturer in 1968, ran through four generations (C1 to C4) into 1994, and became the direct ancestor of today’s A6. In the United States it also carried the “Audi 5000” badge for a decade, a name tied to one of the most disputed safety controversies in American automotive history. This page covers real VIN and chassis data verified against NHTSA’s records, the plants that built the car, the engines by generation, and the honest story of why the name changed twice.

About the Audi 100

Audi tracks the car internally with a “C” platform number, shorthand used in parts catalogs and by enthusiasts, not spelled out literally anywhere in the VIN itself.

Generation	Years (worldwide)	Type code	US market name and years	Built at
C1	1968-1976	Typ F104	Audi 100, 1970-1977	Ingolstadt and Neckarsulm, Germany
C2	1976-1982	Typ 43	Audi 5000, 1978-1982	Ingolstadt and Neckarsulm, Germany
C3	1982-1991	Typ 44	Audi 5000 (1983-1987), then Audi 100 / Audi 200 (1988-1991)	Neckarsulm, with early production also at Ingolstadt
C4	1990-1994	Typ 4A	Audi 100 / Audi 200-S4 (1992-1994)	Neckarsulm, Germany

The C1 launched November 26, 1968, powered by a 1.7-liter four making 100 PS, which is where the “100” name came from. Over 825,000 were built by 1976, widely credited with proving Audi could compete on its own after decades as a Volkswagen-owned survivor of the old Auto Union/DKW lineup. The C2 followed in 1976 with a genuine engineering first: the world’s first production gasoline inline-five engine. The C3, launched for the 1983 model year in the US, brought Audi’s quattro all-wheel drive to the model and a drag coefficient of 0.30, remarkably slippery for its era. The C4 arrived for 1991 in Europe and 1992 in the US with a 2.8-liter V6, and in 1994 the nameplate was retired in favor of the Audi A6, which the car has carried ever since.

We verified the plant split against real VINs decoded through NHTSA’s vPIC system: a 1986 Audi 5000 Avant (WAUGB0446GA090021) decodes to Ingolstadt, while a 1985 5000 S Turbo sedan, a 1989 Audi 200 wagon, and a 1994 Audi 100 CS sedan all decode to Neckarsulm, which had become the sole plant by the C4 generation, the same one that builds every Audi A6 today.

US-market engines by generation: the C2 and C3 Audi 5000 sold here exclusively with inline-five engines, 2.1 to 2.2 liters, naturally aspirated or turbocharged from 1980, plus a rare naturally-aspirated 2.0-liter diesel and a one-year-only 1983 turbodiesel, neither sold in California. The C4 dropped the five-cylinder for US buyers in favor of the 2.8-liter V6 across the Audi 100 CS and CS quattro lineup. Europe additionally got four-cylinder gas engines on early cars and TDI turbodiesels on later C3/C4 cars that never crossed the Atlantic.

The Audi 5000 controversy and the 100 name

Understanding why this car answers to three different names in the US requires the full timeline.

Audi badged the C2 and C3 as “Audi 5000” in North America from 1978 through 1987. Starting in 1982, NHTSA opened investigations into reports of sudden unintended acceleration, mostly while shifting into gear from a stop. Volkswagen of America issued service campaigns in 1982 (recall 82V-037) and 1983 (recall 83V-095) covering 1978-1983 Audi 5000s, tied to a failure mode in the idle-stabilizer valve that NHTSA’s own later review found could produce a brief, unintended surge of roughly 0.3g; Audi added a brake-shift interlock to keep drivers from shifting out of park without the brake applied.

The story became national news on November 23, 1986, when CBS’s “60 Minutes” aired a segment titled “Out of Control,” pairing victim accounts with a demonstration of an Audi lurching forward under its own power. That demonstration was later shown to have been rigged, using a canister of compressed air plumbed into the transmission to force the acceleration on camera. NHTSA’s own investigation, published in 1989, could not substantiate a vehicle defect as the primary cause and pointed instead to pedal placement (Audi’s pedals sat closer together than typical American cars) combined with driver error. By then the damage was done: US Audi sales collapsed from roughly 74,000 in 1985 to about 12,000 by 1991, and the brand took over a decade to recover.

Audi announced in April 1987 that it would retire the “5000” name; starting with the 1988 model year the same car reverted to “Audi 100” (and “Audi 200” for the turbocharged variant), the designation it had always used everywhere else in the world. This page covers the Audi 100 name across all four generations; a related nameplate, Audi 5000, covers the pre-1988 US-market cars specifically.

Audi 100 WMI codes (positions 1-3)

The first three characters of a VIN form the World Manufacturer Identifier, assigned by SAE on behalf of ISO. Every 17-character Audi 100, 5000, and 200 VIN we decoded through NHTSA’s vPIC, spanning 1985 through 1994 and both German plants, starts the same way:

WMI	Country	Vehicle type	Confirmed on
WAU	Germany	Audi passenger car	C3 and C4 Audi 5000, Audi 100, and Audi 200, built at both Ingolstadt and Neckarsulm

Audi has used WAU for its standard passenger cars since the 17-character VIN era began, regardless of which German plant built the car. A VIN claiming to be an Audi 100 or 5000 that doesn’t start with WAU is worth double-checking against the decoder above.

How to read an Audi 100 VIN, position by position

Every Audi 100, 5000, and 200 built for the US market from the 1981 model year forward uses the 17-character ISO 3779 standard. Earlier cars are a different story, covered below.

Positions 1-3: World Manufacturer Identifier

See the WMI table above. Position 1 (W) identifies Germany as the country of assembly; it does not change whether the car came from Ingolstadt or Neckarsulm; that distinction shows up later, at position 11.

Positions 4-8: Vehicle Descriptor Section (VDS)

This is where body, engine, and restraint data live, but Audi doesn’t isolate the engine to one clean digit; real decoded VINs show positions 4-8 moving together as a block, best read as a whole.

Year	US badge	Body	Engine	Plant	VIN
1985	Audi 5000 (S Turbo)	Sedan	5-cylinder, 2.1L gasoline	Neckarsulm	WAUHC0448FN054730
1986	Audi 5000	Avant wagon	5-cylinder gasoline	Ingolstadt	WAUGB0446GA090021
1986	Audi 5000 (CS Turbo Quattro)	Sedan	5-cylinder, 2.2L gasoline, quattro AWD	Neckarsulm	WAUHE0441GN036212
1989	Audi 200 (Quattro)	Avant wagon	5-cylinder gasoline, quattro AWD	Neckarsulm	WAUHC0448KN005473
1991	Audi 200 (Quattro Turbo)	Avant wagon	5-cylinder gasoline, quattro AWD	Neckarsulm	WAUHE5443MN018786
1994	Audi 100 CS	Sedan	V6, 2.8L gasoline, quattro AWD	Neckarsulm	WAUDK84A3RN062650

Notice that positions 4-5 vary between “HC,” “GB,” and “HE” across otherwise similar sedans and wagons, while positions 6-8 don’t cleanly isolate turbo from naturally aspirated, or quattro from front-wheel drive, on their own. Feed the full VIN into the decoder above rather than reading the engine off one digit.

Position 9: Check digit

Calculated from the other 16 characters using fixed weighting and modulo-11 math, the check digit catches typos. Every VIN in this guide decoded clean against NHTSA’s system; a single mistyped character anywhere else in the string breaks the math, and any compliant decoder, DMV, or insurer will reject it.

Position 10: Model year

The 10th character maps to model year on the industry-wide 30-year cycle defined by ISO 3779. Scoped to the years an Audi 100, 5000, or 200 with a full 17-character VIN could have left the factory:

Char	Year	Char	Year
B	1981	K	1989
C	1982	L	1990
D	1983	M	1991
E	1984	N	1992
F	1985	P	1993
G	1986	R	1994
H	1987
J	1988

The letters I, O, and Q are never used, since they’re easily confused with 1 and 0; that’s why the sequence skips from H to J and from N to P. We confirmed several points directly: F decoded to 1985 on a real Audi 5000 VIN, G to 1986, K to 1989, M to 1991, and R to 1994 on the last Audi 100 before the A6 took over. Because the cycle repeats every 30 years, a “B” alone could mean 1981 or 2011; no Audi wore the 100 or 5000 name in 2011, so context resolves it here.

Position 11: Assembly plant

A single character narrows the VIN to a specific German factory:

Char	Plant	Confirmed on
A	Ingolstadt, Germany	1986 Audi 5000 Avant
N	Neckarsulm, Germany	1985-1994 Audi 5000, Audi 200, and Audi 100, sedans and Avants

Every other VIN we decoded came back Neckarsulm, the primary home of this car by the C3 generation and its exclusive plant by the C4.

Positions 12-17: Serial number

The final six characters are the production sequence stamped on that specific car as it left the line, making the full 17-character string unique to that one vehicle.

Chassis numbers before the 17-character VIN

The 17-character, ISO 3779-based VIN became mandatory in the US starting with the 1981 model year. Before that, US regulations required only a shorter identification number, typically 11 to 13 characters, with no fixed international format, and manufacturers structured the middle characters however they liked. A C1 Audi 100 sold new in the US between 1970 and 1977, or an early C2 Audi 5000 from 1978-1980, carries one of these shorter, pre-standard numbers rather than a 17-character VIN, and Audi’s own internal chassis-numbering conventions for that era aren’t captured by any modern WMI or VDS table. Treat the number as a chassis identifier tied to Audi’s factory records, and see our classic car VIN decoder guide for how to approach it.

Where to find the VIN on an Audi 100

• Lower-left corner of the windshield, visible from outside the car (required on US-market cars from the late 1960s onward)
• Driver’s side door jamb or door post (data plate with VIN, paint code, and equipment codes)
• Engine bay, stamped on the firewall or front bulkhead
• Vehicle title, registration, and, on European-market cars, the Certificate of Conformity

The windshield and door jamb are fastest to check in person; the firewall stamp is physically tied to the body shell, so check it if you suspect the other labels were swapped.

Check recalls and safety information

The Audi 100 and 5000’s recall history is unusually well documented, thanks to the scrutiny after 1986. Beyond the idle-stabilizer and shift-interlock campaigns above, Audi ran further service actions through 1987, and later C3/C4 model years saw the more routine recalls typical of any 1980s or 1990s car, covering items like fuel system components and restraints.

To check your specific car:

1. Decode the VIN with the tool above to confirm the exact generation, model year, and market badge
2. Cross-reference the 17-character VIN (or, for pre-1981 cars, the chassis number) with the NHTSA recall database
3. Contact an Audi service center or an independent specialist familiar with the model for any open campaign repair

Recall repairs are free of charge regardless of the vehicle’s age or ownership history, though on a car this old, parts availability for a decades-closed campaign can be limited.

Frequently asked questions

How do I decode an Audi 100 VIN?

Type the 17-character VIN from the windshield, door jamb, or title into the decoder above. Results return in seconds: generation (C1 through C4), model year, engine, plant of origin, and open NHTSA recalls where applicable. Pre-1981 cars use a shorter chassis number instead; see the section above on that era.

Is the Audi 100 the same car as the Audi 5000?

Yes, for the C2 and C3 generations. Audi badged the same car “Audi 5000” in the US and Canada from 1978 through 1987, then reverted to the “Audi 100” name (and “Audi 200” for the higher-performance variant) used everywhere else in the world, starting with the 1988 model year, following the sales collapse tied to the 1986 controversy. The C1 (1970-1977, sold in the US as “Audi 100”) and C4 (1992-1994, also “Audi 100”) never carried the 5000 name.

What caused the Audi 5000 unintended acceleration controversy?

A combination of factors. Real mechanical issues with the idle-stabilizer system triggered two NHTSA recalls in 1982 and 1983. The story became a national scandal after a November 1986 “60 Minutes” segment later found to have used a rigged demonstration (a compressed-air canister forcing the transmission to move). NHTSA’s own 1989 investigation could not confirm a vehicle defect as the primary cause and pointed to pedal placement and driver error instead, but by then US sales had already collapsed.

How can I tell which generation my Audi 100 is from the VIN?

There’s no single character that spells out “C1,” “C3,” or “C4” directly. The fastest approach is decoding the full VIN with the tool above, which cross-references the VDS block at positions 4-8 against the model year at position 10. For a rough manual check, position 10 alone narrows it: any letter from B through R decoding to 1981-1994 rules out the C1 (which predates the 17-character VIN entirely).

Is the Audi 100 VIN decoder free?

Yes, with no sign-up, covering everything the factory (or, for pre-1981 cars, Audi’s own chassis records) stamped into the identification number. A full vehicle history report, covering accidents, odometer readings, and prior ownership, is an optional paid upgrade, and our guide on VIN decoder vs. vehicle history report explains the difference.

Can an Audi 100 VIN be faked?

The 17 characters can be retyped on a counterfeit plate, but the check digit at position 9 catches most single-character changes through math, and the firewall stamp is physically tied to the original car. On a car this old, a mismatched VIN is sometimes just a decades-old title error rather than fraud, so treat it as a reason to investigate, not automatic proof of theft. Our guide how to check if a car is stolen by VIN covers the next steps either way.

Decode any Audi 100 VIN free

Type your VIN or chassis number into the decoder at the top of this page for an instant breakdown. To go deeper:

• Audi VIN decoder hub for the brand-wide guide
• How to read a VIN number for the general standard
• What every character in a VIN means for a position-by-position reference
• Classic car VIN decoder for pre-1981 vehicles, including the early Audi 100 C1
• 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 verifying a used Audi before you buy
• 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