Audi 100
Audi's executive-car line across four generations, introduced in 1968 and renamed A6 in Germany in 1994, with a separate production history in China.
Overview
The Audi 100 was Audi’s larger mainstream passenger-car line, developed through four generations known as C1, C2, C3 and C4. It began in 1968 as a front-wheel-drive saloon and became an important foundation of the marque’s executive-car business. Successive versions introduced the five-cylinder engines, aerodynamic bodywork, corrosion protection and diesel technology associated with Audi’s move upmarket. The A6 name succeeded Audi 100 in 1994; that naming change belongs within the C-series lineage rather than marking its beginning. Model-line history — Audi.
The familiar 1968–1994 span describes the German Audi 100 lineage before the A6 transition. It should not be used as a universal endpoint for overseas manufacture. Chinese assembly began with the older C3, and its development followed a separate timetable.
Origins and production centres
The project emerged while Volkswagen was establishing control of Auto Union in the mid-1960s. Technical director Ludwig Kraus pursued a larger Audi despite instructions to concentrate on existing models. He saw a new product as essential to Auto Union’s future at a time when the Ingolstadt works also assembled Volkswagen Beetles. Volkswagen subsequently approved the proposal.
Audi presented the 100 in November 1968. Its success helped establish an independent role for Audi within the Volkswagen Group. Production began at Ingolstadt, Germany; growing demand led to the transfer of Audi 100 production to Neckarsulm in 1970. These are manufacturing locations, distinct from the company’s changing corporate name and headquarters. Development and manufacturing history — Audi France, November 1968 announcement — Audi.
Four generations
The dates below describe the principal European generation periods under the Audi 100 name. They are not a list of national model years. In particular, the C3 and C4 transition overlaps in 1990–1991, and an Avant’s introduction need not coincide with that of its corresponding saloon.
C1: the original Audi 100 (1968–1976)
The first generation established the line around a front-mounted four-cylinder petrol engine and front-wheel drive. Its conventional saloon silhouette, with a separate boot and relatively upright passenger compartment, preceded the much more aerodynamic shapes of later generations. Two-door and four-door saloons belonged to the range; a two-door saloon should not be confused with the separately styled Coupé S. The second-generation programme continued the two saloon configurations. Early range and its successor — Audi Tradition, Anniversary Dates 2026, pages 9–12.
The 100 Coupé S added a lower fastback form influenced by contemporary Italian styling. Audi showed it at Frankfurt in September 1969, but market launch followed in October 1970. It had its own equipment and chassis details, including ventilated front disc brakes, and was a distinct body variant within the original 100 family. Coupé S history — Audi Tradition, Anniversary Dates 2025, page 17.
C2: five cylinders and the first Avant (1976–1982)
Presented in August 1976, the C2 developed the executive-car brief with greater emphasis on comfort and safety. Its longer glass areas changed the visual proportions. Four-cylinder petrol engines remained available, while the five-cylinder 5E became the more prestigious choice. The Avant joined in 1977 as a five-door hatchback with a sloping rear body and large tailgate. This first Avant was not the conventional estate shape later associated with the name. Manual and torque-converter automatic transmissions were offered. C2 introduction and body range — Audi Tradition, Anniversary Dates 2026, pages 9–10.
Audi’s inline-five developed from the Volkswagen Group’s EA 827 four-cylinder engine concept. An inline-six would have created packaging and weight-distribution difficulties. The fuel-injected 2,144 cc five-cylinder produced 100 kW (136 PS) in the original 100 5E specification. Audi presented the engine in 1976, but customer deliveries began in March 1977. A naturally aspirated five-cylinder diesel followed in 1978. These were additions to the model range, not specifications shared by every C2. Five-cylinder development and delivery chronology — Audi.
C3: aerodynamics, corrosion protection and TDI (1982–1991)
The third generation gave the 100 a markedly smoother, more aerodynamic body. Audi quotes a drag coefficient of 0.30 for the saloon in its historical account. That headline value should not be applied indiscriminately to every engine, tyre configuration or body style. Audi’s own heritage catalogue places the C3 in the 1982–1991 period. C3 engineering and period — Audi.
An Avant followed in 1983, now taking an estate form while retaining a strongly sloping rear window. The generation later received a facelift with revised door handles and interior details in 1988. This remained the C3 rather than a fifth Audi 100 generation. Avant and facelift chronology — Audi100-Online historical archive.
Front-wheel drive continued, with permanent quattro all-wheel drive available on selected versions. Full body galvanisation arrived with the autumn 1985 update to the 100/200 range, using zinc-coated steel to improve corrosion resistance. It was a production change during the C3’s life, not a feature to assume on every car built from 1982. Body-protection update — Audi Tradition, Anniversary Dates 2025, page 13, quattro within the 100 line — Audi Australia.
At Frankfurt in 1989, Audi presented the 100 TDI with a 2.5-litre five-cylinder turbo diesel, direct injection and electronic engine management. Audi quotes 88 kW (120 PS) for this C3 application. The TDI combined these technologies in an executive car; its specification should be kept separate from earlier indirect-injection diesels and later TDI versions. TDI introduction — Audi.
C4: the final Audi 100 and the A6 transition (1990–1994)
The fourth generation continued the saloon and Avant branches and brought V6 petrol power into the 100 range. Automobile Club d’Italia’s historic-vehicle register lists the fourth-series saloon and 2.8 V6 versions for 1990–1994, with the corresponding Avant entries beginning in 1991. Its listings distinguish ordinary and quattro versions, rather than describing all C4s as all-wheel-drive cars. These European dates should not be substituted for a particular export market’s model-year sequence. C4 saloon, Avant and V6 entries — ACI, page 2.
The performance S4 also belonged to this larger-car family: it should not be confused with later S4s associated with the A4 line. In the 1994 naming transition, the 100 became A6 and the C4 performance branch became S6. The first A6 therefore continued the fourth C-series generation. C-series naming — Audi, early S4 and S6 entries — ACI, pages 2–3.
Markets and names
The Audi 5000 was an export-market designation connected with the 100 family. Audi’s account of a US-market C2 5000 S identifies larger bumpers, rectangular twin headlamps and market-specific equipment. A 5000 badge is consequently not evidence of an additional global generation. US-market C2 details — Audi.
The related Audi 200 occupied a higher position in the range. Its specifications cannot simply be copied across to an Audi 100 or 5000: Audi’s documentation distinguishes the emissions-controlled US 5000 S turbo and its automatic transmission from the European 200 5T. European and US turbo derivatives — Audi Tradition, Anniversary Dates 2025, page 14.
China formed a separate manufacturing chapter. Under a 1988 licence agreement with First Automotive Works (FAW), Audi 100 assembly began from imported parts kits at Changchun. Audi production was integrated into the FAW-Volkswagen joint venture in 1995. This C3-based programme helped establish Audi’s Chinese presence; it should not be dated by the German C4-to-A6 naming change. The sources cited here establish the start and organisational transition, rather than a precise final build date for every Chinese 100 derivative. Chinese assembly history — Audi France, C3’s role in China — Audi.
Historical significance
The 100 gave the revived Audi marque room to grow beyond its initial post-war range. Its importance accumulated across generations: the C1 established the larger-car business, the C2 brought five-cylinder identity and the Avant name, and the C3 made efficiency and durability central to the executive-car proposition. The C4 carried that development into the A6 era. The line also linked Ingolstadt and Neckarsulm production with Audi’s early manufacturing presence in China.
For a contrasting later approach to Audi design, see the compact TT coupé and roadster.