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About the Audi 100
The Audi 100 was the brand's large executive saloon from 1968 until 1994, when the A6 name replaced it. It was sold as a saloon, with a coupé in the first generation and an Avant estate from the second generation onward. It suits buyers who want a roomy, comfortable older car with a distinctive design and a long enthusiast following.
Engines changed a lot across the range. Early cars use four-cylinder petrol engines. Later cars add five-cylinder petrol and diesel units, turbocharged versions, and in the 1990s V6 petrols and a five-cylinder TDI. Front-wheel drive was usual, with quattro four-wheel drive offered on some later models. Manual and automatic gearboxes were both sold.
Our listings include petrol, diesel and LPG cars. LPG is usually an aftermarket conversion, so ask for its paperwork and service record. Some listings carry unusual fuel labels, so read the description and photos closely. Condition ranges from daily-use cars to restored classics, so it varies widely even within one model year.
Generations
- C1 (1968-1976) — The first Audi 100 was a front-wheel-drive saloon with four-cylinder petrol engines, and a two-door Coupé S joined the range in 1970.
- C2 (1976-1982) — The second generation introduced five-cylinder engines to the range and added an Avant estate body.
- C3 (1982-1990) — The C3 is known for its smooth, aerodynamic body and offered petrol, turbo and diesel engines.
- C4 (1990-1994) — The final generation added V6 petrol engines and a 2.5-litre five-cylinder TDI, before the A6 name replaced the 100.
Typical prices
Across our listings the median asking price is €4,000, with the middle half of cars between €2,500 and €7,500. Condition and originality shape the price more than age alone. Cars from the early 1970s are listed far higher, for example a median of €11,900 for 1973, but there are only a handful of cars per year at that end. Cars from the mid-1980s to the mid-1990s sit in a much tighter band. Wide gaps within one year usually reflect condition, engine and specification. These are asking prices in our listings on 2026-11-10, not a valuation.
| Year | Listings | Lower quarter | Median | Upper quarter |
|---|---|---|---|---|
| 1970 | 5 | €7,600 | €11,900 | €13,500 |
| 1971 | 4 | €7,500 | €10,000 | €12,200 |
| 1972 | 3 | €10,700 | €15,900 | €22,900 |
| 1973 | 9 | €8,900 | €11,900 | €15,400 |
| 1975 | 4 | €7,300 | €9,400 | €11,600 |
| 1976 | 4 | €6,300 | €8,300 | €8,900 |
| 1977 | 4 | €6,400 | €8,400 | €10,100 |
| 1978 | 8 | €9,000 | €9,700 | €17,300 |
| 1980 | 6 | €2,100 | €4,000 | €7,700 |
| 1981 | 5 | €3,500 | €4,900 | €6,300 |
| 1982 | 4 | €1,600 | €1,800 | €3,200 |
| 1983 | 8 | €2,900 | €5,200 | €7,400 |
| 1984 | 3 | €3,600 | €5,800 | €7,500 |
| 1985 | 8 | €2,000 | €2,900 | €4,700 |
| 1986 | 24 | €2,700 | €4,100 | €5,900 |
| 1987 | 30 | €2,500 | €3,900 | €7,000 |
| 1988 | 32 | €2,600 | €4,500 | €7,000 |
| 1989 | 43 | €2,300 | €3,500 | €4,900 |
| 1990 | 49 | €2,000 | €4,000 | €8,300 |
| 1991 | 62 | €2,500 | €3,500 | €5,400 |
| 1992 | 55 | €2,700 | €4,000 | €8,000 |
| 1993 | 38 | €2,500 | €4,000 | €7,400 |
| 1994 | 22 | €2,200 | €4,700 | €6,700 |
| 1995 | 4 | €3,100 | €3,600 | €4,900 |
| 1996 | 4 | €5,700 | €7,600 | €8,100 |
Based on our listings as of 2026-11-10. These are asking prices, not a valuation.
What to check when buying a used Audi 100
Inspect the body first, then the service history, and drive the car cold if you can. Compare several examples, as condition differs more than age or mileage suggest.
Rust and body repairs
Check sills, wheel arches, door bottoms, boot floor and the areas around windscreen and rear window. Look under carpets and mats for damp. Uneven panel gaps or fresh underseal can point to past repairs, so ask for photos or invoices.
Timing belt and service record · Five-cylinder and V6 petrol
These engines use a timing belt, so look for proof of when it was last changed, along with the water pump and tensioner. Without proof, assume the work is due. Also check for oil leaks and uneven idle.
Turbo condition · Turbo petrol
On turbocharged engines, listen for whining, look for blue smoke on the overrun and check for oil around the turbo and pipes. Ask whether the engine was allowed to idle before shutdown, as that affects turbo life.
Cold starting and smoke · Diesel and TDI
Start the engine from cold and watch for heavy smoke, long cranking or rough running. On TDI models, check for fuel or oil leaks and ask what injection and belt work has been done and when.
Gearbox and drivetrain
Try every gear on a test drive. Automatics should shift without flare or harsh engagement. Listen for driveshaft clicks on full lock and check for clutch slip or noise, especially on quattro models.
Electrics and interior wear
Test windows, central locking, heater fan, climate control and all warning lights. Older wiring, switches and trim can be worn or faulty. Replacement interior parts may be hard to find, so check completeness.
LPG conversion paperwork · LPG cars
If the car has an LPG system, ask who fitted it and for the inspection and service records. Check the tank, pipes and fittings for corrosion, and confirm that the car also runs correctly on petrol.
Frequently asked questions
Which Audi 100 generation should I look for?
It depends on your purpose. The C1 and C2 suit those after an older classic. The C3 and C4 are more practical for regular use, with more engine choice and easier parts support. Decide on body style and engine first, then compare condition across several cars.
What should I inspect on a used Audi 100?
Start with rust on sills, arches and floors, then the service history. Check timing belt records on belt-driven engines, listen for turbo or gearbox noise, and test all electrics. Ask for invoices and, if possible, have a specialist inspect the car before purchase.
How does the price of an Audi 100 depend on year and mileage?
In our listings, the oldest cars are often priced higher, as they are collectors' items, while cars from the mid-1980s to mid-1990s sit in a tighter band. Condition, originality and history usually matter more than mileage alone, so compare similar cars.
Are LPG-equipped Audi 100s a good idea?
LPG systems are normally aftermarket conversions, so quality varies. Ask for the installer's details, inspection records and service history. Check the tank and lines for corrosion, and make sure the engine runs well on petrol too.
Is the Audi 100 the same as the A6?
No, but they are related. Audi used the 100 name until 1994 and then introduced the A6 as its successor. The last 100, the C4, is closely related to the first A6. Check the registration papers for the exact model and year.