About the Audi 100
Produced from 1968 to 1994, the Audi 100 established itself as a premium executive car that combined German engineering with understated elegance. The fourth and final generation (C4, 1990-1994) is most commonly available today, featuring aerodynamic styling, advanced galvanised bodywork, and a range of petrol and diesel engines. The C3 generation (1982-1991) also appears regularly on the used market, prized for its build quality and period styling. Both generations offered saloon and Avant estate body styles, with front-wheel drive as standard and quattro all-wheel drive available on selected models.
The Audi 100 paved the way for the A6 nameplate that replaced it, and today these models attract enthusiasts who appreciate classic executive cars with genuine usability. Well-maintained examples offer a compelling blend of comfort, space, and reliability, whilst quattro variants provide the added appeal of all-weather capability.
What Affects the Price of a Used Audi 100
Year and generation significantly impact value, with late C4 models (1992-1994) commanding premiums due to their more modern features and galvanised bodies that resist corrosion better. Quattro all-wheel drive variants typically fetch £3,000-£6,000 more than equivalent front-wheel drive models due to their rarity and desirability amongst enthusiasts.
Mileage remains a critical factor, with sub-80,000-mile examples commanding top prices. Service history is paramount—cars with complete documentation and evidence of timing belt changes sell for considerably more than those without. Engine choice matters too, with the 2.3-litre five-cylinder petrol and 2.5 TDI diesel being particularly sought-after for their character and longevity respectively.
Condition is crucial given the age of these vehicles. Rust-free bodywork, original unmarked interior trim, and functioning electrical systems all add substantial value. Avant estate models often carry a £1,000-£2,000 premium over saloons. Originality matters to collectors, with unmodified examples in period colours fetching more than heavily modified or resprayed cars.
Tips for Buying a Used Audi 100
Inspect the bodywork thoroughly for corrosion, particularly around the rear arches, sills, and front wings on C3 models. C4 models benefit from galvanised panels but check the subframe, suspension mounting points, and boot floor. Use a magnet to detect filler in previously repaired areas.
Verify the service history meticulously—timing belt replacement is essential every 60,000 miles or five years, and failure leads to catastrophic engine damage. Check for oil leaks from the valve cover gasket and camshaft seals. On quattro models, listen for transmission whine and test the differential operation on full lock.
Examine the interior for worn seat bolsters, cracked dashboard tops (common on C3 models), and check all electrical functions including the climate control system and power windows. Test drive should reveal smooth gearbox operation, no steering play, and absence of brake judder. Documentation proving UK road tax status and MOT history adds confidence. Budget for maintenance—parts remain available but specialist knowledge may be required for some repairs.