Used Audi A6 for sale in Europe

About the Audi A6

The Audi A6 is a large executive car that Audi has built since 1994. It is sold as a saloon and as the Avant estate, and the allroad version has raised suspension. It suits drivers who want space, motorway comfort and the option of quattro all-wheel drive.

Engines vary widely by generation. They include four-cylinder and V6 petrol units, TDI diesels, and later mild-hybrid and plug-in hybrid versions. Older cars can also be found with CNG or LPG systems. Gearboxes include manual, conventional automatic, CVT-type Multitronic and S tronic dual-clutch units.

Our listings span a very long period, so condition and servicing matter more than the badge. Recent listings also include the electric A6 e-tron. Check the exact engine, gearbox and drive type of any car you compare, because they affect both the checks you need and the running characteristics.

Generations

• C4 (1994-1997) — The first car to carry the A6 name, replacing the Audi 100, with saloon and Avant bodies and quattro available.
• C5 (1997-2004) — A rounded redesign with a broad range of petrol V6 and TDI diesel engines, and the basis for the first allroad quattro.
• C6 (2004-2011) — Introduced the large single-frame grille and offered FSI petrol and V6 TDI engines in saloon and Avant forms.
• C7 (2011-2018) — A lighter body with more efficient petrol and diesel engines, sold as saloon, Avant and allroad.
• C8 (2018-present) — Brought mild-hybrid systems, a more digital interior and plug-in hybrid versions, with the electric A6 e-tron arriving from 2024.

Typical prices

Asking prices in our listings rise steadily with newer model years. Cars from 2012 have a median asking price of €9,500, and 2019 cars have a median of €26,000. The 2023 median is €35,300. Listings from 2026 reach a median of €66,900, which includes near-new cars and so is not a like-for-like comparison with older ones. Cars from the early 2000s are far cheaper, and their prices depend mainly on condition and service history. Within any year, trim, engine and mileage move the price. These are asking prices in our listings on 2026-11-10, not a valuation.

Based on our listings as of 2026-11-10. These are asking prices, not a valuation.

What to check when buying a used Audi A6

Ask for the full service history and check that mileage and dates agree across the invoices, the MOT or inspection records and the car itself. Test every electrical function and drive the car cold if you can.

• Service history and records

  Look for regular oil changes, gearbox services and timely timing belt or chain work where the engine needs it. Gaps in the record matter more on complex engines and on cars with high mileage.

• Front suspension wear · C4 and C5 (1994-2004)

  The multi-link front suspension on the C5 is widely known for worn control arm bushes and joints. Listen for knocks over bumps, look for uneven tyre wear and check the steering for vagueness at speed.

• Timing belt and chain · Older petrol and diesel cars

  Some engines use a belt with a fixed change interval, and others use a chain that can stretch. Ask for proof of the last belt change and listen for rattle on a cold start.

• Oil consumption and chain · 2.0 TFSI petrol engines

  Owners and workshops widely discuss oil consumption and timing chain tensioner wear on some four-cylinder TFSI engines from the late 2000s and early 2010s. Check the oil level, ask about top-ups and look for warning lights.

• Automatic gearbox behaviour · Multitronic and S tronic gearboxes

  The Multitronic CVT on front-wheel-drive cars and the S tronic dual-clutch gearbox both need a careful test drive. Look for judder, slipping, delayed engagement or warning messages, and ask whether the gearbox oil was changed.

• Emissions equipment · TDI diesels

  Check for diesel particulate filter, EGR valve and, on newer cars, AdBlue system faults. Short-trip use can clog these parts, so look for warning lights and ask how the car was used.

• Hybrid system checks · C8 hybrid and plug-in versions

  On mild-hybrid and plug-in cars, check that the dashboard shows no hybrid faults and that the charging socket and cable work. Ask for a dealer diagnostic report on the high-voltage battery if possible.

Frequently asked questions