Audi A6 C6 (2004–2011)Faults with the automatic gearbox
Automatic gearbox of the Audi A6 C6: problems and faults
In the Audi A6 C6 there are 7 documented faults with the automatic gearbox; the most important: wear of the variator chain and cones (Multitronic gearbox), control unit (TCU) failure and limp mode (Multitronic gearbox) and valve body and mechatronic failure: erratic shifts or a locked-up gearbox (ZF 6HP gearbox).
- Critical severity: Wear of the variator chain and cones · Multitronic gearbox
- High severity: Control unit (TCU) failure and limp mode · Multitronic gearbox
- High severity: Valve body and mechatronic failure: erratic shifts or a locked-up gearbox · ZF 6HP gearbox
- High severity: Wear and failures of the Multitronic automatic gearbox on front-wheel-drive versions · rest of the car
- Medium severity: Jerking and vibration when pulling away from cold (multi-plate clutch) · Multitronic gearbox
Most serious fault: Critical severity
Faults by engine
From most to least important. Check the affected years and versions on each page.
Faults on the rest of the car
Documented on this model, from most to least important.
Symptoms these faults cause
How much the repair costs
Depending on the fault, at an independent garage it ranges from €150[5][6] (jerking and harsh shifts from converter wear and ageing oil) to €1,000[3] (wear and failures of the Multitronic automatic gearbox on front-wheel-drive versions), including VAT. If the fault is caught in time, the repair is usually much cheaper.
Frequently asked questions
What faults with the automatic gearbox does the Audi A6 C6 have?
In the Audi A6 C6 there are 7 documented faults with the automatic gearbox; the most important: wear of the variator chain and cones (Multitronic gearbox), control unit (TCU) failure and limp mode (Multitronic gearbox) and valve body and mechatronic failure: erratic shifts or a locked-up gearbox (ZF 6HP gearbox). Each fault has its own page with the affected years and versions, the symptoms and how to check for it.
Automatic gearbox of the Audi A6 C6: how much does the repair cost?
Depending on the fault, at an independent garage it ranges from €150 (jerking and harsh shifts from converter wear and ageing oil) to €1,000 (wear and failures of the Multitronic automatic gearbox on front-wheel-drive versions), including VAT.
Which engines of the Audi A6 C6 have faults with the automatic gearbox?
The documented faults affect the Multitronic and ZF 6HP engines, and 1 fault is to the rest of the car. Check the years and versions on each page: they do not always affect every unit.
Have you had a fault with the automatic gearbox on your Audi A6 C6? Tell us at what mileage and how much you paid. Report your fault.
Sources
Every fact on this page links to its source. If you find an error, let us know.
- Schaeffler: RepSet für Audi Multitronic Getriebeamz · Motoring press · consulted 27 September 2026 · in German
- Typische Probleme & Haltbarkeit der MultitronicGebrauchtwagenberater · Motoring press · consulted 27 September 2026 · in German
- Fiabilité Audi A6 (2004-2010), pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
- Fiabilité Audi A8 (2002-2010), pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French
- El aceite de la caja de cambios automática que el fabricante no cambia: evita una avería de 3.000 eurosMotor16 · Motoring press · published 26 September 2026 · consulted 27 September 2026 · in Spanish
- El mantenimiento de la caja de cambios que evita una avería de más de 2.000 eurosMotor16 · Motoring press · published 21 September 2026 · consulted 27 September 2026 · in Spanish
- Fiabilité BMW X5 (2000-2007), pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French