Citroën C5 X (2022–today)Faults with the automatic gearbox
Automatic gearbox of the Citroën C5 X: problems and faults
In the Citroën C5 X there are 3 documented faults with the automatic gearbox: valve body failure leading to immobilisation or gearbox replacement (EAT6/EAT8 gearbox), jerking and hesitation when changing gear, especially when cold (EAT6/EAT8 gearbox) and gearbox oil advertised as "lifetime" that is best changed preventively (EAT6/EAT8 gearbox).
- High severity: Valve body failure leading to immobilisation or gearbox replacement · EAT6/EAT8 gearbox
- Medium severity: Jerking and hesitation when changing gear, especially when cold · EAT6/EAT8 gearbox
- Medium severity: Gearbox oil advertised as "lifetime" that is best changed preventively · EAT6/EAT8 gearbox
Most serious fault: High severity
Problems with the automatic gearbox on the the EAT6/EAT8 gearbox
From most to least important. Check the affected years and versions on each page.
Symptoms these faults cause
How much the repair costs
Depending on the fault, at an independent garage it ranges from €150[2] (gearbox oil advertised as "lifetime" that is best changed preventively) to €2,000[1] (jerking and hesitation when changing gear, especially when cold), including VAT. If the fault is caught in time, the repair is usually much cheaper.
Parts for the Citroën C5 X for faults with the automatic gearbox
The same search across several shops so you can compare prices. The part number varies with the engine and year: confirm it with the registration plate or VIN.
EAT6-EAT8 valve body / hydraulic block
Complete EAT6/EAT8 gearbox (new or reconditioned)
EAT6/EAT8-specific ATF oil and filter
Affiliate links: if you buy from these shops, MotorFiable may receive a commission at no cost to you. Check compatibility against the registration plate or VIN before ordering. Affiliate links
Frequently asked questions
What faults with the automatic gearbox does the Citroën C5 X have?
In the Citroën C5 X there are 3 documented faults with the automatic gearbox: valve body failure leading to immobilisation or gearbox replacement (EAT6/EAT8 gearbox), jerking and hesitation when changing gear, especially when cold (EAT6/EAT8 gearbox) and gearbox oil advertised as "lifetime" that is best changed preventively (EAT6/EAT8 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 Citroën C5 X: how much does the repair cost?
Depending on the fault, at an independent garage it ranges from €150 (gearbox oil advertised as "lifetime" that is best changed preventively) to €2,000 (jerking and hesitation when changing gear, especially when cold), including VAT.
Which engines of the Citroën C5 X have faults with the automatic gearbox?
The documented faults affect the EAT6/EAT8. 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 Citroën C5 X? 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.
- El cambio de aceite de la caja de cambios que evita una avería de 2.000 eurosMotor16 · Motoring press · published 24 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 Peugeot 508 2 (2018), pannes et témoignagesFiches-auto.fr · Owners' forum · consulted 27 September 2026 · in French