Citroën C3 Aircross

Automatic transmission fluid capacity & service interval

Citroën C3 Aircross automatic transmission fluid capacity ranges from 2,1 to 7 liters. Service intervals include normal use and filled for life. The data covers 5 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
C3 Aircross 1.2 PureTech 110, HNP (2018- )
  • Use: Normal
  • Capacity 7 liter (Dry fill)
  • Capacity 3-4 liter (Service fill)
  • Code: AT6 III 6/1
C3 Aircross 1.2 PureTech 130, HNS (2018- )
  • Use: Normal
  • Capacity 7 liter (Dry fill)
  • Capacity 3-4 liter (Service fill)
  • Code: AT6 III 6/1
C3 Aircross 1.5 BlueHDi 120, YHX (2018-2023)
  • Use: Filled for life
  • Capacity 7 liter (Dry fill)
  • Capacity 3-4 liter (Service fill)
  • Code: AT6 III 6/1
C3 Aircross 1.2 PureTech 110, HNV, HNZ (2017-2018)
  • Use: Normal
  • Capacity 7 liter (Dry fill)
  • Capacity 3-4 liter (Service fill)
  • Code: AT6 III 6/1
C3 Aircross 1.6 BlueHDi 115, BHX (2017-2019)
  • Use: Normal
  • Capacity 2,2 liter (Dry fill)
  • Capacity 2,1 liter (Service fill)
  • Code: MCP 6/1

Additional Notes

  • The Citroën C3 Aircross automatic transaxle configurations for the 1.2 PureTech 110 (HNP), 1.2 PureTech 110 (HNV, HNZ), 1.2 PureTech 130 (HNS), and 1.5 BlueHDi 120 (YHX) all share a dry fill capacity of 7 liters, indicating the total fluid volume required when filling a completely drained or rebuilt unit from empty.
  • The service fill range of 3-4 liters across the four automatic transaxle variants reflects the volume typically displaced during a routine fluid exchange, where residual fluid remains in the torque converter and passages after draining.
  • The 1.6 BlueHDi 115 (BHX), covering 2017-2019, carries a semi-automatic transaxle rather than a fully automatic unit, and I note a substantially smaller dry fill capacity of 2.2 liters compared to the 7-liter figure seen in the other configurations.
  • The semi-automatic transaxle in the 1.6 BlueHDi 115 (BHX) also has a service fill of 2.1 liters, which is nearly identical to the dry fill of 2.2 liters, suggesting very little fluid is retained in the unit after draining.
  • The 1.5 BlueHDi 120 (YHX) spanning 2018-2023 carries a "filled for life" use condition tied to the 3-4 liter service fill, meaning the manufacturer does not schedule periodic fluid replacement under normal operating conditions for that interval.
  • The 1.2 PureTech 110 with engine codes HNV and HNZ covers 2017-2018, while the HNP variant begins in 2018, indicating a mid-generation engine code transition within the same displacement and power output, yet both share identical dry and service fill capacities.
  • The three PureTech petrol variants and the 1.5 BlueHDi 120 diesel all specify a service fill range rather than a fixed value, with the 3-4 liter spread accounting for variability in residual fluid volume retained after draining depending on procedure and temperature.

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