Citroën C4 X

Additional Notes

• Both the Citroën C4 X 1.2 PureTech 130 (HNS) and the 1.5 BlueHDi 130 (YHZ), introduced in 2022, share identical automatic transaxle fluid capacities across their respective fill types.
• The dry fill capacity for each configuration is 6 liters. A dry fill represents the total fluid volume required when filling a completely drained or newly assembled transmission, including all internal passages and the torque converter.
• The service fill capacity is listed as a range of 2.5 to 3.5 liters for both configurations. A service fill reflects the amount of fluid displaced during a routine drain-and-refill procedure, which typically leaves residual fluid in the torque converter and valve body.
• The gap between the 6-liter dry fill and the 2.5-to-3.5-liter service fill range indicates that a standard service procedure replaces roughly 40 to 58 percent of the total fluid volume in the transaxle.
• The service fill is expressed as a range rather than a fixed value, which is common in automatic transmissions where the exact amount recovered during a drain can vary depending on fluid temperature, drain duration, and the specific drain points accessed.
• Both rows are designated under normal use conditions, meaning the listed service fill range applies to standard operating environments rather than severe-duty cycles such as frequent towing or extreme temperature exposure.
• The shared capacity figures across the petrol HNS and diesel YHZ engine codes suggest both are paired with the same automatic transaxle unit, despite differing in fuel type and internal combustion architecture.