Mercedes-Benz Citan, 420 (EU)
Automatic transmission fluid capacity & service interval
Mercedes-Benz Citan, 420 (EU) automatic transmission fluid capacity ranges from 3,5 to 4 liters. The data covers 3 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Citan 110 CDI, 420.623/723 (2021- ) |
|
| Citan 112 CDI, 420.633/733 (2021- ) |
|
| Citan 113, 420.663/763 (2021- ) |
|
Additional Notes
- The Mercedes-Benz Citan 420 (EU) automatic transmission fluid specifications cover three variants introduced from 2021: the 110 CDI (420.623/723), 112 CDI (420.633/733), and 113 (420.663/763).
- All three variants share an identical capacity structure, with an initial fill of 4 liters and a service fill of 3.5 liters across the board.
- The initial fill of 4 liters represents the total fluid volume required when the transaxle is completely dry, such as during a full overhaul or replacement of the unit.
- The service fill of 3.5 liters is the quantity used during a routine fluid change, accounting for residual fluid that remains in the transaxle after draining.
- The 0.5-liter difference between initial and service fill capacities reflects the volume of fluid that cannot be fully evacuated through a standard drain procedure.
- All three variants are noted as transaxle, semi-automatic configurations, meaning the gearbox and final drive share a common housing with automated clutch and gear actuation rather than a conventional torque converter setup.
- The capacity values listed apply under normal use conditions for all three variants.