Mercedes-Benz T-Class, W420 (EU)
Coolant capacity & service interval
Mercedes-Benz T-Class, W420 (EU) requires coolant with a capacity range of 7,2 to 10 liters. The service interval is 150000 km or 48 months. The data covers 4 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| T 160, 420.853 (2021- ) |
|
| T 160 d, 420.823 (2021- ) |
|
| T 180, 420.863 (2021- ) |
|
| T 180 d, 420.833 (2021- ) |
|
Additional Notes
- The Mercedes-Benz T-Class W420 (EU) diesel variants, the T 160 d (420.823) and T 180 d (420.833), each carry a cooling system capacity of 10 liters, which is a notably larger fill volume compared to their petrol counterparts.
- The petrol variants, the T 160 (420.853) and T 180 (420.863), share a cooling system capacity of 7.2 liters, reflecting the generally smaller cooling circuit typical of petrol engines in this segment.
- The 2.8-liter difference in coolant capacity between the diesel and petrol variants points to a more extensive cooling circuit in the diesel engines, consistent with the higher thermal loads diesel combustion generates.
- All four variants share an identical service interval of 150,000 km or 48 months under normal use conditions, meaning the change schedule is uniform across both engine types despite the difference in system capacity.
- The 48-month time limit on coolant changes means a vehicle covering low annual mileage would reach the service threshold on time rather than distance, regardless of whether the engine is diesel or petrol.
- The capacity figures listed represent the full cooling system fill, which typically accounts for the engine block, cylinder head passages, radiator, heater core, and expansion reservoir combined, rather than a partial drain-and-refill volume.