Smart forfour, 453
Automatic transmission fluid capacity & service interval
The Smart forfour, 453 uses automatic transmission fluid with a capacity of 1.7 liters. Four configurations are covered in the data.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
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Additional Notes
- The Smart forfour 453 automatic transmission fluid capacity is 1.7 liters across all listed variants, from the base 45 kW engine to the Brabus 80 kW unit.
- A 1.7-liter fill is consistent with a transaxle-mounted dual-clutch transmission (DCT), where the fluid serves both the gear set and the clutch packs within a single compact housing.
- All four variants specify a semi-automatic DCT transaxle configuration, meaning the fluid capacity figure reflects a combined gearbox and differential fill rather than a standalone transmission sump.
- The 45 kW (453.041), 52 kW (453.042/043), and 66 kW (453.044/053) variants share the same 1.7-liter capacity across the 2014-2019 model years, indicating a common transmission unit regardless of power output differences within that engine range.
- The forfour Brabus (80 kW), variant 453.062, introduced from 2016, also carries the 1.7-liter transaxle capacity, placing the highest-output variant on the same fluid volume as the lower-powered configurations.
- All listed capacity figures apply under normal use conditions, meaning the 1.7-liter specification is not adjusted for severe-duty or extended-service scenarios in the data provided.