Smart forfour, 453

Coolant capacity & service interval

Smart forfour 453 coolant capacity ranges from 6,1 to 10,9 liters. Service intervals occur every 60000 km or 72 months. The data covers 5 configurations.

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

TypeSpecifications
forfour EQ, 453.091 (2017-2023)
  • Use: Normal
  • Capacity 6,1 liter
  • Change 60000 km/ 72 months
forfour Brabus (80 kW), 453.062 (2016-2019)
  • Use: Normal
  • Capacity 10,9 liter
  • Change 60000 km/ 72 months
forfour (45 kW), 453.041 (2014-2019)
  • Use: Normal
  • Capacity 7,2 liter
  • Change 60000 km/ 72 months
forfour (52 kW), 453.042/043 (2014-2019)
  • Use: Normal
  • Capacity 7,2 liter
  • Change 60000 km/ 72 months
forfour (66 kW), 453.044/053 (2014-2019)
  • Use: Normal
  • Capacity 10,9 liter
  • Change 60000 km/ 72 months

Additional Notes

  • The Smart forfour 453 cooling system capacity varies by engine output, with the 45 kW (453.041) and 52 kW (453.042/043) variants both holding 7.2 liters, while the 66 kW (453.044/053) and the Brabus 80 kW (453.062) require 10.9 liters.
  • The 10.9-liter figure on the 66 kW and Brabus 80 kW variants represents a notably larger cooling circuit, consistent with the higher thermal load produced by more powerful engine outputs.
  • The forfour EQ (453.091) carries a 6.1-liter coolant capacity, the smallest among all listed configurations, which reflects the different thermal management architecture of an electric drivetrain compared to combustion-engined variants.
  • All five configurations share an identical service interval of 60,000 km or 72 months under normal use conditions, meaning the change schedule is uniform regardless of engine type or power output.
  • The 72-month ceiling on the service interval means coolant replacement is due after six years even if the mileage threshold has not been reached, a time-based limit that accounts for the gradual degradation of coolant additives over time.
  • The Brabus 80 kW variant (453.062) matches the 66 kW model exactly in both coolant capacity and service interval, indicating a shared cooling system architecture between those two higher-output configurations.
  • The 45 kW and 52 kW variants share the same 7.2-liter capacity despite differing in power output, suggesting a common cooling circuit design across the lower-output engine family within the 453 generation.

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