Smart fortwo, 453

Coolant capacity & service interval

Smart fortwo 453 coolant capacity ranges from 5,9 to 10,5 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
fortwo EQ, 453.391/491 (2017-2024)
  • Use: Normal
  • Capacity 5,9 liter
  • Change 60000 km/ 72 months
fortwo Brabus [80 KW], 453.462/362 (2016-2019)
  • Use: Normal
  • Capacity 10,5 liter
  • Change 60000 km/ 72 months
fortwo (45 kW), 453.341 (2014-2019)
  • Use: Normal
  • Capacity 6,9 liter
  • Change 60000 km/ 72 months
fortwo (52 kW), 453.342/343/442/443 (2014-2019)
  • Use: Normal
  • Capacity 6,9 liter
  • Change 60000 km/ 72 months
fortwo (66 kW), 453.344/444/453 (2014-2019)
  • Use: Normal
  • Capacity 10,5 liter
  • Change 60000 km/ 72 months

Additional Notes

  • The Smart fortwo 453 coolant service interval is consistent across all listed configurations at 60,000 km or 72 months under normal use conditions, whichever comes first.
  • The 45 kW variant (453.341) and the 52 kW variants (453.342/343/442/443) share an identical cooling system capacity of 6.9 liters for the 2014-2019 period, indicating a common cooling circuit architecture between those two power outputs.
  • The 66 kW variants (453.344/444/453) carry a notably larger cooling system capacity of 10.5 liters compared to the lower-output petrol variants, a difference of 3.6 liters that reflects the greater thermal load generated by the higher-output engine.
  • The fortwo Brabus 80 kW (453.462/362), available from 2016-2019, shares the 10.5-liter cooling system capacity with the 66 kW variants, suggesting both high-output configurations rely on the same expanded cooling circuit.
  • The Smart fortwo EQ (453.391/491) has the smallest cooling system capacity among all listed configurations at 5.9 liters. Electric drivetrains typically require less coolant volume than internal combustion engines, as thermal management needs differ significantly between the two powertrain types.
  • Despite the EQ's reduced capacity of 5.9 liters, the 60,000 km or 72-month service interval under normal use conditions remains identical to all petrol variants in the 453 lineup.
  • The 3.6-liter capacity gap between the lower petrol variants at 6.9 liters and the higher-output petrol variants at 10.5 liters is the most significant capacity variation within the 453 petrol range, and a full cooling system service on the latter requires proportionally more fluid to complete.

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