Honda Civic IX, FB/FG/FK (USA / CAN)

Automatic transmission fluid capacity & service interval

Honda Civic IX, FB/FG/FK (USA / CAN) uses automatic transmission fluid with a capacity range of 2,4 to 5,9 liters. Service intervals follow a flexible on board maintenance system. The data covers 2 configurations.

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

TypeSpecifications
Civic 1.8, FB (2011-2014)
  • Use: Flexible (on board maintenance system)
  • Capacity 5,75 liter (Initial fill)
  • Capacity 2,4 liter (Service fill)
  • Code: 5/1
Civic GX 1.8 CNG (2011-2015)
  • Use: Flexible (on board maintenance system)
  • Capacity 5,9 liter (Initial fill)
  • Capacity 2,4 liter (Service fill)
  • Code: 5/1

Additional Notes

  • The Honda Civic IX FB/FG/FK automatic transaxle service fill capacity of 2.4 liters applies across both the 1.8 FB and the GX 1.8 CNG configurations, representing only the fluid exchanged during a routine drain-and-fill rather than a full system overhaul.
  • The initial fill capacity reflects the total fluid volume held by the transaxle assembly, including the torque converter and internal passages, which is why the figure is substantially higher than the service fill amount.
  • The 1.8 FB carries an initial fill capacity of 5.75 liters, while the GX 1.8 CNG variant holds 5.9 liters, a difference of 0.15 liters that points to a slight variation in transaxle volume between the two engine configurations.
  • Both configurations follow a flexible service interval governed by the on-board maintenance system, meaning fluid change intervals are not fixed at a set mileage or time period but are instead calculated by the vehicle's monitoring system based on operating conditions.

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