Mercedes-Benz G-Class, W463B (USA / CAN)

Automatic transmission fluid capacity & service interval

Mercedes-Benz G-Class, W463B (USA / CAN) requires automatic transmission fluid with a capacity of 10-11 liters. The service interval for fluid replacement is 74500 miles. The data covers 2 configurations.

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

TypeSpecifications
G 550, 463.261 (2019-2024)
  • Use: Normal
  • Capacity 10-11 liter (Dry fill)
  • Change 74500 miles
  • Code: 725.0xx 9/1
G 63 AMG, 463.277 (2019-2024)
  • Use: Normal
  • Capacity 10-11 liter (Dry fill)
  • Change 74500 miles
  • Code: 725.0xx 9/1

Additional Notes

  • Both the G 550 (463.261) and G 63 AMG (463.277) share an identical dry fill capacity range of 10 to 11 liters, covering model years 2019-2024.
  • A dry fill figure represents the total fluid volume required when filling a completely drained or rebuilt transmission, as opposed to a partial drain-and-fill service, which typically displaces far less fluid.
  • The 1-liter spread between the lower and upper capacity values reflects normal variation introduced by residual fluid retained in the torque converter and valve body during a service procedure.
  • The Mercedes-Benz G-Class, W463B carries a transmission fluid change interval of 74,500 miles under normal use conditions for both the G 550 and G 63 AMG configurations.
  • Normal use conditions, as referenced in the G 550 and G 63 AMG rows, indicate the 74,500-mile interval applies to standard driving patterns rather than elevated-stress operation.
  • The capacity and change interval specifications are identical across the G 550 and G 63 AMG despite the two variants using different engine configurations, suggesting the same automatic transmission unit is shared between both models in the 2019-2024 period.

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