Mercedes-Benz CLS-Class, C218 / X218 (USA / CAN)

Transfer case fluid capacity & service interval

Mercedes-Benz CLS-Class, C218 / X218 (USA / CAN) requires transfer case fluid with a capacity of 0,65 to 0,68 liters. The service interval is 60000 miles. The data covers 1 configuration.

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

TypeSpecifications
CLS 550 4MATIC BlueEFFICIENCY, 218.391/991 (2012-2018)
  • Use: Normal
  • Capacity 0,65-0,68 liter
  • Change 60000 miles

Additional Notes

  • The transfer case fluid capacity for the CLS 550 4MATIC BlueEFFICIENCY (218.391/991) falls within a narrow band of 0.65 to 0.68 liter, reflecting the relatively compact design of the transfer box unit in this application.
  • A capacity expressed as a range rather than a fixed value typically accounts for minor variation in drain completeness and refill conditions, meaning the actual accepted fill may settle anywhere within those 0.03 liter bounds.
  • The specified change interval for the Mercedes-Benz CLS 550 4MATIC BlueEFFICIENCY transfer case fluid is 60,000 miles, applied under normal use conditions.
  • The normal use condition tied to the 60,000-mile interval distinguishes standard operating circumstances from more demanding driving patterns, which would fall under a separate severe-use classification not present in the specifications for this system.
  • The note identifying the unit as a "transferbox" confirms the capacity and interval figures apply specifically to the transfer case assembly rather than any associated axle or transmission fluid circuit.
  • Coverage of the 218.391 and 218.991 chassis designations within a single row indicates both the coupe (C218) and shooting brake (X218) body variants equipped with the 4MATIC drivetrain share identical transfer case fluid specifications across the 2012-2018 model years.

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