Mercedes-Benz CLS-Class, C257 (USA / CAN)

Automatic transmission fluid capacity & service interval

Mercedes-Benz CLS-Class, C257 (USA / CAN) requires automatic transmission fluid with a capacity range of 10-11 liters for dry fill. The service interval for fluid change is 77500 miles. The data covers 4 configurations.

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

TypeSpecifications
CLS 450, 257.358 (2018-2022)
  • Use: Normal
  • Capacity 10 liter (Dry fill)
  • Change 77500 miles
  • Code: 725.015 9/1
CLS 450 4MATIC, 257.359 (2018-2023)
  • Use: Normal
  • Filter capacity 10-11 liter (Dry fill)
  • Change 77500 miles
  • Code: 725.045 9/1
CLS 53 AMG 4MATIC+, 257.361 (2018-2022)
  • Use: Normal
  • Capacity 10 liter (Dry fill)
  • Change 77500 miles
  • Code: 725.045 9/1
CLS 53 AMG 4MATIC+, 257.361 (2018-2022)
  • Use: Normal
  • Capacity 10 liter (Dry fill)
  • Change 77500 miles
  • Code: 725.048 9/1

Additional Notes

  • The CLS 450 4MATIC (257.359) carries a filter capacity range of 10-11 liters on a dry fill, meaning the figure accounts for fluid needed to prime a completely empty transmission and filter assembly from scratch, rather than a routine drain-and-refill quantity.
  • A dry fill capacity expressed as a range, as seen on the Mercedes-Benz CLS 450 4MATIC, typically reflects variation introduced by the filter and valve body holding slightly different volumes depending on assembly state or fluid drainage completeness.
  • The CLS 450 rear-wheel-drive variant (257.358) lists a fixed 10-liter dry fill capacity for 2018-2022, compared to the 4MATIC version's 10-11 liter range, indicating the all-wheel-drive drivetrain configuration influences total fluid volume at a full overhaul fill.
  • The CLS 53 AMG 4MATIC+ (257.361) shares the same 10-liter dry fill capacity as the rear-wheel-drive CLS 450, despite the performance-oriented AMG powertrain and all-wheel-drive system, suggesting the transmission unit itself holds a consistent fluid volume across those variants.
  • All three variants across the 2018-2022 and 2018-2023 model year spans share a uniform service interval of 77,500 miles under normal use conditions, meaning standard driving patterns without the elevated thermal or load stress that would otherwise trigger a shortened change interval.
  • The 77,500-mile change interval applies specifically to normal use conditions across all listed configurations, and no separate severe-use interval appears in the specifications for any of these variants.

Other Systems