Mercedes-Benz SL-Class, R232 (USA / CAN)

Automatic transmission fluid capacity & service interval

Mercedes-Benz SL-Class, R232 (USA / CAN) requires automatic transmission fluid with a capacity of 10-11 liters. Service intervals occur every 37500 miles or 36 months. The data covers 4 configurations.

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

TypeSpecifications
SL 63 AMG S E Performance 4MATIC+, 232.482 (2023- )
  • Use: Normal
  • Capacity 10-11 liter
  • Change 37500 miles/ 36 months
  • Code: 725.163 9/1
SL 43 AMG, 232.450 (2022- )
  • Use: Normal
  • Capacity 10-11 liter
  • Change 37500 miles/ 36 months
  • Code: 725.103 9/1
SL 55 AMG 4MATIC+, 232.480 (2021- )
  • Use: Normal
  • Capacity 10-11 liter
  • Change 37500 miles/ 36 months
  • Code: 725.099 9/1
SL 63 AMG 4MATIC+, 232.481 (2021- )
  • Use: Normal
  • Capacity 10-11 liter
  • Change 37500 miles/ 36 months
  • Code: 725.099 9/1

Additional Notes

  • All four variants of the Mercedes-Benz SL-Class R232 share an identical automatic transmission fluid capacity range of 10-11 liters, indicating a consistent gearbox architecture across the lineup despite differences in engine displacement and powertrain configuration.
  • A capacity expressed as a range rather than a fixed value typically reflects the difference between a partial service fill and a full overhaul fill, where the lower figure represents a drain-and-refill service and the upper figure accounts for a complete transmission rebuild with torque converter emptied.
  • The SL 55 AMG 4MATIC+ (232.480) and SL 63 AMG 4MATIC+ (232.481) both carry a starting year of 2021, making them the earliest R232 variants in the specifications, while the SL 43 AMG (232.450) entered with a 2022 start year and the SL 63 AMG S E Performance 4MATIC+ (232.482) followed with a 2023 start year.
  • The change interval for all listed variants is 37,500 miles or 36 months under normal use conditions, meaning the mileage or time limit, whichever is reached first, triggers a fluid change.
  • A 36-month time-based interval alongside the mileage threshold reflects that fluid degradation occurs through oxidation and moisture absorption over time, independent of how many miles have accumulated.
  • The SL 63 AMG S E Performance 4MATIC+ (232.482) is a plug-in hybrid performance variant, yet the specifications assign the same 10-11 liter capacity and 37,500-mile/36-month interval as the conventionally powered AMG models in the R232 range.

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