Mercedes-Benz SLC-Class, R172 (USA / CAN)

Power steering fluid capacity & service interval

Mercedes-Benz SLC-Class, R172 (USA / CAN) requires power steering fluid with a capacity of 1 liter. The data covers 2 configurations.

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

TypeSpecifications
SLC 300, 172.438 (2016-2020)
  • Use: Normal
  • Capacity 1 liter
SLC 43 AMG, 172.466 (2016-2020)
  • Use: Normal
  • Capacity 1 liter

Additional Notes

  • Both the SLC 300 (172.438) and SLC 43 AMG (172.466) share an identical power steering fluid capacity of 1 liter, covering model years 2016-2020 for each variant.
  • A 1-liter capacity is characteristic of a compact, sealed power steering reservoir typical of modern passenger vehicles, where the system holds a relatively small fluid volume compared to larger trucks or SUVs.
  • The capacity figure of 1 liter applies under normal use conditions for both configurations, meaning the specification reflects standard operating fills rather than a post-overhaul or dry-system refill scenario.
  • Despite the mechanical differences between the turbocharged inline-four in the SLC 300 and the twin-turbocharged V6 in the Mercedes-Benz SLC 43 AMG, the power steering fluid capacity remains uniform at 1 liter across both engine variants.

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