Audi A3, S3, RS 3, 8V (EU)

Brake fluid capacity & service interval

Audi A3, S3, RS 3, 8V (EU) models require 4,7 liters of brake fluid. The service interval for fluid replacement is 24 months. The data covers 1 configuration.

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

TypeSpecifications
A3 30 TDI (2018-2020)
  • Use: Normal
  • Capacity 4,7 liter
  • Change 24 months

Additional Notes

  • The Audi A3 30 TDI (2018-2020) carries a brake fluid capacity of 4.7 liters, which reflects the total volume of the hydraulic brake and clutch system combined rather than the brake circuit alone.
  • A 24-month change interval applies to the A3 30 TDI (2018-2020) under normal use conditions, meaning the fluid is replaced on a fixed time-based schedule regardless of mileage accumulated.
  • Brake fluid is hygroscopic, meaning it absorbs moisture from the atmosphere over time, which is why a calendar-based interval of 24 months is a standard approach to maintaining hydraulic system integrity.
  • The 4.7-liter figure for the A3 30 TDI (2018-2020) represents a shared hydraulic circuit, as the brake and clutch systems on manual-transmission variants commonly draw from the same fluid reservoir.

Other Systems