Audi A3, S3, RS 3, 8YS (USA)
Brake fluid capacity & service interval
Audi A3, S3, RS 3, 8YS (USA) models require 1 liter of brake fluid. The service interval for fluid replacement is 24 months. The data covers 4 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| RS 3 2.5 TFSI quattro (299 kW) (2022- ) |
|
| A3 40 TFSI 150 kW) (2021- ) |
|
| A3 40 TFSI quattro (150 kW) (2021- ) |
|
| S3 2.0 TFSI quattro (228 kW) (2021- ) |
|
Additional Notes
- Across all four configurations in the Audi A3, S3, RS 3 8YS (USA) lineup, the brake system capacity is rated at 1 liter, which is a typical figure for a passenger car brake fluid reservoir and associated circuit volume.
- The A3 40 TFSI (150 kW) front-wheel-drive and quattro all-wheel-drive variants share an identical 1-liter brake system capacity, indicating no measurable difference in fluid volume between the two drivetrain configurations.
- The S3 2.0 TFSI quattro (228 kW) and the RS 3 2.5 TFSI quattro (299 kW) also carry the same 1-liter brake system capacity despite their higher power outputs relative to the A3 variants, reflecting a consistent hydraulic circuit volume across the range.
- All four configurations specify a 24-month change interval under normal use conditions, meaning brake fluid replacement is tied to a calendar-based schedule rather than a mileage threshold.
- The 24-month interval is a widely recognized standard for brake fluid maintenance, as brake fluid is hygroscopic and absorbs moisture over time, which lowers its boiling point regardless of how many miles have been driven.
- The RS 3 2.5 TFSI quattro (299 kW) carries a starting year of 2022, while the A3 40 TFSI, A3 40 TFSI quattro, and S3 2.0 TFSI quattro all share a starting year of 2021, placing the RS 3 as the latest introduction among the listed configurations.