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

Brake fluid capacity & service interval

Audi A3, S3, RS 3, 8V (USA) models require 1 liter of brake fluid. Service intervals include a 10000 miles or 12 months check and a 24 months change. The data covers 10 configurations.

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

TypeSpecifications
A3 40 TFSI (137 kW) (2018-2020)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 24 months
A3 45 TFSI quatro (170 kW) (2018-2020)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 24 months
RS 3 2.5 TFSI quattro (294 kW) (2018-2020)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 24 months
S3 2.0 TFSI quattro (215 kW) (2018-2020)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 24 months
RS 3 2.5 TFSI quattro (294 kW) (2017-2018)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 24 months
A3 2.0 TFSI (137 kW) (2016-2018)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 24 months
A3 1.4 TFSI e-tron (2015-2018)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 24 months
A3 1.8 TFSI quattro (125 kW) (2014-2016)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 24 months
A3 2.0 TFSI quattro (162 kW) (2014-2018)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 24 months
S3 2.0 TFSI quattro (215 kW) (2014-2018)
  • Use: Normal
  • Capacity 1 liter
  • Check 10000 miles/ 12 months
  • Change 24 months

Additional Notes

  • Every configuration listed across the Audi A3, S3, and RS 3 8V range for the 2014-2020 period carries a uniform brake fluid capacity of 1 liter. In brake system servicing, a capacity figure at this scale reflects the total volume of the hydraulic circuit rather than a top-up quantity, meaning the value represents a full system fill.
  • The check interval across all listed configurations is set at 10,000 miles or 12 months, whichever comes first. Brake fluid check intervals are typically time- and mileage-based because the fluid's primary concern is moisture absorption over time, not mechanical wear alone.
  • The change interval for all configurations is 24 months, independent of mileage. A time-based change interval for brake fluid reflects the hygroscopic nature of glycol-based fluids, which absorb moisture from the atmosphere and lower the fluid's boiling point regardless of how many miles the vehicle has covered.
  • All specifications are designated under normal use conditions. In brake fluid service contexts, normal use typically refers to standard road driving without sustained high-load braking events such as track use, which can accelerate fluid degradation beyond what a time-based interval accounts for.
  • The A3 1.4 TFSI e-tron (2015-2018) is a plug-in hybrid variant, yet the brake fluid capacity and service intervals are identical to those of the conventional combustion-engine configurations. The hydraulic brake system note used for the e-tron mirrors the same terminology applied to the RS 3 2.5 TFSI quattro (2018-2020), distinguishing those two entries from the simpler "brake system" label used across the remaining configurations.
  • The RS 3 2.5 TFSI quattro appears across two separate year ranges: 2017-2018 and 2018-2020. Both share the same output rating of 294 kW, and both carry identical capacity and interval figures, though the later entry uses the "hydraulic brake system" note rather than the plain "brake system" designation of the earlier entry.
  • The S3 2.0 TFSI quattro (215 kW) is also split across two entries covering 2014-2018 and 2018-2020. The capacity, check interval, and change interval remain unchanged between the two entries, indicating no revision to brake fluid service requirements across that production span.
  • Power outputs across the listed configurations range from 125 kW for the A3 1.8 TFSI quattro up to 294 kW for the RS 3 2.5 TFSI quattro, yet the 1-liter capacity and 24-month change interval apply uniformly regardless of engine output. Brake fluid volume is determined by circuit architecture rather than engine performance level.

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