BMW 4 series Gran Coupé, F36 (EU)

Brake fluid capacity & service interval

BMW 4 series Gran Coupé, F36 (EU) uses brake fluid with a capacity range between min and max. Service intervals include a change at 24 months and a change at 36 months. The data covers 2 configurations.

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

TypeSpecifications
  • 425d Gran Coupé (155 kW) (2016-2018)
  • DSC
  • Use: Normal
  • Between min and max.
  • Change 24 months
  • 425d Gran Coupé (155 kW) (2016-2018)
  • DSC
  • Use: First change only
  • Between min and max.
  • Change 36 months

Additional Notes

  • The BMW 4 Series Gran Coupé F36 (EU) 425d (155 kW) brake fluid specification lists no fixed volume figure, calling instead for a fill level between the minimum and maximum marks on the reservoir. A fill-to-marks instruction of this kind is standard practice for brake fluid top-up and routine service, where the system remains sealed and only a partial fluid exchange or level correction is performed rather than a full drain.
  • Under normal use conditions, the 425d Gran Coupé (155 kW) carries a brake fluid change interval of 24 months. Brake fluid is hygroscopic, meaning it absorbs moisture from the atmosphere over time, which lowers its boiling point and can compromise braking performance, so time-based intervals are used regardless of mileage.
  • A separate first-change-only entry for the same 425d Gran Coupé (155 kW) specifies a 36-month interval. A first-change-only designation applies exclusively to the initial fluid replacement after the vehicle leaves the factory, reflecting that freshly filled brake fluid from production may tolerate a longer service window before the first scheduled change is due.
  • After the first-change-only interval has elapsed, the 425d Gran Coupé (155 kW) reverts to the standard 24-month normal-use cycle for all subsequent brake fluid changes. The two intervals therefore apply sequentially rather than as alternatives to one another.
  • Both entries cover the hydraulic brake and clutch system together with the DSC (Dynamic Stability Control) circuit. DSC systems share brake fluid with the primary hydraulic circuit, so a single fluid specification and change schedule governs both functions on the 425d Gran Coupé (155 kW).

Other Systems