BMW 4 series Convertible, F33 / F83 (EU)
Brake fluid capacity & service interval
BMW 4 series Convertible, F33 / F83 (EU) requires brake fluid with a capacity range between min and max. Service intervals include 24 months and 36 months. The data covers 5 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
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Additional Notes
- The brake fluid fill level for all 425d Convertible variants is specified as between the minimum and maximum marks on the reservoir, rather than as a fixed volume. A fill-to-range specification of this kind is standard for brake fluid service, where the reservoir level is topped or replaced without measuring a precise quantity.
- The BMW 4 Series Convertible F33 425d Convertible (155 kW), covering 2016-2018, carries a 24-month change interval under normal use conditions for the hydraulic brake/clutch system with DSC.
- The 425d Convertible (160 kW) from 2014-2016 specifies a 24-month change interval under normal use conditions, applying to the hydraulic brake/clutch system and DSC.
- A separate first change only condition is listed for the 425d Convertible (160 kW) from 2014-2016, extending the initial service interval to 36 months. After the first change, the standard 24-month normal interval applies.
- The 425d Convertible (165 kW) from 2016-2018 mirrors the dual-interval structure of the 160 kW variant, with a 24-month interval under normal use and a 36-month interval designated for the first change only.
- The 36-month first change only interval, present for both the 160 kW and 165 kW variants, reflects a factory-fill brake fluid that is considered acceptable for a longer initial period before the standard 24-month cycle begins.
- The 155 kW variant from 2016-2018 does not carry a first change only entry, meaning a single 24-month normal interval applies without a distinct extended initial period as seen in the other two power outputs.