Audi 80, 80/82 (B1) (EU)
Brake fluid capacity & service interval
Audi 80, 80/82 (B1) (EU) uses brake fluid with a capacity range between min and max. The service interval is 24 months. The data covers 7 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 80 1.5 (55 kW), 82 (1976-1978) |
|
| 80 1.6 (63 kW), 82 (1976-1978) |
|
| 80 GTE (1975-1978) |
|
| 80 GT (1973-1975) |
|
| 80 1.3 (44 kW) (1972-1978) |
|
| 80 1.5 (55 kW) (1972-1976) |
|
| 80 1.5 (63 kW) (1972-1976) |
|
Additional Notes
- Across all Audi 80/82 (B1) configurations spanning 1972-1978, the brake fluid fill level is specified as between the minimum and maximum marks on the reservoir, rather than as a fixed volume. This range-based specification reflects the nature of hydraulic brake systems, where fluid level naturally drops slightly as brake pads wear and the caliper pistons extend further.
- The 24-month change interval applies uniformly across every listed configuration under normal use conditions, from the 1.3 (44 kW) through to the GTE. Brake fluid is hygroscopic, meaning it absorbs moisture from the atmosphere over time, which lowers its boiling point and can compromise hydraulic performance. A time-based interval rather than a mileage-based one accounts for this degradation mechanism.
- The B1 platform covers two distinct body designations, the 80 and the 82, with the 82 appearing in the 1.5 (55 kW) and 1.6 (63 kW) variants from 1976-1978. Both share the same brake fluid fill specification and 24-month change interval, indicating no differentiation in brake system servicing requirements between the two body types.
- The 80 GT was produced during 1973-1975, while the 80 GTE ran from 1975-1978. Despite representing higher-performance trim levels relative to the base 1.3 and 1.5 variants, both carry the same brake fluid service specification, with no variation in fill level guidance or change interval.
- The 1.5 (55 kW) engine appeared in two separate production windows across different body variants: the 80 from 1972-1976 and the 80/82 from 1976-1978. Both share identical brake fluid specifications, reflecting a consistent hydraulic system design across the model's production run.