Hyundai KONA EV, OS EV (EU)

Brake fluid capacity & service interval

Hyundai KONA EV, OS EV (EU) models require brake fluid with a capacity of 0,7 to 0,8 liters. Service intervals consist of checks every 15000 km or 12 months and changes every 30000 km or 24 months. The data covers 2 configurations.

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

TypeSpecifications
KONA EV 64 kWh (2019-2023)
  • Use: Normal
  • Between min and max.
  • Check 15000 km/ 12 months
  • Change 30000 km/ 24 months
KONA EV 64 kWh (2018-2019)
  • Use: Normal
  • Capacity 0,7-0,8 liter

Additional Notes

  • The Hyundai KONA EV 64 kWh (2018-2019) brake fluid capacity for the hydraulic brake system falls within a 0.7-0.8 liter range, which is a relatively modest volume consistent with a passenger car brake circuit rather than a larger commercial or performance application.
  • The 0.7-0.8 liter range for the 2018-2019 configuration represents a service fill specification, meaning the figure reflects the amount of fluid the hydraulic brake system holds during normal operation rather than a full overhaul or flush quantity.
  • For the 2019-2023 configuration, the reservoir level is defined by a min-to-max band rather than a fixed volume, which is a standard reservoir-based measurement method where the fluid level is verified visually against markings on the reservoir body.
  • The 2019-2023 specification separates inspection and replacement into two distinct intervals: a check at every 15,000 km or 12 months, and a full fluid change at every 30,000 km or 24 months, both under normal use conditions.
  • The 30,000 km or 24-month change interval for the 2019-2023 KONA EV 64 kWh reflects a standard brake fluid replacement cycle, driven by the hygroscopic nature of brake fluid, which absorbs moisture over time and lowers the boiling point of the fluid regardless of mileage accumulation.
  • Both the 2018-2019 and 2019-2023 rows are designated under normal use conditions, meaning the intervals and capacity figures apply to standard operating environments rather than severe-duty cycles such as frequent towing or extreme temperature exposure.

Other Systems