BYD Seal U

Brake fluid capacity & service interval

BYD Seal U brake fluid capacity ranges from 1 to 1,15 liters. Service intervals include checks at 20000 km or 12 months and changes at 40000 km or 24 months. The data covers 3 configurations.

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

TypeSpecifications
Seal U (2024- )
  • Use: Normal
  • Capacity 1,15 liter
  • Check 20000 km/ 12 months
  • Change 40000 km/ 24 months
Seal U DM-i 2WD (2024- )
  • Use: Normal
  • Capacity 1 liter
  • Check 20000 km/ 12 months
  • Change 40000 km/ 24 months
Seal U DM-i AWD (2024- )
  • Use: Normal
  • Capacity 1 liter
  • Check 20000 km/ 12 months
  • Change 40000 km/ 24 months

Additional Notes

  • The BYD Seal U hydraulic brake system holds 1.15 liters of brake fluid, which is a slightly larger reservoir capacity compared to the DM-i variants.
  • Both the Seal U DM-i 2WD and DM-i AWD share an identical brake fluid capacity of 1 liter, with no difference between the two drivetrain configurations in brake system fill volume.
  • Across all three configurations, the brake fluid check interval is set at 20,000 km or 12 months under normal use conditions, whichever comes first.
  • The brake fluid change interval is consistent across all configurations at 40,000 km or 24 months under normal use conditions, meaning the fluid is replaced at twice the distance and time of the inspection interval.
  • A 40,000 km or 24-month change interval for brake fluid reflects a time-and-distance-based replacement schedule, which accounts for the hygroscopic nature of brake fluid — a property that causes gradual moisture absorption over time regardless of mileage.

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