Mercedes-Benz EQB-Class, X243 (USA / CAN)

Coolant capacity & service interval

Mercedes-Benz EQB-Class, X243 (USA / CAN) uses coolant with a capacity of 16,7 liters. The service interval is 124000 miles or 120 months. The data covers 3 configurations.

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

TypeSpecifications
EQB 250+, 243.601 (2022- )
  • Use: Normal
  • Capacity 16,7 liter
  • Change 124000 miles/ 120 months
EQB 300 4MATIC, 243.608 (2022- )
  • Use: Normal
  • Capacity 16,7 liter
  • Change 124000 miles/ 120 months
EQB 350 4MATIC, 243.612 (2022- )
  • Use: Normal
  • Capacity 16,7 liter
  • Change 124000 miles/ 120 months

Additional Notes

  • The Mercedes-Benz EQB-Class X243 cooling system holds 16.7 liters across all three available configurations: the EQB 250+, EQB 300 4MATIC, and EQB 350 4MATIC.
  • A 16.7-liter cooling system capacity is notably large relative to many conventional passenger vehicles, reflecting the thermal management demands of an all-electric drivetrain, which relies on liquid cooling for battery packs, power electronics, and electric motors rather than an internal combustion engine.
  • The coolant change interval is set at 124,000 miles or 120 months under normal use conditions, meaning a single service fill is expected to last up to a decade before replacement is due.
  • 120 months equals 10 years, placing the EQB-Class coolant service interval among the longer schedules seen in modern passenger vehicles and consistent with extended-life coolant formulations designed for low-maintenance ownership cycles.
  • The capacity and interval figures are identical across the EQB 250+ (243.601), EQB 300 4MATIC (243.608), and EQB 350 4MATIC (243.612), indicating no variation in cooling system specifications between the rear-wheel-drive and all-wheel-drive variants within the 2022 model year.

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