Mercedes-Benz GLB-Class, X247 (USA / CAN)

Additional Notes

• The Mercedes-Benz GLB-Class X247 cooling system holds 10 liters of coolant across the GLB 250 (247.646) and GLB 250 4MATIC (247.647) configurations, covering both the 2019-2023 and 2023 onward production variants.
• A 10-liter cooling system capacity is a relatively large fill volume for a compact crossover, which is consistent with a full system service that includes the radiator, reservoir, heater core, and engine block passages rather than a partial drain-and-fill.
• The GLB 35 AMG 4MATIC (247.651) carries a capacity range of 8.2-10 liters rather than a fixed value, indicating that the actual fill volume can vary depending on how completely the system is drained during service.
• All five configurations share the same change interval of 124,000 miles or 120 months under normal use conditions, placing coolant service on a long-life schedule rather than a routine annual or mileage-based cycle.
• A 120-month interval equals 10 years, meaning the time-based limit and the mileage-based limit are intended to be evaluated together, with whichever threshold is reached first determining when service is due.
• The GLB 35 AMG 4MATIC (247.651) is the only configuration in the X247 lineup where the cooling system capacity is expressed as a range, while the GLB 250 and GLB 250 4MATIC variants each carry a fixed 10-liter specification.
• The 124,000-mile service interval applies under normal use conditions, which in coolant service contexts typically refers to standard driving without sustained extreme temperatures, heavy towing, or other factors that accelerate coolant degradation.