BYD F3

Additional Notes

• The BYD F3 and F3R equipped with 1.5-liter engines (QCJ7150 A/A1, QCJ7151 A/A1, QCJ7361 A) from 2005-2014 and the 1.6-liter variants (QCJ7160 A/A1/A2, QCJ7161 A) from 2005-2015 share an identical cooling system capacity of 6.8 liters, indicating a common cooling architecture across both displacements in that generation.
• The 6.8-liter capacity figure for the 1.5 and 1.6 QCJ-series engines applies to the full cooling system fill, which typically includes the radiator, engine block passages, heater core, and expansion reservoir combined.
• Under normal use conditions, the QCJ-series 1.5 and 1.6 cooling systems call for a coolant check at 10,000 km or every 6 months, whichever comes first, with a full change interval of 20,000 km or 12 months.
• An initial service check at 3,000 km is specified for the QCJ-series 1.5 and 1.6 engines, a shorter early interval used to verify system integrity and coolant level after the first period of thermal cycling on a new or freshly serviced vehicle.
• The F3 1.5 producing 113 kW, covering model years 2014-2021, carries a notably larger cooling system capacity of 8.5 liters compared to the earlier QCJ-series 1.5 at 6.8 liters, reflecting a more substantial cooling circuit in the higher-output engine variant.
• For the F3 1.5 (113 kW), the initial service coolant change is set at 30 months, while the subsequent normal-use interval extends to 36 months. Both intervals are expressed purely in time rather than distance, which is characteristic of long-life coolant formulations where degradation is primarily time-dependent.
• The F3 1.5 from 2009-2012 has a cooling system capacity of 6.2 liters, the smallest among all F3 configurations listed, with a normal-use change interval of 40,000 km or 24 months.
• The F3 1.6 from 2005-2010 shares the 6.8-liter capacity with the QCJ-series variants but follows a longer change interval of 40,000 km or 24 months under normal use, compared to the 20,000 km or 12-month interval specified for the QCJ-series 1.6 covering 2005-2015.
• The F3DM 1.0 hybrid from 2008-2013 carries the largest cooling system capacity in the F3 range at 8.9 liters. The expanded volume reflects the additional thermal management demands of a dual-mode powertrain, which requires cooling for both the combustion engine and the electric drive components.
• The F3DM 1.0 follows the same check and initial service schedule as the QCJ-series engines, with a 10,000 km or 6-month check interval and a 3,000 km initial service check, but the full coolant change is extended to 40,000 km or 24 months under normal use conditions.