The D2A engine is actually an upgraded product of 4JB 1. 4JB 1 diesel engine's maximum torque 172 Nm, maximum power 57 kW, and its displacement is 2.7 liters, while D2A diesel engine's maximum torque is 225 Nm, maximum power is 75 kW, and its displacement is only 2.2 liters. Compared with 4JB 1, the kinetic energy is increased by about 25%. Another point is that this D22A diesel engine is more energy-saving than 4JB 1, and the fuel consumption per 100 kilometers is about 2L.