Why is the same speed and speed of Pentium b90 different? Both are 120 yards, flat road, constant speed cruise.

The first thing to make sure is to drive under the same road conditions, because if there is an uphill section, the engine torque will increase to maintain the same speed, which may happen.

If the road conditions are excluded, this situation may occur under the premise that the accelerator pedal force and the throttle opening are unchanged, then it may be that the fuel injector has carbon deposits, the gasoline is not atomized well, and the combustion is not sufficient, which leads to the decline of engine power. It is recommended to go to the 4S shop for inspection. If the engine has too much carbon, it is necessary to clean the oil circuit.