Shanxi throttle

Non-professionals, for reference only.

The main reasons may be three aspects. First, the air intake (related to geographical location and altitude) directly affects combustion, resulting in a decline in power output. You can try to find some special plates. Not only the throttle valve will affect the air intake, but also the carbon deposit of the gas filter and motor will affect the air intake. The second is the oil circuit. When the car goes uphill and downhill, the oil level in the fuel tank will change (this is easy to understand), and the abnormal operation of the oil pump and nozzle will lead to problems. Third, the grip of the tire has nothing to do with the power output, but it feels similar, and everyone thinks the car is boring.

Try to find some steep slopes and pay attention to the critical point of change. In addition, you can change to a 4S shop and check it again (if it is a 4S shop where you bought your car, he may pass the buck because your car has not been insured).