What are the reasons for the sudden rush and frustration during the automatic driving of Buick Hideo 1.8?

My personal opinion is that there is something wrong with the gearbox and the shift time is not allowed.

Only represents personal views.

As far as I know, the throttle will not cause retrogression. I never trusted 4S stores. I think you'd better try another repair shop.

In order to solve this frustration, 4S stores generally use the method of cleaning the throttle, which is said to be solved by increasing the speed. Judging from my limited knowledge, it basically conforms to what you said. But this is still a temporary solution, so I personally insist on focusing on the gearbox.

Also, you can pay attention to the time when setbacks happen, whether they all happen at a fixed speed, a fixed speed. If so, it is basically a gearbox problem. 4S cleans the throttle for you. That's money from you. This is only a superficial solution for you.

The above only represents personal views.