What is the reason why MG MG6 stops automatically and starts to turn on the air conditioner?

Hello, your car may have too much carbon on the accelerator. I suggest cleaning it. The idle speed of the engine is automatically adjusted by the throttle, but the load of the engine will increase when the air conditioner is turned on. The throttle should be adjusted to increase the speed. Because there is too much carbon deposit, it is blocked, so it can't be lifted up and closed. I hope my reply is useful to you.