My car is a 13 MG6, and now when I get on the 80, the steering wheel shakes badly. And air conditioning. I tremble when I drive.

The steering wheel wobbles when it reaches a certain speed, which is generally a problem of tire hub dynamic balance. Check whether the dynamic balance of the front wheel is good. In addition, when balancing, you can check whether the hub is deformed.

When you turn on the air conditioner, you can pay attention to whether the engine speed is stable or floating. If so, you can try to clean the throttle. If there is nothing wrong with the throttle, you can check the belt and the air conditioner compressor pump.