I have 2018 Corolla XSE at 55000 miles. I recently started driving long range on highways and using the AC constantly. I noticed that when I come to red light/stop, RPM Lowers down than normal, and the car shakes a little bit. Same thing happens when RPM goes up. But shaking is felt more when it goes down.
Took the car to mechanic, he said first step would be replacing the AC Compressor, because there can be shortage. I wanted to get an opinion before going forward with it.
Edit: It does not only happen when AC is on.