Hello together, on the topic of automatic air conditioning vs. manual air conditioning I have a question. I’m driving an Astra G. The Z22SE engine, which is considered very smooth. I can confirm that. Before I drove a Peugeot 206, also with manual climate. Now I noticed that the running culture of the vehicle/motor changes considerably as soon as the climate is on. The nice quietness of my Astra is gone, it vibrates strongly and feels more like you are in a This was not the case everywhere in cars with automatic climate control. I have a direct comparison with an Audi A3 8L and an approx. 7 years old Hyundai. Both vehicles are not quite as quiet as my Astra without a climate. But switching on automatic climate control hardly changes the running culture of the two, while it is completely different for me. Therefore my question(s): Where does the phenomenon come from? The difference between an automatic and manual climate? I don’t understand this and therefore find it rather unpleasant to switch on the climate when passengers are sitting in the car, because it just doesn’t feel more up to date, when the car vibrates so much, etc. I have already made a defect in my climate. But would that have been the case with both Astra and Peugeot 206. Of course, but it would be funny (I think), which basically ran the climate for both of them. Thanks for all the help.