On my Standard MY22, everything is fine now after the third service in Dezember '25. All systems were updated (including HVAC), and a climate check plus cleaning the HVAC system was carried out. After that, I used a professional digital weather station from Conrad (an electronics retailer for private and business customers in Germany) for 14 days to monitor the results — the main module on the front passenger seat, the second module on the rear seat bench, and the third module in the trunk.
The temperature was set to 20°C with all vehicle Auto settings enabled, including automatic air recirculation. The result: 20.3°C in the front, 19.8°C on the rear seat, and 18.7°C in the trunk. In Auto mode, the air volume was set to “medium,” suitable for two people on a permanent basis. Humidity is also within range at 43%, and the windows no longer fog up during winter.
Before the third service, I had to set the temperature to at least 25°C just to get the cabin “lukewarm.”