AC systems shouldn’t get low on refrigerant unless there is a leak. To find a leak they can put UV dye in the system and/or take out the refrigerant and compare the amount to the known capacity. If they measure less than went in there is a leak. The dye will generally show up at the connections where the leak is. If it’s in the evaporator you can get dye in the condensate under the car.
In my experience the golf platform AC is pretty weak in general. The entire time I’ve had my car from new I’ve had to put it on max AC to keep the car cool and my phone from overheating when temps get into the high 80s or higher.
I’ve read you can have it coded for “cool country or hot country” which I’ve never attempted. The AC works better at speed on the highway vs idling or driving slowly around town. The condenser (near the radiator) gets more airflow at speed and functions as a heat exchanger more efficiently. Also the panoramic roof on the models that have it creates quite a greenhouse effect.
In my experience the golf platform AC is pretty weak in general. The entire time I’ve had my car from new I’ve had to put it on max AC to keep the car cool and my phone from overheating when temps get into the high 80s or higher.
I’ve read you can have it coded for “cool country or hot country” which I’ve never attempted. The AC works better at speed on the highway vs idling or driving slowly around town. The condenser (near the radiator) gets more airflow at speed and functions as a heat exchanger more efficiently. Also the panoramic roof on the models that have it creates quite a greenhouse effect.