Make sure that you have the automatic programme set to 'Intensive', since the default setting is 'Normal'. You can wander into iDrive, or it pops up automatically when you push the Auto button on the climate control.

The cooling is gradual, of course. The X5 is a large car, and on hot days, you can open the windows for the first few minutes to let the hot air out faster after the car has been sitting in the parking lot. Utilise the convenience open button on the keyfob, and also program the Parked Car Ventilation whenever you will be parked for awhile. We did this on our 118i and it alleviated the heat a bit.

I'll tell y'all this: GM cars have frosty AC. In Munich and most of Western Europe, the heat there isn't as bad. Super frosty AC is an American car thing.

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2014 Mazda 3 GT: Ø Consumption: (click for details)