Does your Mercedes have one of those odd joystick dial things in the center? My mom’s Mercedes and my grandma’s Audi have the absolute worst physical interfaces; buttons are good for climate control, but touch screens would be better than what they have for almost all other features.
Is it loud? The heat pump in my Leaf cycles off and on about every 10 seconds when it’s on low and would be obnoxious if I was trying to sleep.