I've had my Model Y for 3 months now. From Seattle & drove down to Phoenix to see family. The Y was very hot so I had an installer friend put 25% on the front driver/passenger side windows, 70% on the front windshield & a 20% ceramic for the sun roof. Since the sun roof was so big, he used residential window tint normally used for home windows. Helped with heat and privacy a lot! Although, with that dark of tint, its very hard to see inside the car at night with black interior.