Tesla Model 3 has a big one piece of glass on the rear section of it , this is by far a hard glass to tint . One piece of window film is required to do this rear glass, some tint companies don't do it in one piece and leave a line on the middle of glass that you can definitely see it from the inside, Driving with this line on the middle of your rear glass could be frustrating because is gonna be on your mirror view angle . Here at IE Detailing and Tinting https://www.iewindowtinting.com/windowtint
We do the rear glass of the Model 3 in one whole piece, this will give to your car a single tone and you won't have that line on the inside of rear glass ..