Why are bubbles so common on the back glass and passenger doors of Ford Fusions?

Answer 1: These bubbles are extremely common, even with high-quality film. That being said, low-quality film fails more often. It’s best to use the best film you have, as the film will be subjected to considerable stress as you try to tint the window.    Answer 2: It is a notoriously difficult window to tint, and tinters often end up charging clients extra because of this. In addition, customers must be informed that they cannot use their defrosters with the tint on, as it blisters and burns the film. The same issue occurs with all modern Nissans and Kia Optimas.    Answer 3: This may be due to the flatness of the glass, as heat absorption may cause adhesive to fail at an accelerated rate.