Why do my Mazda 3s keep getting bubbles in the rear window?

Method 1: These models are known for strange flaws happening on the rear window, regardless of the level of experience of the tinter. These anomalies only seem to happen on the Mazda 3, but not the other Mazdas. One theory posits that there is a design flaw that allows moisture to build up inside the car while the film is curing which prevents it from adhering properly to the glass. This may also cause the film to peel off. If you’re not a veteran tinter, consider turning these models away. If you’ve already committed to the job, try letting the film fully cure with the windows open and fans running for a couple of days before giving it back to the customer. Another theory suggests that the defrosters don’t have enough current running through them, causing the film the be subject to higher amounts of moisture.