Two problems related to adaptive cruise control have been reported for the 2021 Subaru Impreza. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2021 Subaru Impreza based on all problems reported for the 2021 Impreza.
Front windshield spontaneous cracking from defroster area in a "j" shape. This is the second windshield since new to do this (2021 model). Available for inspection. The first windshield was inspected and replaced by Subaru at their cost minus eyesight recalibration (adas). First windshield was inspected by insurance and no impact point was found and was notified to contact dealer before filing a claim with insurance. The second cracked windshield is in the same area as the first with exactly the same shape and abruptness. Cracked while car was sitting over night. Temps at 6 am were 37 degress. Temps at time of crack were 60 degrees. Car is equipped with eyesight that is affected by the crack once it grows into the eyesight camera view.
I was using the adaptive cruise control on the highway set to 55 mph. The car suddenly decelerated to ~44 mph so quickly I had whiplash. There was no other vehicle in front of me and the highway was clear of debris. The dealership said this could be caused by a glare.