Thousands of drivers have reported their panoramic sunroofs exploding unexpectedly, with the National Highway Traffic Safety Administration (NHTSA) receiving 2,167 complaints from 18 different car manufacturers over the past five years. Despite these complaints, including cases where glass flew and caused panic, federal regulators have determined that this issue does not constitute a safety concern. The NHTSA launched a seven-year investigation into exploding sunroofs, concluding it in 2021 without identifying a specific cause, stating that such incidents are not uncommon but do not qualify as a safety defect.

While the NHTSA's investigation found no significant injuries, many affected individuals and safety advocates, like the Center for Auto Safety's Executive Director Michael Brooks, consider the issue a safety hazard. They argue that the sudden and loud explosion could distract drivers, potentially leading to accidents. Although the investigation suggested a declining rate of incidents over time due to industry improvements, the problem persists, with some reports indicating that the rate of complaints is accelerating.

Automakers typically do not cover sunroof damage under warranty, treating it similarly to a broken window or windshield. This leaves drivers with expensive repair bills, often exceeding $1,000. Kia, for example, declined to cover the replacement cost for a customer whose sunroof exploded. However, some consumers have had success in getting repairs covered after persistent complaints to dealerships and manufacturers. Hyundai states that customer safety is their priority and that commissioned studies found no inherent defect, attributing damage to foreign object impact, though they continue to monitor the issue.

Consumer Reports' analysis of NHTSA data since 1995 reveals at least 859 official accounts of sunroofs shattering without known cause, with 71% of these occurring since 2011. While injuries are mostly minor cuts or scrapes, the danger of distraction and potential crashes remains a concern. The problem appears to be widespread across the industry, affecting at least 208 models from 35 brands, but is more prevalent in some, notably Kia and Hyundai, relative to their market share. The Hyundai Veloster, Scion tC, and Hyundai Palisade are among the vehicles with the highest number of complaints.