Windshield cracks or distorts

The investigation focused on spontaneous breakage (fracture) of the panoramic sunroof (sunroof) on MY 2011-2013 Kia Sorento vehicles. The sunroof is constructed of tempered glass (often referred to as ?safety glass?), which, when broken, crumbles into granular chunks rather than splintering into jagged shards. The failure summary above shows NHTSA reports identified by the Office of Defects Investigation (ODI), and reports submitted by Kia from start of production of the subject MY 2011-2013 Kia Sorento through October 8, 2019, the date of ODI's last request for Kia data.Reports of sunroof failures typically occurred while the vehicle was in motion and often described a loud noise when the fracture occurred. If the sunshade is closed when the sunroof fractures, the particles are contained, otherwise the particles can drop into the passenger compartment.Reported injuries generally were minor in nature, such as nicks and cuts that often occurred when complainants were cleaning-up glass particles post-incident. No crash incidents have been identified, and complaints display a declining trend since 2014.During EA14-002, ODI requested and obtained failure data for the subject vehicles, the MY 2014 Sorento (which used a similar sunroof from a different supplier), and other peer Kia products (Optima and Sportage).ODI also requested and obtained failure data for peer vehicles produced by Hyundai, Ford, Nissan, and Volkswagen and failure reports through a General Order NHTSA issued to

On October 21, 2013 the Office of Defects Investigation (ODI) opened PE13-035 in order to further examine claims that the sunroof would spontaneously break on 2011-2013 Kia Sorento vehicles.The majority of these claims occurred while the vehicle was in motion.Glass shattering while driving may distract the driver, and the resulting glass particles which enter the passenger compartment may injure occupants.To date, ODI has received a total of 26 reports of sunroof breakage on the subject vehicles. Of those, 24 occurred while the vehicle was in motion.There were also four (4) injury incident reports for minor cuts/scratches. Kia submitted a total of 123 field incidents related to sunroof breakage in response to ODI's information request. Of this number, ODI identified 78 unique vehicle identification numbers (VINs), with 9 matching ODI complaint vehicles.Sixty of the submitted reports occurred while the vehicle was in motion.Fourteen (14) of the submitted reports alleged minor cuts/scratches from falling glass.Kia also submitted a total of 101 warranty and goodwill claims for sunroof replacement, of which 86 unique VINs were identified.Kia stated in its response that their field inspections identified only one potential cause for the sunroof breakage - external impacts from rocks or other foreign objects encountered while the vehicle was in motion.In the other instances, no evidence of a defect was found, however, Kia's inspection results were inconclusive as to a cause for the