The National Highway Traffic Safety Administration opened an investigation Friday into problems with air bags in Hyundai and Kia vehicles. NHTSA says it is currently aware of six crashes in which air bags failed to deploy. The crashes led to four deaths and six injuries.
The models being investigated are 2011 Hyundai Sonatas and 2012 and 2013 Kia Fortes, according to a document posted on the NHTSA website. The scope of the probe includes an estimated 425,000 vehicles.