An investigation into transmission control problems in some BMW 7-series luxury cars has been upgraded to an engineering analysis after U.S. safety regulators found seventeen crashes, five of which resulted in injuries. The National Highway Traffic Safety Administration (NHTSA) began their investigation last August after receiving almost fifty complaints related to the push button start and electronic transmission controls on these vehicles. The shifter is designed to automatically shift the vehicle to “park” under a variety of conditions, including after the driver has pressed the ignition button to turn off the engine. In several cases, owners thought their vehicles were in park when they were still in neutral, and their vehicles rolled away unexpectedly and crashed. The investigation covers nearly 122,000 BMWs from the 2002 through 2008 model years.