The problem was recently identified by the National Highway Traffic Safety Administration (NHTSA), who found during a round of crash tests that a limit was exceeded in one specific case.
A slight increased risk of a neck injury could occur in 5th-percentile women (about 5 feet tall and weighing between 100 and 110 pounds) who are driving and not wearing a seatbelt at the time of impact, the agency found.
BMW sent a letter to its dealers earlier this month describing the issue, and said that a fix is still being determined. A total of about 30,542 cars are affected, NHTSA said. Customers will be notified starting in January 2018.
The automaker said its own testing indicated that the i3 met all safety standards. It also said it was working with NHTSA to find the root of the problem and come up with a timely fix.
Earlier this month, BMW announced a recall for about 1 million vehicles in North America for two separate issues involving fire risks. That recall affected 670,000 2006-2011 U.S. 3-Series vehicles to fix a wiring problem in the heating and air conditioning systems that could increase the risk of a fire, the automaker said.