U.S. officials have warned that more than 300,000 recalled Honda vehicles that have not been repaired to address issues with Takata airbag inflators are considered “unsafe” to drive until they have been fixed.

Safety regulators maintain that new test data for some 2001-2003 Honda and Acura vehicles shows that they have a 50 percent chance of the air bag inflators experiencing a dangerous rupture during a crash.

Honda models affected by the recall include the 2001-2002 Honda Accord, Honda Civic, 2002 Honda CR-V, Honda Odyssey, 2003 Honda Pilot, 2002-2003 Acura 3.2 TL and 2003 Acura 3.2CL. To date, Honda has repaired 70 percent of the 1.08 million vehicles that are equipped with the airbag inflators.

Investigators have attributed the faulty Takata airbag inflators to the deaths of 14 people worldwide, 13 of which involved Honda vehicles. Close to 100 million inflators deployed in cars from 14 automakers have been declared unsafe.