Takata's air bag inflators have been found to rupture and shoot metal shards into the vehicle, and have been linked to five deaths.
As consumer concerns grow over the safety of Takata air bags, the U.S. National Highway Traffic Safety Administration (NHTSA) last month ordered the supplier to take nationwide a recall of certain driver-side inflators that had been limited to areas of high humidity.
Takata has refused, challenging NHTSA's legal authority to order such a recall when the cause behind the unusual deployment of its air bags is still unknown.
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Given Takata's response, Honda's U.S. unit said on Monday it would voluntarily expand its regional recall to cover a total 5.4 million vehicles across the United States.
On Tuesday, Honda said it would recall more than 134,000 cars in Japan covering six models made between 2002 and 2013 that carry Takata driver-side air bags subject to the wider recalls in the United States. Honda will begin the recall in Okinawa, an island in southern Japan, at the end of the month.
Japan's transport ministry has said that about 200,000 vehicles from Honda and Mazda Motor would be subject to an expanded recall in Japan. On Tuesday, Mazda Motor said it will soon expand a recall of vehicles in the United States involving potentially defective air bags by Takata.
The carmaker will make existing regional recalls within the U.S. nationwide but has not yet determined the number of vehicles involved or when it will launch the recall, Keiko Yano told Reuters.
More than 13 million vehicles by all makers are subject to recall in the United States and 19 million globally. Defective Takata air bag inflators, which can explode and shoot shrapnel into the car, have been linked to four deaths in the United States and one in Malaysia.
The Mazda recall expansion will cover vehicles with driver's-side air bags, Yano said, adding to the 86,773 already under recall with Takata air bags on the driver's or passenger's side.
Unlike NHTSA, Japan's regulator cannot order a recall unless the cause of the problem is known. Transport Minister Akihiro Ohta said the ministry would see whether it should change the law to be able to force an 'investigative' recall after gauging the current series of Takata-related recalls, but added there were no immediate plans.
Several automakers have called back millions of cars in the United States to replace Takata-made inflators and investigate the root cause of the problem in what is called a Safety Improvement Campaign, which is different from a typical recall to address known defects.
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Takata is struggling to make replacement parts fast enough, and has forecast a loss this business year amid an escalating recall crisis.
The Nikkei business daily on Tuesday quoted Honda CEO Takanobu Ito as saying the automaker would step in to support Takata if needed, but Honda said he was not specifically referring to financial aid.