Honda Motor said it will expand an 'investigative' recall to replace potentially lethal Takata  air bag inflators across the globe, taking the total Takata-related recall tally of all brands to more than 19 million since 2008.

Honda earlier added about 2.6 million cars in the United States when it expanded nationwide a recall of driver-side air bag inflators that was previously limited to 11 states and territories with hot and humid climates.

Honda is working out which models and how many vehicles would be covered under a similar recall in other markets, a spokeswoman said on Tuesday.

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 US 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.

Given Takata's response, Honda's US unit said on Monday it would voluntarily expand its regional recall to cover a total 5.4 million vehicles across the United States.

In Japan, the transport ministry said Honda had informed it on Tuesday of its plans to take similar action in the domestic market.

About 200,000 vehicles from Honda and Mazda Motor would be subject to an expanded recall in Japan, the ministry has said. Mazda is still considering whether to follow suit.-Reuters