Shares of scandal-hit Japanese auto parts maker Takata Corp extended their slide on Friday after more automakers considered abandoning its air bag inflators, and have lost almost half of their value over the past three days.

The stock was down 13 per cent at 770 yen as of 0130 GMT, after touching its lowest point since March 2009.

Mazda Motor Corp on Thursday joined Takata's top customer, Honda Motor Co, in saying it would drop its inflators containing ammonium nitrate - a volatile chemical suspected of causing the defects - from its new cars.

Subaru-maker Fuji Heavy Industries Ltd and Mitsubishi Motors Corp said they were considering doing the same.

Takata's inflators, which can explode with too much force and spray metal fragments inside cars, have led to the recall of tens of millions of vehicles worldwide. Regulators have linked them to eight deaths, all in Honda's cars.

Earlier this week, Takata said it would pay a $70 million fine imposed by the U.S. National Highway Traffic Safety Administration in instalments, and phase out the use of ammonium nitrate as a propellant in its air bag inflators.

Takata is scheduled to report earnings after the close on Friday.

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