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Photographer: Akio Kon/Bloomberg Photographer: Akio Kon/Bloomberg

Honda Motor Co. will introduce next month a fuel-cell vehicle with a longer driving range than Toyota Motor Corp.’s Mirai, as the two Japanese carmakers compete for a lead in the hydrogen-based technology.

Honda will announce the price of the car and when it will go on sale at the Tokyo Motor Show, which opens to the public on Oct. 30, about a year after Toyota introduced the Mirai. Honda has previously said it will go on sale by the end of March 2016.

The as-yet unnamed five-seater can travel more than 700 kilometers (435 miles) on a single charge under Japanese standards. Honda has made it roomier than the Mirai by placing the downsized fuel-cell stack under the hood instead of below the seats as in the case of Toyota’s model.

Automakers are under pressure worldwide to offer vehicles that emit little or no carbon to meet increasingly stringent standards on emissions, a task that has garnered renewed regulatory scrutiny after Volkswagen AG admitted it rigged diesel vehicles to pass U.S. pollution tests.

Honda last year delayed the introduction of the hydrogen-powered car to improve its performance. Fuel cells generate power through the reaction of hydrogen and air, producing only water vapor as a byproduct.

Honda’s new fuel-cell stack is 33 percent smaller than the previous version, the company said in a statement. The carmaker in 2005 was the first to begin lease sales of fuel-cell vehicles to individual customers in the U.S., it said.