Honda Motor Co. may start mass production of its FCX Clarity fuel-cell car within 10 years to meet growing demand for fuel-efficient models, Honda President Takeo Fukui said Monday.

"If we can bring costs down by a certain amount, I think we can start mass production," Fukui said in an interview at Honda's new-model center in Tochigi Prefecture. The automaker began production of the FCX Clarity at the center Monday.

Honda said it plans to lease 200 FCX Clarity vehicles in the United States and Japan over the next three years and has five customers for the car in the U.S.