Toyota Motor Corp. and its group companies are stepping up efforts to develop auto parts for hydrogen fuel-cell vehicles and expand their market amid a global shift to eco-friendly cars that do not emit carbon dioxide.

The largest automaker in Japan last month released its second-generation hydrogen-powered Mirai sedan, meaning "future" in Japanese, with a longer range than the previous model, which was the world's first mass-produced fuel-cell vehicle.

The five-seater Mirai has three tanks to hold the hydrogen fuel that is used to generate power for its electric motor, giving it a range of up to 850 kilometers, roughly 30% more than the first-generation, four-seater sedan that can travel 650 km on its two tanks. Toyota launched the original Mirai in 2014.