Hybrid vehicle laggard Nissan hopes to catch up with its rivals after launching the company's own green car technology next year, an executive said Tuesday.

Nissan Motor Co., Japan's No. 3 automaker, has fallen behind its bigger rivals Toyota Motor Corp. and Honda Motor Co. in the increasingly competitive market for gas-electric hybrid vehicles.

A new model of the Toyota Prius, the world's top-selling hybrid, went on sale Monday, offering better fuel-efficiency and more size. Toyota plans to sell 10,000 a month in Japan, as well as an additional 2,000 of a cheaper old-style Prius model.