After protests erupted across China last year over the Senkaku Islands, sales of Japanese-branded cars there plummeted. Nissan Motor Co.'s prescription for winning back Chinese drivers: a quieter ride and better gas mileage.

Nissan introduced its new Teana sedan Tuesday in the southern city of Guangzhou, the site of riots that saw Japanese businesses looted last year.

The company is counting on the car to revive sales in its biggest market, and as the first major new model by a Japanese automaker since the protests erupted in September, the Teana will serve as a barometer for sentiment toward Japanese brands.