Existing investor Sequoia Capital and other undisclosed investors also participated in the round, which is worth tens of millions U.S. dollars, says the statement.
Baidu made the investment as a strategic investor, and plans to incorporate 51YongChe to some of its own services and platforms.
Launched in December 2014, the four-month-old 51YongChe received angel investment from Lei Jun, founder of Chinese smartphone marker Xiaomi Inc.
It received an undisclosed series A investment from Innovation Works, and an undisclosed series B investment from Sequoia Capital.
51YongChe’s mobile apps currently covers major cities in China, including Beijing, Shanghai, Guangzhou and Shenzhen.