China's auto sales may fall 10 percent this year, when government stimulus policies expire and restrictions on car licenses continue, said the China Automotive Technology & Research Center.

Industry-wide vehicle deliveries fell for the first time in 27 months in April, which saw total sales decline 0.25 percent to 1.55 million units.

The decline was attributed to rises in fuel prices. It is also because cities implemented controls to curb traffic, and because Japan's recent earthquake had slowed deliveries.