He proposed that the government, officials and celebrities should buy Chinese-branded vehicles to help boost the image of China-made cars.

He said Chinese brands have made great strides in improving car quality and after-sales service, and sometimes even outperform some international brands.

Chinese-branded vehicle sales totaled 532,000 in April, and their combined share slipped to 34.6 percent in the month, the lowest since July 2014.

His proposals also cover new energy vehicles. Zhu said people's reluctance to choose such vehicles lie in poor value for money compared with gasoline cars and the lack of charging poles.

He suggested the authorities should review the new energy vehicle strategy and make sure such cars are easy to use, including cutting parking fees and charging fees for them.