背景知识：

The term "low-emission cars" has become a popular term for cars with less-than-1.0-liter engine displacement capacities. Since 1998, many cities have adopted bans and other forms of curbs on low-emission cars. Shanghai banned cars 1.2 liters and below from elevated roads on September 22, 2002. In Guangzhou, capital of south China's Guangdong Province, cars 1.0-litres and below could not be registered with license plates from August 2001.

—— Excerpt from Driver Drops Lawsuit Against Beijing Traffic Police

例句：

Chinese carmakers are already witnessing an unexpected surge in domestic demand since the country substantially cut purchase taxes for cars with small engine capacities.

—— Excerpt from Stimulus measure: Being green and fair

It is widely believed that the major contributor to the staggering market growth is the government's stimulus measures that include tax cuts on low-emission cars and subsidies for rural buyers.

—— Excerpt from Volkswagen sales surge 36.7 percent in 2009