Output growth for commercial vehicles in China is expected to slow through 2015, after a two-year surge spurred by the government's 4-trillion-yuan stimulus package.

From 2007 to 2011, output growth averaged 11.5 percent, the highest in the world. But that rate is expected to plunge to 3.2 percent until 2015, while the global average is expected to be 4.3.

Many manufacturers built up inventory in response to the stimulus package, which was aimed at saving the country from recession. Working off that inventory will drag down output, according to consulting firm AlixPartners.

"The slowdown of growth in the commercial sector in China… puts pressure on players in the sector to improve cost structures and efficiencies," said Ivo Naumann, AlixPartners' managing director and head of the firm's Shanghai office.