Beijing appears to be having second thoughts about making China the new home for gas-guzzling Hummers.

After winning an auction to acquire Hummer and its tooling gear from General Motors’ bankruptcy sale three months ago, a Chinese heavy equipment maker has hit a roadblock with its own regulators to set up Hummer’s new base on the mainland.

China’s Commerce Ministry kicked back for further review an application to approve the Hummer sale to Sichuan Tengzhong Heavy Industrial Machinery for about $100 million. “It’s not in coordination with our nation’s industrial policy,” said Vice Minister of Commerce Chen Jian, without elaborating. China already has nearly three dozen domestic automakers.

China is encouraging car companies to build more fuel-efficient cars, including hybrids, to sell overseas.