EXHIBIT 3

JOINT FILING AGREEMENT

The undersigned hereby agree that this statement on Schedule 13D with respect to the beneficial ownership of shares of common stock of UQM Technologies, Inc. is filed jointly and on behalf of each of them.

Dated: October 5, 2017

Sinotruk (BVI) Limited
By:	/s/ Ma Chunji
	Name: Ma Chunji
	Title: Chairman of the Board
China National Heavy Duty Truck Group Co. Ltd.
By:	/s/ Ma Chunji
	Name: Ma Chunji
	Title: Chairman of the Board