Volkswagen AG is reviving plans for a partial share sale of its Traton SE heavy-trucks division -- just two months after shelving the push citing poor market conditions -- and said it may sell two non-core businesses.

The German carmaker hopes to list the trucks unit by the time of its summer break in August, it said in a statement May 13. The company also plans to look for a sale, joint venture or partnership for its MAN Energy Solutions and Renk AG divisions, while moving forward with plans to manufacture batteries for electric cars.

A share sale of the...