Recently, Vietnam Bao Yan bus company bought 31 Guilin Daewoo buses with Euro IV emission standards , equipped with Yuchai YC6J200-42 engines. This is the first batch of Vietnamese nationwide investment in the use of the European IV buses, marking the Vietnamese motor vehicle officially entered the European IV era.

  It is reported that the Vietnamese Ministry of Transportation plans to upgrade the vehicle emission standards from Europe II directly to the European IV, and in 2018 the full implementation of commercial vehicles in Europe IV emission standards. In the implementation of the upgrading of vehicles in Vietnam, Yuchai took the lead, the joint car factory firstly put Euro IV engine products, pilot Vietnam's upcoming European IV era. At present, Yuchai is in full swing to promote Euro IV production, the local service station electronic control engine maintenance and repair capacity to strengthen the upgrade for customers to use Yuchai new products to do a full protection.