Navistar Engine Group is a world leader in diesel engine manufacturing, offering a high performing family of 50-475 cv (37-354 kW) diesel-powered engines. The company holds 42 percent market share of medium-duty diesel engines and 64 percent market share of school bus engines in North America. In South America, MWM Diesel Engines, a subsidiary of Navistar Engine Group is a leading diesel engine manufacturer with 30 percent market share. In addition, joint ventures have led to greater Navistar growth in other continents, especially in Europe.