Who Is The Largest Automobile Engine Manufacturer in China?

Domestic automotive engines are divided into two major tracks: passenger car gasoline engines and commercial vehicle diesel engines. If evaluated based on comprehensive revenue scale, product line coverage, total production and sales, and full scenario supporting capabilities, Weichai Power is the largest comprehensive automotive engine manufacturer in China; The single category of passenger car gasoline engines is led by Chery Power in terms of sales.

1、 Weichai Power's comprehensive leading position

Weichai Power, a subsidiary of Shandong Heavy Industry, is the world's largest manufacturer of heavy-duty diesel engines. Its total revenue for the year 2025 will exceed 230 billion yuan, far exceeding the scale of other power manufacturers. In the first five months of 2026, the total sales volume of multi cylinder diesel engines in China was 410500 units, with a market share of 20.19%, ranking first in the industry; The market share of heavy-duty truck diesel engines exceeds 30%, while the market share of gas-fired heavy-duty truck engines is over half.

Our products cover heavy trucks, light trucks, buses, construction machinery, ships, and generator sets, while also deploying hybrid range extenders and hydrogen internal combustion engines. We not only supply our own vehicles such as Shaanxi Automobile and Heavy Duty Truck, but also provide support to dozens of other car companies, ranking first in the industry in terms of industrial chain integrity.

2、 Top companies in each segmented track

In the field of passenger car gasoline engines, Chery Power is the sales champion, with a sales volume of 1.31 million gasoline engines from January to May 2026. Relying on its export and supply advantages, it leads the gap and specializes in Kunpeng fuel and hybrid engines. BYD and Geely closely follow, but only focus on hybrid and gasoline models for passenger cars, with a single application scenario.

The second ranked commercial vehicle diesel engine is Yuchai Machinery, which focuses on passenger cars and light trucks; Jiefang Power and Fukuda Cummins only serve their own commercial vehicle groups, with limited external supply scale.

3、 Distinguishing core differences in evaluation dimensions

Simply looking at the installed capacity of gasoline engines in passenger cars, Chery has a clear advantage; Only looking at the diesel engine of passenger cars, Yuchai has outstanding strength. However, to measure the 'overall maximum', it is necessary to take into account commercial vehicles, non road vehicles, new energy power, revenue, and global layout. Weichai simultaneously integrates engines, transmissions, and axle powertrains, with a high proportion of overseas market sales. Its production bases are located both domestically and internationally, and its comprehensive production capacity, output value, and supporting scenarios are unmatched.

4、 Long term advantages of industrial layout

Weichai continues to invest in the research and development of high-power, low-carbon, and hydrogen powered engines, with traditional internal combustion engines and new energy running in parallel. A complete self-developed manufacturing system, a large number of third-party supporting customers, and stable large revenue have jointly established its industry positioning as the largest domestic automotive engine manufacturer.