In September, diesel engines continued to perform well, with sales of multi-cylinder diesel engines reaching nearly 3.1 million units in the first three quarters, a year-on-year increase of 5.6%

According to the news from the first commercial vehicle network, the diesel engine continued its outstanding performance in September, achieving double growth year-on-year and month-on-month. In September, domestic diesel engine sales reached 421,800 units, a month-on-month increase of 13.25% and a year-on-year increase of 12.45%; from January to September, cumulative diesel engine sales totaled 3.8264 million units, a year-on-year increase of 5.39%. The multi-cylinder diesel engine market, which has a high proportion of commercial vehicles, showed synchronized fluctuations, with month-on-month, year-on-year, and cumulative sales all achieving growth.

Multi-Cylinder Diesel Engines: Nearly 3.1 Million Units Sold from January to September, Year-on-Year Increase of 5.6%

In September, the sales of multi-cylinder diesel engines in China reached 345,100 units, a month-on-month increase of 12.51% and a year-on-year increase of 15.42%; from January to September, cumulative sales reached 3.0959 million units, a year-on-year increase of 5.58%, with the growth rate improving by more than 1 percentage point compared to January to August. Among them, the companies with cumulative sales ranking in the top ten in the industry are: Weichai, Yuchai, Yunnei, Quanchai, Xinchai, Dongfeng Cummins, Jiangling (000550.SZ), New Power Technology, Hive Power, and Jiefang Power, with rankings changing again. The cumulative sales of the top ten accounted for 78.06% of the total sales of multi-cylinder diesel engines, an increase of 0.11 percentage points compared to January to August (77.95%).

Looking at the sales in September alone, all ten companies achieved month-on-month growth in multi-cylinder diesel engine sales. Among them, Weichai remains the champion, selling 73,300 units, with a month-on-month growth of 4.77%; the second place is Yuchai, with sales of 41,000 units, showing slight growth compared to the previous month; the third place is Yunnei Power, with sales of 29,200 units, achieving a month-on-month growth of 30.83%. In September, facing the traditional peak season, Yunnei Power seized market opportunities, achieving rapid month-on-month growth in sales. The fourth place is still Anhui Quanchai, which sold 26,800 multi-cylinder diesel engines in September, achieving a month-on-month growth of 25.57%. The top four are the only companies with sales exceeding 20,000 units in September.

Sales of Multi-Cylinder Diesel Engines from January to September 2025 (Unit: Ten Thousand Units)

The cumulative sales data in the above table shows that from January to September 2025, Weichai still maintains its lead, with cumulative sales of multi-cylinder diesel engines reaching 573,700 units, achieving a year-on-year growth of 1.62%, with the year-on-year growth rate turning from negative to positive, holding a market share of 18.53%; the second place is still Yuchai, with cumulative sales of 434,700 units, achieving a year-on-year growth of 27.08%, holding a market share of 14.04%, significantly increasing its share by 2.74 percentage points compared to the same period last year; the third place is still Yunnei Power, with cumulative sales reaching 264,700 units, holding a market share of 8.55%; the fourth place is Anhui Quanchai, with cumulative sales of 257,600 units, achieving a year-on-year growth of 12.71%, capturing 8.32% of the market share, with an increase of 0.77 percentage points compared to the same period last year; the fifth place is Zhejiang Xinchai, with cumulative sales of 193,800 units, achieving a year-on-year growth of 2.92%, holding a market share of 6.26% The sixth place is Dongfeng Cummins, with a cumulative sales volume of 163,800 units, achieving a year-on-year growth of 10.88%, and a market share of 5.29%, an increase of 0.41 percentage points compared to the same period last year.

Among the cumulative sales, New Power Technology and Hive Power have both seen an increase in their rankings, with both companies rising one position compared to January-August. New Power Technology ranks eighth in the industry, with a cumulative sales volume of 127,200 units, achieving a year-on-year growth of 20.45%, and a market share of 4.11%, an increase of 0.62 percentage points compared to the same period last year; Hive Power ranks ninth, with a cumulative sales volume of 127,200 units.

Multi-cylinder Diesel Engines for Commercial Vehicles: 1-9 Months Sales 1.48 Million Units, Weichai Exceeds 320,000

In September 2025, the sales of multi-cylinder diesel engines for commercial vehicles reached 170,400 units, a month-on-month increase of 12.12% and a year-on-year increase of 26.42%; from January to September, the cumulative sales reached 1.4845 million units, a year-on-year increase of 6.57%. The top ten companies in cumulative sales are: Weichai, Yuchai, Yunnei, Jiangling, Foton Cummins, Jiefang Power, Quanchai, Jianghuai, Dongfeng Cummins, and New Power Technology, with no changes in rankings compared to January-August. The sales of the top ten account for 88.18% of total sales, slightly down from January-August.

In September alone, Weichai continued to hold the championship, selling 45,400 units of multi-cylinder diesel engines for commercial vehicles, continuing to stand out with a month-on-month growth of 9.83%; the runner-up is Jiangling, with sales of 19,700 units, a month-on-month increase of 32.08%; Yuchai ranks third, selling 17,900 units, a month-on-month increase of 5.91%; fourth place is Yunnei Power, with sales of 13,300 units, a month-on-month increase of 15.46%; fifth place is Foton Cummins, with sales of 13,100 units, a month-on-month increase of 14.89%. All five companies sold over 10,000 units in September. Let's take a look at the cumulative sales performance of each company.

Sales situation of multi-cylinder diesel engines for commercial vehicles from January to September 2025 (unit: ten thousand units)

The cumulative sales data in the table shows that from January to September 2025, Weichai remains the champion, with cumulative sales of 323,500 units of multi-cylinder diesel engines for commercial vehicles, a year-on-year growth of 1.57%, and a market share of 21.79%; Yuchai continues to rank second, with cumulative sales of 189,300 units, achieving a year-on-year surge of 49.51%, maintaining rapid growth, with a market share of 12.75%, a significant increase of 4.12 percentage points compared to the same period last year; third place is Yunnei Power, with a cumulative sales volume of 148,700 units, achieving a year-on-year growth of 4.22%, capturing 10.02% of the market share, an increase of 0.29 percentage points compared to the same period last year; Jiangling Motors ranks fourth, with cumulative sales of 148,000 units, accounting for a market share of 9.97%; Foton Cummins ranks fifth, with cumulative sales of 118,800 units, achieving a year-on-year growth of 0.20%, capturing 8% of the market share.

Seventh place Anhui Quanchai also continues to grow rapidly, with cumulative sales of 82,400 units, achieving a year-on-year growth of 23.72%, accounting for a market share of 5.55%, an increase of 1.01 percentage points compared to the same period last year.