According to statistics from the China Internal Combustion Engine Industry Association, in August 2025, sales of internal combustion engines reached 4.4476 million units, an increase of 1.94% month on month and 17.63% year-on-year; The power output reached 264.3345 million kilowatts, a month on month increase of 9.02% and a year-on-year increase of 13.88%. The cumulative sales volume from January to August was 34.6 million units, a year-on-year increase of 14.97%; The cumulative power reached 19815.358 million kilowatts, a year-on-year increase of 9.10%.

Classification of fuel types:

In August, sales of diesel and gasoline engines increased month on month, year-on-year, and cumulative year-on-year in the fuel category. Specifically, compared to the previous month, diesel engines increased by 1.42% and gasoline engines increased by 1.97%; Compared with the same period last year, diesel engines increased by 5.56% year-on-year, and gasoline engines increased by 18.85% year-on-year; Compared with the same period last year, diesel engines increased by 4.57% year-on-year, and gasoline engines increased by 16.19% year-on-year. In August, diesel internal combustion engines sold 372500 units (including 12500 units for passenger cars, 152000 units for commercial vehicles, 58200 units for construction machinery, 105200 units for agricultural machinery, 5500 units for ships, 38000 units for power generation, 400 units for landscaping, and 600 units for general use), and gasoline engines sold 4.0692 million units. From January to August, the sales volume of diesel engines was 3.4046 million units (including 111400 units for passenger cars, 1.3141 million units for commercial vehicles, 571000 units for construction machinery, 1.0309 million units for agricultural machinery, 43800 units for ships, 320900 units for power generation, 4900 units for landscaping, and 7600 units for general use), and the sales volume of gasoline internal combustion engines was 31.1496 million units.

Market usage situation:

In August, in the comparable caliber of the segmented market, passenger cars, commercial vehicles, construction machinery, and garden machinery increased month on month, while other uses decreased month on month. Specifically, passenger car usage increased by 10.99%, commercial vehicle usage increased by 3.17%, construction machinery usage increased by 1.60%, agricultural machinery usage decreased by 7.57%, marine usage decreased by 4.30%, generator usage decreased by 16.58%, garden machinery usage increased by 3.49%, motorcycle usage decreased by 2.40%, and general machinery usage decreased by 19.71%. Compared with the same period last year, all other classified uses except for construction machinery and power generation increased year-on-year. Specifically, passenger car usage increased by 14.72%, commercial vehicle usage increased by 17.68%, construction machinery usage decreased by 1.55%, agricultural machinery usage increased by 1.09%, marine usage increased by 7.71%, generator usage decreased by 5.75%, garden machinery usage increased by 9.16%, motorcycle usage increased by 29.54%, and general machinery usage increased by 73.82%. Compared with the cumulative increase of the previous year, all other classified uses except for construction machinery have shown positive growth. Specifically, passenger car usage increased by 10.67%, commercial vehicle usage increased by 7.28%, construction machinery usage decreased by 0.43%, agricultural machinery usage increased by 7.66%, marine usage increased by 13.73%, generator set usage increased by 17.06%, garden machinery usage increased by 13.78%, motorcycle usage increased by 24.13%, and general machinery usage increased by 4.72%.

In August, sales of passenger cars were 1.7882 million units, commercial vehicles were 202600 units, construction machinery was 62600 units, agricultural machinery was 392200 units, ships were 5500 units, generators were 126700 units, garden machinery was 130500 units, motorcycles were 1.7225 million units, and general machinery was 16700 units. From January to August, a total of 13.1463 million units were sold for passenger cars, 1.7432 million units for commercial vehicles, 604800 units for construction machinery, 3.4796 million units for agricultural machinery, 43800 units for ships, 1.1916 million units for generator sets, 1.1208 million units for garden machinery, 13.1459 million units for motorcycles, and 124800 units for general use.

Main varieties classified by single and multi cylinder usage:

The sales volume of single cylinder diesel engines in August decreased month on month and year-on-year, but accumulated year-on-year growth. In August, sales of single cylinder diesel engines reached 65700 units, a month on month decrease of 15.83% and a year-on-year decrease of 1.30%; The cumulative sales volume from January to August was 653800 units, a year-on-year increase of 5.02%. The top five companies in the ranking are: Changchai, Changfa, Sifang, Sanhuan, and Jinfei Fish. Among them, the sales volume of single cylinder diesel engines mainly used in the field of agricultural machinery in August was 58700 units, a month on month decrease of 15.67% and a year-on-year decrease of 0.95%; The cumulative sales volume from January to August was 583300 units, a year-on-year increase of 4.21%.

multi-cylinder diesel engine

The slow recovery trend of the commercial vehicle market has led to a month on month, year-on-year, and cumulative year-on-year increase in production and sales in August, resulting in similar fluctuations in sales in the multi cylinder diesel engine market where commercial vehicles account for a large proportion. In August, multi cylinder diesel engine companies sold a total of 306700 units, a month on month increase of 6.08% and a year-on-year increase of 7.15%; The cumulative sales volume from January to August was 2.7508 million units, a year-on-year increase of 4.47%. Weichai, Yuchai, Yunnei, Quanchai, Xinchai, Dongkang, Jiangling, Jiefang Power, New Power Technology, and Honeycomb Power ranked among the top ten in sales, accounting for 77.95% of the total sales of multi cylinder diesel engines; Market share proportions include Weichai 18.19%, Yuchai 14.31%, Yunnei 8.56%, Quanchai 8.39%, Xinchai 6.35%, Dongkang 5.32%, Jiangling 4.66%, Jiefang Power 4.08%, New Power Technology 4.06%, and Honeycomb Power 4.03%.

In August, the sales volume of multi cylinder diesel engines for commercial vehicles was 152000 units, a month on month increase of 9.04% and a year-on-year increase of 11.79%; The cumulative sales volume from January to August was 1.3141 million units, a year-on-year increase of 4.44%. The top ten sellers are Weichai, Yuchai, Yunnei, Jiangling, Fukang, Jiefang Power, Quanchai, Jianghuai, Dongkang, and New Power Technology, accounting for 88.26% of the total sales; Weichai holds a leading market share of 21.16% in the multi cylinder diesel engine market for commercial vehicles, followed by Yuchai at 13.04%, Yunnei at 10.31%, Jiangling at 9.76%, Fukang at 8.04%, Jiefang Power at 5.75%, Quanchai at 5.68%, Jianghuai at 4.91%, Dongkang at 4.90%, and Shanghai Mobile at 4.57%. In August, the sales volume of multi cylinder diesel engines for construction machinery was 57400 units, an increase of 0.95% month on month and a decrease of 0.21% year-on-year; The cumulative sales volume from January to August was 561100 units, a year-on-year increase of 0.79%. The top ten sellers are Xinchai, Quanchai, Yunnei, Yuchai, Weichai, Dongkang, Carter, Guangkang, New Power Technology, and Jiefang Power, accounting for 95.90% of their total sales.

Multi cylinder gasoline engine

The production and sales of passenger cars in August increased month on month, year-on-year, and cumulative year-on-year, and the sales of multi cylinder gasoline engines in the main supporting passenger car market also showed a similar trend. In August, sales of multi cylinder gasoline engines reached 1.8225 million units, a month on month increase of 10.22% and a year-on-year increase of 15.15%; The cumulative sales volume from January to August was 13.441 million units, a year-on-year increase of 10.68%. Among 45 multi cylinder gasoline engine companies, Chery, BYD, Geely, FAW Volkswagen, Changan Automobile, Honeycomb Power, Xiaokang Power, Shangtong Wuling, Guangfeng Engine, and Shanghai Volkswagen Powertrain rank among the top in terms of sales, accounting for 63.80% of the total sales. Among the companies with high sales volume, Chery, BYD, Geely, Honeycomb Power, Xiaokang Power, Shangtong Wuling, Shanghai Volkswagen Powertrain, and FAW Toyota Tianjin have shown outstanding sales growth.

The proportion of passenger cars used in multi cylinder gasoline engines was 96.98%, with sales of 1.7757 million units in August, a month on month increase of 10.98% and a year-on-year increase of 14.70%; The cumulative sales volume from January to August was 13.0349 million units, a year-on-year increase of 10.57%. Chery, BYD, Geely, FAW Volkswagen, Changan Automobile, Honeycomb Power, Xiaokang Power, Shangtong Wuling, Guangfeng Engine, and Shanghai Volkswagen's powertrain sales rank among the top.

Small gasoline engine

The industry mainly engages in import and export trade, which is significantly affected by internal and external environmental factors. In comparable caliber, the sales of small gasoline engines in August decreased month on month and year-on-year, but accumulated year-on-year growth. In August, the sales of small gasoline engines were 653800 units, a decrease of 14.65% compared to the previous month and an increase of 9.43% year-on-year; The cumulative sales volume from January to August was 6.1801 million units, a year-on-year increase of 11.45%. The top five companies in terms of sales are Runtong, Longxin, Huasheng, Lifan Internal Combustion Engine, and United Power. In terms of supporting agricultural machinery, sales in August were 287000 units, a decrease of 9.69% compared to the previous month and an increase of 1.20% year-on-year; The cumulative sales volume from January to August was 2.4486 million units, a year-on-year increase of 11.40%. In the field of supporting garden machinery, sales in August were 130100 units, a month on month increase of 3.48% and a year-on-year increase of 9.40%; The cumulative sales volume from January to August was 1.1159 million units, a year-on-year increase of 13.86%.