Core Insights - The diesel engine market in China showed strong performance in September, with sales reaching 421,800 units, representing a month-on-month increase of 13.25% and a year-on-year increase of 12.45% [1] - Cumulatively, from January to September, diesel engine sales totaled 3.8264 million units, reflecting a year-on-year growth of 5.39% [1] Multi-Cylinder Diesel Engine Market - In September, multi-cylinder diesel engine sales reached 345,100 units, with a month-on-month increase of 12.51% and a year-on-year increase of 15.42% [2] - Cumulative sales from January to September amounted to 3.0959 million units, marking a year-on-year growth of 5.58% [2] - The top ten companies accounted for 78.06% of total multi-cylinder diesel engine sales, a slight increase from 77.95% in the previous month [2] Company Performance - Weichai maintained its leading position with sales of 733,000 units in September, achieving a month-on-month growth of 4.77% [3] - Yuchai ranked second with sales of 410,000 units, showing a marginal increase compared to the previous month [3] - Yunnei Power ranked third with sales of 292,000 units, experiencing a significant month-on-month growth of 30.83% [3] - Anhui Quanchai and other companies also showed strong performance, with notable month-on-month increases [3] Cumulative Sales Data - Weichai's cumulative sales from January to September reached 573,700 units, with a year-on-year growth of 1.62% [4] - Yuchai's cumulative sales were 434,700 units, reflecting a substantial year-on-year growth of 27.08% [4] - Yunnei Power and Anhui Quanchai also reported positive growth in cumulative sales, contributing to their market shares [4][5] Commercial Vehicle Multi-Cylinder Diesel Engine Sales - In September, commercial vehicle multi-cylinder diesel engine sales were 170,400 units, with a month-on-month increase of 12.12% and a year-on-year increase of 26.42% [7] - Cumulative sales for the first nine months reached 1.4845 million units, representing a year-on-year growth of 6.57% [7] - The top ten companies in this segment maintained their rankings from the previous month, with Weichai leading the market [8] Market Share Insights - Weichai's market share in the commercial vehicle multi-cylinder diesel engine segment was 21.79%, with cumulative sales of 323,500 units [10] - Yuchai's market share increased significantly to 12.75%, with cumulative sales of 189,300 units, reflecting a year-on-year growth of 49.51% [10] - Other companies like Yunnei Power and Foton Cummins also reported growth in market share and cumulative sales [10]

Core Viewpoint - The domestic internal combustion engine and multi-cylinder diesel engine markets are experiencing significant growth, driven by favorable sales data and government initiatives aimed at stabilizing and promoting the mechanical industry [1][2][6]. Sales Performance - In September 2025, internal combustion engine sales reached 5.069 million units, with a month-on-month increase of 13.97% and a year-on-year increase of 21.14%. Cumulative sales from January to September totaled 39.6696 million units, reflecting a year-on-year growth of 15.73% [1]. - Diesel engine sales in September 2025 were 421,800 units, showing a month-on-month increase of 13.25% and a year-on-year increase of 12.45%. Cumulative sales for the first nine months reached 3.8264 million units, up 5.39% year-on-year [2]. - Multi-cylinder diesel engines sold 340,000 units in September 2025, with a month-on-month increase of 12.51% and a year-on-year increase of 15.42%. Cumulative sales for the first nine months were 3.0959 million units, reflecting a year-on-year growth of 5.58% [6]. Market Dynamics - The commercial vehicle market, closely related to multi-cylinder diesel engines, also showed strong performance in September 2025, with production and sales reaching 376,000 and 368,000 units, respectively, marking increases of 19.3% and 16.3% month-on-month, and 27.7% and 29.6% year-on-year [6]. - The top ten companies in multi-cylinder diesel engine sales accounted for 78.06% of total sales, a slight increase from 77.95% in the previous month [6]. Company Rankings - Weichai Power led the multi-cylinder diesel engine market in September 2025 with sales of 73,300 units, achieving a month-on-month growth of 4.77%. Yuchai Group followed with 41,000 units, and Yunnei Power ranked third with 29,200 units, experiencing a significant month-on-month increase of 30.83% [8][10]. - For the cumulative sales from January to September 2025, Weichai maintained its lead with 573,700 units sold, a year-on-year increase of 1.62%. Yuchai's cumulative sales reached 434,700 units, reflecting a substantial year-on-year growth of 27.08% [10][12]. Future Outlook - The mechanical industry is expected to continue its growth trajectory, supported by government policies aimed at enhancing supply and demand dynamics. Companies are encouraged to explore new market opportunities while navigating challenges such as increased competition and regulatory pressures [1][22].

Core Viewpoint - The domestic internal combustion engine sales in August 2025 reached 4.4476 million units, showing a month-on-month increase of 1.94% and a year-on-year increase of 17.63%, indicating a positive trend in the automotive market driven by macro policies and industry adjustments [1] Summary by Sections Internal Combustion Engine Sales - In August 2025, internal combustion engine sales were 4.4476 million units, with a cumulative sales of 34.6006 million units from January to August, reflecting a year-on-year growth of 14.97% [1] - The commercial vehicle market, particularly multi-cylinder diesel engines, also showed strong performance with sales of 152,000 units in August, marking a month-on-month increase of 9.04% and a year-on-year increase of 11.79% [13] Diesel Engine Sales - Diesel engine sales in August 2025 totaled 372,500 units, with a month-on-month increase of 1.42% and a year-on-year increase of 5.56%. Cumulative sales from January to August reached 3.4046 million units, reflecting a year-on-year growth of 4.57% [2] Multi-Cylinder Diesel Engine Performance - Multi-cylinder diesel engine sales in August reached 306,700 units, with a month-on-month increase of 6.08% and a year-on-year increase of 7.15%. Cumulative sales from January to August were 2.7508 million units, showing a year-on-year growth of 4.47% [4] - The top ten companies in cumulative sales accounted for 77.95% of the total multi-cylinder diesel engine sales, slightly up from 77.85% in the previous month [4] Company Rankings and Performance - Weichai maintained its leading position with sales of 70,000 units in August, achieving a month-on-month growth of 29.88%. Yuchai and Yunnei followed with sales of 41,000 and 22,300 units, respectively [6] - Cumulative sales data for the first eight months showed Weichai at 500,400 units, Yuchai at 393,600 units, and Yunnei at 235,500 units, with respective market shares of 18.19%, 14.31%, and 8.56% [9][11] Commercial Vehicle Multi-Cylinder Diesel Engine Sales - In August, commercial vehicle multi-cylinder diesel engine sales reached 151,000 units, with cumulative sales from January to August at 1.3141 million units, reflecting a year-on-year growth of 4.44% [12] - Weichai led the commercial vehicle multi-cylinder diesel engine market with cumulative sales of 278,100 units, holding a market share of 21.16% [16] Market Outlook - Despite being a traditional off-season, the performance of multi-cylinder diesel engines in August was commendable, with expectations for a strong demand in the upcoming peak season [20]

Core Insights - The sales of diesel engines in China for July 2025 reached 367,200 units, showing a month-on-month decline of 11.39% but a year-on-year increase of 6.68% [1] - Cumulatively, from January to July 2025, diesel engine sales totaled 3.0322 million units, marking a year-on-year growth of 4.45% [1] - The commercial vehicle market experienced a decline in production and sales in July, with production at 298,000 units and sales at 306,000 units, reflecting month-on-month decreases of 15.8% and 17.1%, respectively, but year-on-year increases of 16.3% and 14.1% [1] Diesel Engine Sales Performance - In July 2025, multi-cylinder diesel engine sales were 139,400 units, down 16.71% month-on-month but up 12.84% year-on-year [7] - From January to July 2025, cumulative sales of multi-cylinder diesel engines reached 1.1621 million units, with a year-on-year growth of 3.55% [7] - The top ten companies accounted for 88.26% of total sales, showing a slight decrease compared to the previous period [7] Company Rankings and Performance - Weichai maintained its leading position with July sales of 53,900 units, achieving a month-on-month growth of 17.13% [4] - Yuchai ranked second with sales of 44,600 units, while Anhui Quanchai and Yunnei ranked third and fourth with sales of 21,000 and 19,900 units, respectively [3][4] - Cumulatively, from January to July 2025, Weichai sold 430,400 units, Yuchai 352,700 units, and Yunnei 213,100 units, with market shares of 17.61%, 14.43%, and 8.72%, respectively [6][10] Market Trends - The overall market for multi-cylinder diesel engines showed fluctuations, with most companies experiencing month-on-month declines in July [3] - The cumulative sales growth of leading companies indicates a competitive landscape, with some companies like Yuchai showing significant year-on-year growth [6][10] - The industry is facing challenges such as market saturation and increased competition, prompting companies to innovate and enhance service offerings [3]

Core Viewpoint - The domestic internal combustion engine market in China is showing positive growth trends, with significant year-on-year increases in sales, driven by favorable macroeconomic policies and rising consumer confidence [1][2][6]. Group 1: Internal Combustion Engine Sales - In July 2025, internal combustion engine sales reached 4.354 million units, marking a month-on-month increase of 4.14% and a year-on-year increase of 14.28%. Cumulative sales from January to July totaled 29.6417 million units, reflecting a year-on-year growth of 12.50% [1]. - The multi-cylinder diesel engine market saw July sales of 139,400 units, a month-on-month decline of 16.71% but a year-on-year increase of 12.84%. Cumulative sales for the first seven months reached 1.1621 million units, with a year-on-year growth of 3.55% [14]. Group 2: Diesel Engine Sales - In July 2025, diesel engine sales amounted to 367,200 units, with a month-on-month decrease of 11.39% but a year-on-year increase of 6.68%. Cumulative sales for the first seven months surpassed 3 million units, achieving a year-on-year growth of 4.45% [2]. - The multi-cylinder diesel engine segment recorded cumulative sales of over 2.4441 million units from January to July, reflecting a year-on-year increase of 4.14% [5]. Group 3: Market Performance of Key Companies - Weichai maintained its leading position in the multi-cylinder diesel engine market with July sales of 53,900 units, achieving a month-on-month growth of 17.13%. Cumulative sales for the first seven months reached 430,400 units, with a market share of 17.61% [10][11]. - Yuchai ranked second with cumulative sales of 352,700 units, showing a significant year-on-year growth of 28.90% and a market share of 14.43% [10]. - Yunnei Power and Anhui Quanchai followed, with cumulative sales of 213,100 units and 209,500 units respectively, both showing positive year-on-year growth [10][11]. Group 4: Commercial Vehicle Market - In July 2025, commercial vehicle production and sales were 298,000 units and 306,000 units respectively, with month-on-month declines of 15.8% and 17.1%, but year-on-year increases of 16.3% and 14.1% [6]. - The multi-cylinder diesel engine market for commercial vehicles saw cumulative sales of 1.1621 million units from January to July, reflecting a year-on-year growth of 3.55% [14].