How big is the diesel engine market | Size & Forecast 2025

Q: What is the market size of the diesel engine market in 2025 and 2031?

The diesel engine market was projected to reach USD 73.2 billion in 2025 and is expected to grow to approximately USD 98.7 billion by 2031.

Q: What is the CAGR of the diesel engine market between 2025 and 2031?

The diesel engine market is anticipated to grow at a CAGR of 4.70% during the forecast period.

Q: What are the key trends in the diesel engine market?

Key trends include development of hybrid diesel systems, stricter emission norms, digital engine diagnostics, and cleaner fuel technologies.

Q: What are the main drivers of the diesel engine market?

The diesel engine market is driven by rising demand in industrial and heavy equipment sectors, increasing use in power generation, and technological innovations.

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Code: MTA6065

Publication Date: Jul 2025

What is the diesel engine Market Size?

According to 6Wresearch internal database and industry insights, Global diesel engine market was valued atUSD 73.2 billion in 2024 and is anticipated to exceedUSD 98.7 billion by 2031, registering a steady at aCAGR of 4.70% during the forecast period.

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The market is witnessing strong growth due to rising demand for fuel-efficient engines in heavy machinery, commercial vehicles, and power generation. Key factors include expanding infrastructure and industrialization in emerging economies, increasing reliance on diesel power for agriculture and construction, and the integration of advanced emission control technologies. The shift toward hybrid diesel systems and innovations for lower emissions are also driving market expansion.

Major Growth Factors of the Diesel Engine Market

Increasing use in heavy-duty vehicles and equipment
Rising demand for backup power solutions
Rapid industrialization in developing countries
Technological advancements in engine efficiency
Growth in marine and railway applications
Expansion of construction and mining sectors
High energy density and fuel efficiency of diesel
Strong demand in agriculture machinery

Diesel Engine Market Trends

The diesel engine market is undergoing significant transformation with a focus on low-emission, high-performance engines. There's a surge in the development of hybrid and dual-fuel engines, especially in off-highway and marine sectors. Manufacturers are increasingly investing in R&D to meet stringent emission norms while enhancing fuel efficiency and operational lifespan. Additionally, digital monitoring and predictive maintenance systems are becoming integral in modern diesel engine systems.

Emerging Developments in the Diesel Engine Market

The diesel engine market includes the emergence of cleaner diesel technologies aligned with global emission norms such as Euro VI and Tier 4. The market is also seeing collaborations between engine manufacturers and software developers to enable smart engine diagnostics. Furthermore, alternative fuel adaptability and electrification integration are being explored across sectors like transportation, power generation, and agriculture.