Off Highway Vehicle Engine Market Size & Share Analysis - Growth Trends and Forecast (2026 - 2031)

Global Off Highway Vehicle Engine Market Trends and Insights

Massive Global Infrastructure Pipeline (G7 and BRI)

Global initiatives, such as the G7 Partnership for Global Infrastructure and Investment and China's Belt and Road Initiative, are driving significant investments into roads, ports, and energy assets. These investments are creating substantial demand for heavy machinery in infrastructure projects. Canada's federal budget for the near future highlights a strong focus on transport and green-energy development, further underscoring the need for equipment such as crawler excavators and motor graders. Additionally, host nations often implement EU-style emissions regulations a few years after project completion. This trend benefits engine manufacturers with modular Stage V lines, enabling them to secure both initial equipment sales and subsequent retrofitting opportunities. Suppliers who strategically design components to meet these requirements are positioned to achieve higher lifetime revenue per engine. Historical trends confirm a strong correlation between infrastructure spending and construction equipment utilization, reinforcing the growth potential of the off-highway vehicle engine market.

Growing Mechanization of Agriculture in Asia-Pacific and Africa

In fiscal 2025, Indian farm-equipment credit disbursements experienced significant growth, driven by subsidies that substantially reduce the cost of new tractors. While Europe maintains a high density of tractors per hectare, Sub-Saharan Africa continues to operate at a much lower level, highlighting a considerable opportunity for replacement. In 2024, China's agricultural machinery production saw notable progress, with domestic manufacturers focusing on tractors designed for smallholder farms, equipped with engines suitable for their needs. Large commercial farms in Brazil and Australia favor 120-400 horsepower units with precision guidance, whereas Asian and African growers seek sub-50 horsepower designs financed over seven years, forcing engine builders to regionalize product lines. The bifurcated demand pattern sustains volume growth for compact diesels while supporting margin-rich high-horsepower models.

Stricter Stage V / Tier 5 Norms Triggering Pre-Buy and Retrofit Cycles

Compliance enforcement and fleet policies are increasing the focus on Stage V/Tier 4 Final compliant equipment. Meanwhile, California's proposed Tier 5 regulation aims to significantly reduce nitrogen oxides by the end of the decade. This has encouraged North American fleets to increase their procurement of Tier 4. However, rental companies, which represent a substantial portion of the fleet in the United States, are focusing on retrofitting diesel particulate filters and SCR kits rather than investing in new machinery, thereby extending the operational lifespan of their assets by several years. After-treatment suppliers, such as Donaldson and Dinex, therefore stand to gain recurring retrofit revenue even as new-unit growth moderates. The retrofit dynamic tempers headline sales volatility for the off-highway vehicle engine market while pushing a larger share of revenue into the aftermarket channel.

OEM Shift to Modular Hybrid-Ready Engine Platforms

Cummins offers B4.5 and B6.7 Stage V blocks with factory provisions for 48-volt battery packs so customers can add hybrid kits without chassis changes ^{[1]“Product Press Kit 2024,” Cummins, cummins.com}. Deutz unveiled a hydrogen-ready engine that shares most of its components with its diesel version, allowing factories to switch fuel types with minimal adjustments. This modular design reduces capital investment for OEMs compared to standalone electric platforms. However, it may face challenges if battery costs decline significantly in the coming years. As a result, hybrid readiness acts as a temporary strategy rather than a long-term solution for the off-highway vehicle engine sector.

Accelerating Electrification of Compact Equipment

Volvo CE’s ECR25 Electric excavator offers a full workday of runtime and significantly reduces diesel costs, enabling high-utilization contractors to achieve a return on investment within a reasonable timeframe. JCB’s 19C-1E and Caterpillar’s 301.9 electric minis provide comparable economic benefits for indoor or urban projects where zero emissions and low noise are critical. Battery-electric models are steadily gaining traction in Europe's sub-6-ton excavator market, with expectations of substantial growth as charging infrastructure continues to expand. The lower maintenance requirements, which eliminate oil changes and reduce the number of moving parts, further enhance the cost-effectiveness of battery-powered compact excavators. However, this shift primarily impacts smaller engines, while mid- and high-horsepower diesel engines remain largely unaffected for now.

Escalating After-Treatment Cost Vs. Price-Sensitive Buyers

Stage V kits significantly increase the cost of 100-150 horsepower engines, adding a notable percentage to the list price. Additionally, machines operating extensively incur substantial annual expenses for diesel exhaust fluid. In regions such as India and Southeast Asia, where buyers often include small contractors or individual farmers, these additional costs drive demand for older Tier 3 equipment available in secondary markets. In 2024, Mahindra reported that a considerable portion of its Indian tractor customers preferred models without advanced emission systems to reduce upfront costs. This persistent price sensitivity slows the adoption of emissions upgrades, limiting short-term growth in the off-highway vehicle engine market. It also creates opportunities for local suppliers to offer lower-specification products at more competitive prices than global players.

*Our forecasts treat driver/restraint impacts as directional, not additive. The impact forecasts reflect baseline growth, mix effects, and variable interactions.

Segment Analysis

By Vehicle Type: Construction Dominates, Mining Accelerates

Construction machinery accounted for 59.04% of 2025 revenue, underscoring its dominance within the off-highway vehicle engine market size. Urbanization across Asia and stimulus-backed infrastructure renewal in the United States and the EU keep crawler excavators, wheel loaders, and backhoe loaders on high utilization schedules. Mining equipment, although smaller in volume, is the fastest riser; its 8.33% forecast CAGR aligns with the soaring demand for copper and lithium in EV supply chains, which require autonomous haul trucks and high-tonnage hydraulic shovels capable of operating for 4,000-5,000 hours per year. Agricultural machinery ranks second overall, with tractor density in Africa poised for multi-decade growth. At the same time, forestry and material-handling niches rely on diesel’s high energy density for remote or continuous-shift operations.

Recurring construction replacement every 7-10 years locks in a dependable baseline volume for engine suppliers, whereas the 12-15 year mining cycle produces a richer aftermarket parts annuity due to higher duty hours. Global OEMs dominate the construction sector but face regional fragmentation in agriculture, where Mahindra leads in India, Deere rules North America, and Weichai powers much of China. This mosaic makes scale economies elusive, yet it also protects specialized players that tailor engines to local regulation and fuel quality.

By Power Output: Mid-Range Engines Command Volume and Growth

The 31-70 horsepower bracket accounted for 65.18% of unit shipments in 2025 and is projected to expand at an 8.12% CAGR through 2031, underscoring its importance to the off-highway vehicle engine market. Compact tractors, skid-steer loaders, and mini excavators dominate this band, benefiting from subsidy programs that target smallholders and urban contractors. Kubota’s V5009 Stage V series exemplifies platform renewal, integrating maintenance-free particulate filters and variable-geometry turbochargers to meet both emissions and fuel-efficiency goals ^{[2]“V5009 Engine Brochure,” Kubota, kubota.com}.

Sub-30-horsepower engines power utility vehicles where batteries are already encroaching, while the 71-120-horsepower set serves mid-sized wheel and backhoe loaders. Units above 120 horsepower, although fewer in number, generate premium pricing and aftermarket revenue due to their demanding duty cycles in mining and large infrastructure projects. Suppliers with flexible architectures that span 31-120 horsepower, such as Yanmar and FPT Industrial, amortize R&D costs across volumes exceeding 50,000 units per year, a scale that is unreachable in the 400-horsepower-and-above niche.

By Fuel Type: Diesel Dominance Persists, Alternatives Emerge

Diesel owned 88.33% of the 2025 fuel mix, confirming its lock-in position within the off-highway vehicle engine market share. Its 35-38 MJ L-1 energy density and universal refueling infrastructure keep the total cost of ownership low for remote, high-load applications. Hybrid-electric and hydrogen variants together are projected to grow at a 6.95% CAGR through 2031, although they start from a small base. Volvo Penta’s D5 hybrid and Deutz’s H2 engine demonstrate technical feasibility, yet they face infrastructure and cost hurdles ^{[3]“Hybrid Solutions White Paper,” Volvo Penta, volvopenta.com}.

Gasoline and natural gas retain a marginal status, applicable mainly to stationary or light-duty applications. HVO’s plug-and-play compatibility extends the relevance of diesel, especially in Europe, where carbon pricing mitigates the cost premium. The consensus view now predicts that diesel will drop to a comparatively lower share in the next five years, rather than undergo a rapid phase-out, ensuring that every OEM must still invest in clean-diesel evolution, even while incubating electric and hydrogen lines.

By Engine Displacement: Mid-Size Dominates, Compact Grows Fastest

Engines between 3.6 and 7 liters captured 47.25% of 2025 revenue, benefiting from their fit with articulated dump trucks, mid-sized wheel loaders, and 90-140 horsepower tractors. Downsized blocks below 2 liters, however, are the growth champions, with a 7.48% CAGR, as hybrid architectures pair small diesels with electric assist, cutting fuel use without sacrificing torque. Deutz’s TCD 2.9, for instance, delivers up to 100 horsepower from a 2.9-liter package by adopting high peak cylinder pressures.

Engines above 7 liters cater to large mining equipment and high-horsepower dozers, a niche with limited volume but substantial margins. Turbocharging and direct-injection advances blur the historical link between displacement and power, allowing OEMs to meet output targets with lighter, more efficient engines. The trade-off is higher thermal stress, which shortens lubricant life, thereby shifting some savings from fuel to maintenance budgets.

By Propulsion Technology: ICE Leads, Battery-Electric Accelerates

Internal-combustion engines held 88.41% of 2025 shipments, yet battery-electric powertrains are clocking a 7.86% CAGR as charging stations spread across urban job sites. Hybrid systems occupy a middle ground, recapturing braking energy in duty cycles featuring frequent bucket dumps or travel between loads. Fuel-cell solutions capture a nominal share but may gain momentum where hydrogen production is co-located with mining or port operations.

Technology fragmentation will persist: battery packs dominate sub-6-ton machines, hybrids optimize medium excavators, and diesel or hydrogen combustion rules high-horsepower classes. OEMs able to service all three paths—Caterpillar, Komatsu, Volvo CE—stand to gain disproportionate customer stickiness as fleets diversify to meet both emissions and uptime targets.

Geography Analysis

Asia-Pacific controlled 39.12% of the off-highway vehicle engine market in 2025 and is expected to advance at a notable CAGR to 2031. China’s domestic construction boom and India’s significant jump in farm-equipment credit underscore the region’s dual growth engines. Japanese shipments softened, but exporters recouped volume in Southeast Asia, where Belt and Road projects remain active. South Korea’s HX Series excavators, fitted with Stage V engines, target Europe and North America, reflecting Asian OEMs’ push up the value curve.

Europe is the fastest-growing region, with a 7.23% CAGR, driven by Stage V retrofits and HVO adoption. Germany’s rail and renewable program keeps demand steady for mid-sized engines, while France’s precision-farming incentives lift tractor penetration. Post-Brexit trade deals widen export lanes for engine builders in the United Kingdom, like Perkins. Western sanctions curtail Russian demand for high-spec engines, allowing Chinese Tier 3 units to backfill the gap.

North America held a notable share of 2025 turnover, underpinned by the Infrastructure Investment and Jobs Act. In the United States, housing starts reached a significant milestone, driving increased demand for compact equipment. Meanwhile, Canada's extensive green-infrastructure initiative has stimulated purchases of crawlers and graders. In South America, market growth is supported by agricultural expansion in Brazil, particularly in soybean production, which boosts the need for high-horsepower tractors. The Middle East and Africa are experiencing steady growth, driven by large-scale development projects under Saudi Vision 2030 and equipment replacements in South African mines, although the market remains relatively smaller in size.

Regulatory Landscape

Emissions compliance continues to shape off-highway engine specifications and certification costs across major regions. In the United States, fleets and OEMs align with U.S. EPA nonroad compression-ignition requirements (Tier 4 Final), while California adds a second layer of compliance via CARB. Amendments related to California state nonroad engine pollution control standards for in-use off-road diesel-fueled fleets were formalized in January 2025, with phase-in provisions extending through 2036. CARB held a public workshop in February 2026 to discuss draft amendments for potential new off-road diesel engine emission standards, including updates to on-board diagnostics.

In Europe, EU Stage V remains the core framework under Regulation (EU) 2016/1628, with added administrative requirements for machinery that circulates on public roads. Regulation (EU) 2025/14 (adopted in December 2024) set rules for approval and market surveillance of non-road mobile machinery (NRMM) circulating on public roads, strengthening cross-border compliance expectations for OEMs and engine suppliers. Separately, the Netherlands published May 2026 research benchmarking real-world NRMM emissions using a dataset of about 90 mobile machines. This points to policy workstreams examining requirements beyond Stage V, even though no Stage VI standard has been enacted in that jurisdiction.

Value Chain Analysis

The off-highway vehicle engine value chain runs from raw materials and precision components through engine assembly and OEM machine integration, and then into service parts and aftertreatment maintenance in the installed base. Upstream, tier suppliers provide emission- and performance-critical subsystems such as high-pressure fuel systems, turbochargers, electronic control modules, and exhaust aftertreatment (DOC/DPF/SCR). Midstream, engine makers, including vertically integrated equipment OEMs and independent engine suppliers, conduct calibration, emissions certification, and end-of-line testing before shipping engines to construction, agricultural, mining, forestry, and material-handling OEM assembly lines.

Regulatory complexity (EU Stage V and U.S. EPA nonroad rules, plus evolving CARB activity) increases dependence on specialized aftertreatment and controls content, which lifts the role of emissions-component suppliers and software calibration capabilities in the overall cost stack. Downstream, dealer networks and fleet service providers capture recurring revenue from filters, sensors, DEF-related consumables, and repair events, while telematics ecosystems used by major OEMs strengthen parts pull-through and retention. Supply continuity for emissions-critical components remains a sensitivity point because compliant builds require synchronized availability of sensors, electronic modules, and aftertreatment hardware to avoid production interruptions.

Market Opportunities and Future Outlook

A whitespace is forming around fuel-flexible and renewable-fuel-compatible industrial engines that reduce integration friction for equipment OEMs while staying within tightening emissions constraints. At CONEXPO-CON/AGG 2026, John Deere introduced JD5 (5.0L) and JD8 (7.5L) industrial engines positioned for renewable diesel and biodiesel compatibility, supporting fleets that want lower-carbon liquid fuels without changing refueling logistics. In parallel, Kawasaki Engines launched production-ready GEOTORQ large spark-ignition engines designed for gasoline and E85 flex-fuel use in construction and agriculture, expanding the addressable market for non-diesel pathways where duty cycles and site fueling allow.

Another opportunity centers on compliance-driven upgrades in controls and aftertreatment that prepare platforms for stricter state-level or regional requirements. CARB continued moving its Tier 5 rulemaking work forward through draft activity and workshops, including February 2026 discussion of potential new off-road diesel standards and on-board diagnostics. That progression increases demand for engines and machine packages that can demonstrate low-load and in-use performance through robust OBD, sensors, and calibrated inducement strategies. Targeted electrification and hybridization in compact and specialized applications also creates room for suppliers that can provide drop-in power modules or hybrid-ready architectures while keeping diesel as the revenue backbone for mid- and high-horsepower equipment; Honda expanded its eGX electric power unit line with three high-output models announced for OEM supply starting in fall 2026, reflecting the OEM push toward packaged electrified power options in smaller power bands.