Alternative Fuel Injection System Market Size

The global alternative fuel injection system market size was valued at USD 10.7 billion in 2024 and is estimated to register a CAGR of 5.5% between 2025 and 2034. Natural gas, available as compressed (CNG) and liquefied (LNG), is now a cost-effective and eco-friendly alternative to gasoline and diesel. Its use in fleet vehicles including buses and trucks is increasing the demand for fuel injection systems designed for gas combustion.

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With high energy density and lower greenhouse gas emissions, natural gas is becoming a preferred choice. As a result, innovative injection technologies for natural gas vehicles are being adopted more widely around the world.

Fleet operators including both public and private are focused on adopting CNG buses to combat pollution. For instance, in March 2024, the Maharashtra State Road Transport Corporation (MSRTC), which runs 800 buses in Pune's State Transport (ST) department, took various steps and initiatives to reduce pollution.

MSRTC are converting around 500 old diesel buses to CNG vehicles, with each conversion costing about USD 15,000. The initiative supports the goal of moving to cleaner, eco-friendly transportation. With CNG bus production at the Dapodi workshop and efforts to expand the e-bus fleet, Pune is progressing towards a sustainable public transportation system.

Hydrogen fuel cells are becoming popular as a zero-emission option for cars. Key markets such as Europe, Japan, and the U.S. are investing heavily in hydrogen technology, including systems that control hydrogen delivery at high pressures. This technology is especially in demand for heavy-duty vehicles due to hydrogen's energy efficiency and long-range capabilities. Additionally, automotive manufacturers are also setting goals to launch hydrogen-powered fuel cell electric vehicles (FCEVs) to cut CO2 emissions. For example, in September 2024, BMW Group announced plans to release its first series production hydrogen-powered FCEV by 2028.