Automotive Diesel Exhaust Fluid Market Report 2026

The automotive diesel exhaust fluid market size has grown strongly in recent years. It will grow from $32.01 billion in 2025 to $35.16 billion in 2026 at a compound annual growth rate (CAGR) of 9.8%. The growth in the historic period can be attributed to emission regulation enforcement, diesel vehicle dominance in freight, scr technology adoption, commercial fleet expansion, urea supply availability.

The automotive diesel exhaust fluid market size is expected to see strong growth in the next few years. It will grow to $50.57 billion in 2030 at a compound annual growth rate (CAGR) of 9.5%. The growth in the forecast period can be attributed to stricter emission standards, growth in heavy-duty logistics, demand for low-emission diesel engines, cold climate def innovation, fleet efficiency optimization. Major trends in the forecast period include growth in SCR system adoption, expansion of def consumption in commercial fleets, premium and low-temperature def formulations, automated def dispensing systems, growth of bulk def distribution.

The increasing number of diesel-powered vehicles is anticipated to drive the growth of the automotive diesel exhaust fluid (DEF) market in the coming years. Diesel-powered vehicles use engines where fuel ignites due to the high temperature generated by air compression within the engine's cylinders. The rise in diesel-powered vehicles is attributed to their higher fuel efficiency, robust torque output, and advancements in emissions technologies, making them especially beneficial for commercial, industrial, and heavy-duty uses. Automotive DEF plays a key role in helping these vehicles reduce harmful NOx emissions, ensuring compliance with environmental standards while maintaining engine performance. For example, a report from the Bureau of Infrastructure and Transport Research Economics, an Australian professional non-governmental organization, revealed that as of January 31, 2023, there were approximately 6 million diesel-powered vehicles registered in Australia, a 5.3% increase from the previous year. As a result, the rising number of diesel-powered vehicles is boosting the automotive DEF market.

Leading companies in the automotive diesel exhaust fluid market are expanding their DEF product offerings, including anti-crystal additive concentrates, to enhance vehicle efficiency and meet stricter emissions standards. An anti-crystal additive concentrate is a specialized additive in diesel exhaust fluid (DEF) that prevents the formation of crystals, which can clog or damage the exhaust system. For instance, in March 2024, Liqui Moly GmbH, a Germany-based lubricant manufacturer, launched a new DEF anti-crystal additive concentrate for AdBlue. This product is designed to improve diesel engine efficiency while ensuring compliance with nitrogen oxide emission standards. It can be added directly to the AdBlue tank, providing a convenient way for vehicle owners to maintain the efficiency and longevity of their exhaust gas treatment systems. The concentrate helps prevent urea crystal formation and deposits that could block the AdBlue system, causing engine problems, and lowers the freezing point of the solution to around -16°C to protect against freezing in cold weather.

In March 2023, Saudi Aramco, a petroleum refinery company based in Saudi Arabia, acquired Valvoline Inc. for $2.65 billion. This acquisition supports Aramco's strategy to become a leading player in the integrated branded lubricants market, strengthening its presence in the premium sector and utilizing its production and R&D capabilities for future growth. Valvoline Inc., a US-based manufacturer, produces automotive maintenance products, including automotive diesel exhaust fluids.

Major companies operating in the automotive diesel exhaust fluid market report include Shell plc, TotalEnergies SE, BP plc, ENI S.p.A., BASF SE, ZF Friedrichshafen AG, Air Liquide S.A., Cummins Inc., Yara International ASA, Brenntag SE, Parker Hannifin Corporation, Sinopec Limited, CF Industries Holdings Inc., Graco Inc., Novax Chemicals Ltd., RelaDyne LLC, Safety-Kleen Systems Inc., Old World Industries LLC, Recochem Inc., Kost USA Inc., GreenChem Solutions Limited, Transasia Petrochem Private Limited.

Asia-Pacific was the largest region in the automotive diesel exhaust fluid market in 2025. North America is expected to be the fastest-growing region in the forecast period. The regions covered in the automotive diesel exhaust fluid market report include Asia-Pacific, South East Asia, Western Europe, Eastern Europe, North America, South America, Middle East, Africa. The countries covered in the automotive diesel exhaust fluid market report include Australia, Brazil, China, France, Germany, India, Indonesia, Japan, Taiwan, Russia, South Korea, UK, USA, Canada, Italy, Spain.

The automotive diesel exhaust fluid market consists of sales of DEF quality testing kits, DEF injectors and SCR system components, DEF heaters, DEF fill caps and adapters, and DEF additives. Values in this market are ‘factory gate’ values, that is, the value of goods sold by the manufacturers or creators of the goods, whether to other entities (including downstream manufacturers, wholesalers, distributors, and retailers) or directly to end customers. The value of goods in this market includes related services sold by the creators of the goods.

The market value is defined as the revenues that enterprises gain from the sale of goods and/or services within the specified market and geography through sales, grants, or donations in terms of the currency (in USD unless otherwise specified).

The revenues for a specified geography are consumption values that are revenues generated by organizations in the specified geography within the market, irrespective of where they are produced. It does not include revenues from resales along the supply chain, either further along the supply chain or as part of other products.

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