Business performance 2025: A solid foundation in a challenging environment
Both the Transportation and Life Sciences & Environment segments experienced slight volume declines during the reporting year, yet gross margins held steady or improved modestly despite the volume shortfall. The Filtration Materials segment generated no external revenue during the reporting year, as it will not reach full operational effectiveness until 2026.
Transportation
Transportation revenues in 2025 came in at €3,762.1 million, a decline of €278.8 million or 6.9% compared to the prior year (€4,041.0 million). A negative currency effect of €142.2 million was a significant contributing factor. On a currency-adjusted basis, the decline was €136.7 million or 3.4%. While Europe and Asia remained largely stable, revenue in the North American aftermarket was notably weaker.
Original Equipment for passenger cars
Revenue in this segment declined modestly year over year when adjusted for currency and one-time effects. Our focus is on high-margin innovations that are seeing growing demand driven by the shift toward electric mobility or new regulatory requirements. We presented these new developments at Auto Shanghai during the reporting year.
The growing cabin air filter segment is benefiting from heightened health awareness and growing recognition of the dangers of air pollution – particularly in Asia. Our cabin air filter portfolio goes well beyond basic pollen filters to include high-performance particulate and gas filters. Our new cabin air filters follow the growing trend toward healthy in-vehicle air: high-performance HEPA filters deliver optimal air quality with "smart" activation – switching on only when needed, thereby preserving battery capacity and extending the range of electric vehicles.
In battery-powered vehicles, thermal runaway events can release harmful gases and particles. We have therefore developed a smoke filter with a degassing unit that already meets future Chinese regulatory requirements today. Electric vehicles also use compressed air systems for air suspension – we supply the filtration technologies for these systems and are well positioned to benefit from the growing market share of battery electric vehicles.
With the New Energy Tech Center, MANN+HUMMEL is investing in the future: it is a long-term research and development center for new mobility technologies that secures our leadership position in electric mobility. We are an established supplier to major European and U.S. automakers and are focused on strengthening that position in the fast-growing Asian markets – particularly China and South Korea.
Europe: Declining passenger car production in Europe led to a modest revenue decline in the OE business, also driven by softening demand for combustion engine vehicles. Product mix optimization and margin stabilization through cost pass-through helped steady results. GM recognized MANN+HUMMEL Czech Republic with the General Motors Supplier Quality Excellence Award for the second consecutive year. The Ministry of Industry of Zenica-Doboj canton in Bosnia and Herzegovina honored our local facility as one of the "Top 5 Exporters". The leading online recruiting and career platform in Bosnia and Herzegovina recognized us as "Employer of First Choice".
Americas: In North America, we achieved significant gains well above general market growth through higher delivery volumes with major customers. In South America, revenue was largely stable. MANN+HUMMEL Brazil was honored with the General Motors Supplier Quality Excellence Award for the third consecutive year.
Asia: The divestiture of the high-performance plastics division in 2022 continued to weigh on revenues in China during the reporting year. Revenue also declined modestly in other Asian markets, largely in line with expectations.
Original Equipment for Heavy Duty
Revenue in this segment grew noticeably in the mid-single-digit percentage range. Alongside conventional diesel technology, we are focused on future drivetrain alternatives including hydrogen combustion engines, fuel cells, and battery-electric systems. This diversification spreads risk and secures the long-term competitiveness of the Heavy Duty segment. We are also proactively addressing anticipated regulatory requirements to reduce fine particulate and tire wear emissions: we are developing filtration solutions for dust and abrasion sources, positioning ourselves as a technology leader in areas that will face tighter environmental standards going forward.
Europe: Despite a challenging market environment, we secured supply contracts with both existing and new customers during the reporting year totaling an annual contract value of €42 million – the strongest order intake in the Heavy Duty sector since we entered the market. Product mix optimization and margin improvements contributed positively to results.
Americas: Weaker demand in heavy-duty segments led to modest revenue declines in North America, driven by economic uncertainty and delayed starts on major projects. Order intake nonetheless reached €6 million from leading manufacturers. John Deere recognized us with its Innovation Award, while Caterpillar honored MANN+HUMMEL with its Supplier Excellence Award. In South America, by contrast, we achieved strong revenue growth. In Brazil, CNH Industrial recognized our performance with the Supplier of the Year Award.
Asia: The Heavy Duty OE market in China recovered during the reporting year. Through additional sales activities, we achieved very strong revenue growth. Order intake in China and other Asian markets reached an annual contract value of €24 million, with China alone accounting for €13 million. Notable wins include a first-ever order for self-cleaning air filters from a leading mining vehicle manufacturer, as well as substantial air filter orders for tractors and combine harvesters. CNHTC recognized MANN+HUMMEL as "Excellent Supplier" for the 16th consecutive year. FAW presented us with the Best Quality Award, and Lovol awarded us the Collaborative Innovation Award. We also recorded strong growth in India.
Original Equipment for industrial applications
Revenue in the OE Industrial segment grew significantly in the high single-digit percentage range during the reporting year. We achieved revenue growth in nearly all regions, with the Americas broadly stable. For use in electrical discharge machining (EDM), we developed a range of filters with a mountain pleat geometry – featuring a filtration surface area more than 10% larger than conventional filters. In the home appliance segment, we successfully acquired several large international customers.
Europe: Despite difficult market conditions, we achieved revenue growth. Product mix optimization and margin improvements contributed positively, as did the renewal of our ScandMist oil mist, smoke, and vapor separator product range. In the rail segment, we significantly expanded our business with a major customer.
Americas: In the United States, we built out production capacity for air-oil separators (AOS) as part of our "Local for Local" initiative. Politically driven uncertainty and general market stagnation weighed on new business development.
Asia: We recorded strong revenue growth in Asia, with our electrostatic precipitator (ESP) portfolio continuing to grow in China. In India, we are focused on developing and manufacturing industrial centrifuges for industrial manufacturing and mobility applications.
Aftermarket
Our aftermarket business remained stable when adjusted for currency effects and the loss of a major customer in North America. While Europe grew modestly in constant currency terms and Asia posted strong gains, North America continues to feel the negative effects of the loss of a major partnership. Through a wide range of innovations and new product introductions, we set clear markers during the reporting year for a profitable future in the aftermarket business. With our "Naturally Better" initiative, we are pursuing a pioneering role in sustainable filtration solutions: bio-based impregnations and sustainable packaging strengthen our MANN-FILTER brand and meet growing demand for environmentally oriented products.
Aftermarket OES – Europe: The OES business delivered modest but solid growth during the reporting year. New business wins are offsetting revenue declines in lower-margin product lines. We were able to increase delivery volumes of air dryer cartridges and spin-on oil filters to two significant OES customers, benefiting from quality issues at a competitor. A long-standing supply agreement with a leading European automaker will also drive additional revenue going forward. A major customer substantially expanded its OES business in motorcycle oil filters.
Aftermarket OES – Americas: During the reporting year, we secured a long-term supply agreement with our largest OES customer, resulting in strong revenue growth. Order volumes in the second and third quarters were elevated due to anticipated tariff increases and resulting precautionary inventory builds – but normalized later in the year as that excess inventory was worked down. In South America, we also recorded revenue growth.
Aftermarket OES – Asia: OES revenue in China and other Asian markets was stable. During the reporting year, we secured three major OES contracts in China with internationally active manufacturers. In South Korea, revenue declined modestly due to reduced spin-on filter delivery volumes to a major customer.
Independent Aftermarket (IAM) – Europe: In Europe, our sales grew at a steady single-digit rate during the reporting year, outperforming the broader European market trend. We opened a new distribution center in Italy, optimizing logistics across Southern Europe – delivering faster lead times, lower logistics costs, and the lowest backorder levels for our customers in many years. At the tenth CLEPA Innovation Award ceremony, we were recognized for our "Naturally Better" initiative, with a focus on the new plant-based MANN-FILTER cellulose filters. Partslife also honored the initiative with the PARTSLIFE Environmental Award in the circular economy category. The €3,000 prize money was donated to the Schutzgemeinschaft Deutscher Wald (German Forest Protection Association). At the Groupauto O2O (Online-to-Offline) Days, the Turkey team received the Supplier of the Year award. The "MANN-FILTER Mamba" celebrated ten successful years in international motorsport. MANN-FILTER won the "Best Brand" reader survey by MOTORSPORT aktuell in the Filter category for the eighth consecutive year. The trade magazine WERKSTATT aktuell recognized MANN-FILTER for the second consecutive year with the WERKSTATT aktuell Award as the best brand in the Filter category, receiving 44.1% of votes. The German Design Council honored MANN-FILTER with the German Brand Award for its new packaging design.
Independent Aftermarket (IAM) – Americas: Revenue fluctuations throughout the reporting year reflected the persistent uncertainty in North America. We improved our logistics performance compared to prior years, but these measures were not sufficient to fully offset the volume loss from a major customer. The result was a double-digit revenue decline in North America. We have, however, taken steps to return to growth: a new Purolator product line was introduced. The Aftermarket Auto Parts Alliance honored MANN+HUMMEL with the Supplier Award for Outstanding Shipping Performance for WIX Filters. In Latin America, our growth continued – particularly in Brazil, where we achieved double-digit gains. In Brazil, MANN-FILTER received the Sindirepa Award 2025 in Silver and first place in the Everest Awards 2025 by BR Autoparts.
Independent Aftermarket (IAM) – Asia: In China, partnerships with major online distributors drove rapid and substantial double-digit growth. A strategic partnership with a large workshop chain in Indonesia, a successful tender win with a major mining company, and the introduction of more than 130 products for the off-highway and industrial segment supported modest growth.
Independent Aftermarket (IAM) – Africa: In South Africa, we opened a new production facility. It serves as a strategic hub for the sub-Saharan market, reducing transportation costs and minimizing exposure to global supply chain vulnerabilities.
Life Sciences & Environment
Revenue in the reporting year declined by 4.3% on a currency-adjusted basis to €452.8 million. Market conditions were particularly challenging in Asia, while we recorded growth in the Americas. Standardization of payment terms and successful negotiations to shorten payment periods led to improved liquidity. The Water and Membrane Solutions segment also received €9.5 million in subsidies as well as an additional €8 million loan from the Italian government.
Air Filtration
Air Filtration revenue declined modestly in the low single-digit percentage range during the reporting year. While revenue in Europe held steady and the Americas business actually grew, sales in Asia dropped noticeably due to restrained demand from several large customers. We are prioritizing investment and resources in areas with the highest growth potential and are also engaged in publicly funded projects. During the reporting year, we streamlined our production facilities to sharpen focus, improve product quality, and increase manufacturing efficiency. This organizational consolidation enables us to deliver even greater value across industries: in healthcare, our EPA, HEPA, and ULPA filter solutions meet the highest quality standards; in data centers, we work with distributors to maximize operational efficiency.
Innovation is the clearest proof of this strategy. Products such as the Airpocket Eco Shortlength A+ and the Ultra Synthetic Nano Bag Filter set new benchmarks in sustainability and energy efficiency. With our new product range without added PFAS, developed in close collaboration with suppliers, we are opening the next chapter in sustainable filtration.
Europe: Revenue in Europe declined modestly. Buildings account for 40% of total EU energy consumption and 36% of CO₂ emissions, with HVAC systems contributing 16% of that total. Our air filtration solutions therefore help improve the environmental footprint of the built environment. We made further improvements across all areas – with a leaner portfolio, a clearer brand message, and integrated campaigns spanning marketing, sales, and customer service. The launch of a dedicated B2B online shop for air filtration is increasing customer engagement and driving more efficient processes. The Bundesverband Marketing Clubs Deutschland presented MANN+HUMMEL and advertising agency WOB with the BOB Award in Silver in the Cross-Media Communication category for the "Knowing What Counts" campaign. The campaign also won the German Online Communication Award (DPOK) and the Annual Multimedia Award in Silver.
Americas: In the United States, we continued to expand our market presence and strengthen our distribution partner network, with revenue growing modestly during the reporting year. Filter solutions in the highest filter classes, meeting the most stringent ASHRAE and ISO standards, are strengthening our offering in heavily regulated applications. Our data center revenue grew 30% in fiscal year 2025 – and we expect further gains ahead. In data centers, filtration directly impacts energy consumption, uptime, equipment lifespan, and total cost of ownership.
Asia: We continued to advance the integration of U-Air, our Chinese air filtration specialist. Revenue in Asia declined sharply, however – primarily due to falling delivery volumes to major customers and aggressive price competition. General uncertainty stemming from tariff conflicts also played a significant role. We view these difficult conditions as a temporary phenomenon, as the business potential in China, India, and other Asian markets remains compelling. Through a new partnership, we are targeting new segments such as data centers.
Water & Membrane Solutions
Revenue in the Water & Membrane Solutions segment declined in the low single-digit percentage range during the reporting year. While the Americas region achieved double-digit growth, this was offset by revenue declines in Europe and Asia. We have identified several strategic priorities to support future growth – including a stronger focus on spiral wound water membranes, spiral wound process membranes, and ultrafiltration solutions. In Europe, we initiated product offering improvements to strengthen price competitiveness. At the same time, we implemented structural improvements to enhance profitability, including the restructuring of our membrane bioreactor (MBR) business. To accelerate market penetration in strategic growth regions – particularly in low- and middle-income countries – we began building partnerships with strong local players in markets such as India and North Africa.
During the reporting year, we introduced AquaPro, a membrane system design software with an intuitive user interface that enables the design of reverse osmosis (RO), nanofiltration (NF), and ultrafiltration (UF) membrane systems. Users can simulate realistic operating scenarios, optimize system performance, and access our full RO/NF/UF membrane portfolio. AquaPro strengthens customer engagement and supports revenue growth by positioning our products as the preferred choice. Over the course of the year, we published two new case studies on wastewater reuse in textile production and introduced a new ultrafiltration membrane for improved protein separation in dairy processing, featuring a new 10 kDa membrane.
Filtration Materials
We created the new Filtration Materials segment to take direct control of and further develop the core of filtration – the filter media itself. This reduces dependence on external suppliers and keeps critical technological know-how in-house, at the very heart of what we do – filtration solutions. With this step, and the segment's full operational effectiveness taking effect in 2026, we are making a clear commitment to proprietary materials as our key differentiator. In this area, we are already leveraging artificial intelligence and simulation to dramatically shorten the development cycles for filtration materials – securing our technological edge and bringing products to market readiness significantly faster.
Want to learn more? Our 2025 Annual Report is packed with additional insights and information. Or reach out if you have questions or would like to speak with us.