Freshly delivered and already in service: two new waste collection vehicles from STUMMER are now reinforcing the waste disposal fleet at Vienna Airport. With state-of-the-art technology, high payloads, and a clear focus on efficiency and sustainability, the vehicles are ideally equipped for daily use at one of Europe’s largest airports.

Amidst the hum of jet engines and the rumble of rolling suitcases, a new dynamic duo is quietly stepping up operations behind the scenes at Vienna Airport. Two brand-new STUMMER MEDIUM X4s have joined the lineup—bringing cutting-edge waste logistics straight to the runway. With advanced technology, smart energy management, and impressive payload capacity, these vehicles show how efficient and sustainable waste collection can be—even in high-intensity, 24/7 environments like an international airport

Built on the trusted Mercedes-Benz Econic 6×2 chassis, the trucks feature a trailing axle and a compact wheelbase (12.8 + 4.4 feet), perfectly suited for narrow lanes and the tough demands of airport operations.

The latest STUMMER MEDIUM X4 body is equipped with a beam lifter compatible with container sizes from 60 to 1100 liters (in line with EN standards) and a spacious 22 m³ collection box. Thanks to an integrated compaction system delivering a 1:5 ratio, the vehicles are ideal for efficient residual waste collection.

Smarter Collection, Higher Capacity

A standout feature: a newly developed payload optimization system that allows recyclables—like cardboard, paper, and plastic—to be compacted more efficiently. The result? Up to 25% more payload capacity, all while reducing working pressure from 230 bar (3300 psi) to just 130 bar (1900 psi). That translates into lower energy consumption, reduced fuel use, and a smaller environmental footprint—without compromising performance.

A 25-Year Partnership Still Going Strong

STUMMER and Vienna Airport have built more than just trucks over the past 25 years—they’ve built trust. This long-standing partnership continues to thrive, based on mutual respect and shared standards of excellence.

Two older STUMMER MEDIUM XL models, also built on Mercedes-Benz Econic chassis, have already been in service at the airport and continue to prove their durability and performance day in and day out.

“Our partnership with Vienna Airport has been going strong for 25 years, and we’re proud to support such a high-demand operation,” says Johann Streif, CEO at STUMMER. “Selling a vehicle is one thing—but keeping it running smoothly under heavy daily use is the real challenge. That’s where our commitment truly shows.”

Built to Perform, Engineered to Last

This latest delivery reinforces STUMMER’s position as a reliable partner for customers with demanding operations. These trucks are modern, eco-conscious, and highly efficient—exactly what today’s waste logistics call for. And as for Vienna Airport? By continuing to count on STUMMER, it’s once again underscoring the long-term value of quality and partnership.

Zellinger GmbH, a specialist in waste disposal and recycling based in Upper Austria, put its first fully electric trucks into operation in May 2025. This makes the company one of the industry’s pioneers when it comes to e-mobility in heavy goods transport. While others are still hesitating, the company is already driving emission-free – and with enthusiasm.

The family-owned company from Walding has been active in waste management, transport, and excavation for over four generations—and has been a loyal STUMMER customer, driven by heart, mind, and a strong sense of sustainability, since the 1980s. Today, nearly 30 STUMMER compactor bodies are in operation at Zellinger, including 17 of the iconic X4 models—true benchmarks in modern waste disposal.

Now, with the delivery of four brand-new STUMMER vehicles, Zellinger is taking another decisive step toward zero-emission waste collection. The future doesn’t roar—it hums quietly.
“Electrifying our fleet is a logical step toward decarbonization,” says Managing Director Jürgen Humer-Zellinger. “We’re not just looking to meet legal standards; we want to take real responsibility—both ecologically and economically.”

All-Electric Powerhouses
The new fleet includes four Medium X4 bodies with ZK 2322 lifters, mounted on fully electric Mercedes-Benz eActros chassis. Three are robust 3-axle trucks, while one is a compact 2-axle version—a perfect balance of power and maneuverability. The difference? Just the volume of the 2-axle truck. The body and lifter remain identical across all four—STUMMER quality, through and through.

With over 130 employees, this long-established company now boasts what is likely the greenest fleet in Upper Austria. In fact, Zellinger currently operates the region’s largest electric-powered fleet featuring the X4/Delta automatic system—a powerful statement for sustainable waste management.

Powering the Future—Independently

One more unique aspect: Zellinger’s electric vehicles don’t rely on just any power source—they run on 100% self-generated electricity. Zellinger is the first and, so far, only waste disposal company in Upper Austria to power its electric fleet using energy derived from its own biogenic waste. At its in-house biogas plant, organic waste is converted into electricity, heat, and liquid fertilizer for agricultural use.

The new e-trucks are primarily used for municipal collection routes and offer a range of up to 300 kilometers per charge. They also meet the highest safety standards currently available, equipped with state-of-the-art assistance systems, including turning assistants to protect pedestrians and cyclists, emergency braking systems, and rear-view cameras.

“Introducing e-trucks is part of our comprehensive sustainability strategy,” explains Jürgen Humer-Zellinger. “We’re already focusing on smart waste management, digital route planning, and energy-efficient operations. Looking ahead, we’re also exploring additional alternative drivetrains such as HVO100 and hydrogen.”

More Than Just Machines: A Shared Vision

STUMMER and Zellinger share a partnership that spans more than four decades—a relationship built not only on horsepower and payload but also on shared values: quality, innovation, and a forward-thinking approach to waste management. It’s this spirit of collaboration that continues to drive both companies toward a cleaner, more sustainable future.

Picture credits: Zellinger GmbH

If you are enthusiastic about technology and want to be part of a clean future, STUMMER is the right place for you! More than 900 pupils attended the i-star job fair to find out about job profiles in technical training companies.

Large crowds and pure enthusiasm for innovative technologies for the benefit of a clean environment: around 900 interested pupils and their teachers came to the i-star job fair in St. Johann to talk to STUMMER about a future and career opportunities in waste management. These are the professionals of tomorrow – the greater the joy at the genuine interest and the successful performance.

The local i-star trade fair is primarily aimed at school pupils who want to get to know technical training companies. Together with 13 other leading companies from the Pongau region, STUMMER was able to give them an insight into the world of work and show them what it means to be part of such an innovative company.

“Picking up the skilled workers and professionals of tomorrow and getting them excited about the future of waste management with all its prospects was right at the top of our agenda. Mission accomplished!”, says Andreas Reiter, responsible for the apprentices at STUMMER. “A big thank you to our apprentice Aid Cosic, who spoke on stage about his apprenticeship as a vehicle construction technician and the opportunities at STUMMER. His authentic insights aroused many people’s curiosity and showed how diverse the opportunities are with us.”

During the subsequent tour of the workshop, the young, technology-loving visitors couldn’t stop being amazed. The pupils experienced live and on site where the waste collection vehicles are made and what innovation in vehicle construction looks like in concrete terms. It quickly became clear that if you are enthusiastic about technology and want to be part of a clean future, STUMMER is the right place for you!

Afterwards, various talks on topics such as “Girls in technology” and “Career after the apprenticeship” continued to be informative. Operations manager Robert Streif: “We are thrilled with the many interesting discussions and were particularly pleased with the rush in the evening when more potential apprentices visited us with their parents at the JO Kultur- und Kongresszentrum St. Johann.”

STUMMER made a real star appearance at the i-star job fair with a view to young talent and the skilled workers of the future.There is already no doubt that the company would also like to address pupils in the Pongau region in this way in 2025.

For around 6 months now, twelve new STUMMER vehicles have been on the road for Brantner green solutions – customised to meet the needs of the Krems-based waste management company’s circular economy.

Twelve vehicles in 24 months – we can easily manage that anyway! But the STUMMER team is a little proud of these. Because the MEDIUM XL and X4 for Brantner green solutions are by no means off-the-shelf products. “We customised them to meet Brantner’s individual needs,” explains STUMMER Production Manager Robert Streif. In general, the collaboration with Brantner has been a very fruitful one for years and is characterised by an ongoing exchange of experience and many reciprocal impulses.

Brantner green solution has now expanded and modernised its fleet with the collection heroes for a wide variety of applications. The delivered fleet includes two-, three- and four-axle vehicles with different types of containers: from 120-litre containers to 7-cubic metre skip containers, but also a beam container for hand loading of bags as well as vehicles with ZOELLER Delta automatic lifters, which empty 2-wheel containers particularly efficiently.

Laser without show, but with a lasting effect

Our laser-controlled payload optimisation system is an eco-hero in a class of its own. In all MEDIUM X2 and X4 of the new generation, it controls the discharge wall and regulates the pressure. The result: ideal, homogeneous compaction of the collected recyclables. The ejection plate is readjusted with every load. This means that the payload can be increased by 20 per cent when collecting fractions such as plastic and lightweight packaging. At the same time, the hydraulic pressure for compaction has been reduced by 30 per cent. This is not only much more economical, but also more ecological. The higher payload means that fewer collection journeys are needed to cover a disposal area, which also reduces CO₂ emissions and fuel consumption. Robert Streif: “That pleases us, the waste disposal company, the customers and especially the environment.”

Exciting encounters and discussions, lots of innovations, a great atmosphere – that’s why IFAT 2024 was a complete success for us! We were thrilled to see how well attended the trade fair was again and how much interest there was in future-oriented topics at our stand – for example, the use of artificial intelligence in the waste disposal industry and alternative drives. This confirms our commitment and motivates us to continue shaping progress and innovation!

The new stars in the product portfolio
We were particularly pleased with the positive feedback on our new products. The MAGNUM X1 impressed across the board. Thanks to the many useful features that could be adopted from the X2 and X4 medium and the fundamental idea of standardisation. This is because many components and systems have been standardised, which will make training, service and spare parts supply much easier in the future!

The new MINI can also be emphasised as another product highlight. The new smooth-walled design of the small refuse collection vehicle was extremely well received by visitors. The switch to ZOELLER’s Italian subsidiary FARID Industries was warmly welcomed. Sven Walter, Head of Internal Sales, explains why: “Our Italian colleagues are leaders in the field of particularly small vehicles – no wonder given the narrow alleyways in the various old towns! They therefore bring valuable expertise and a high level of competence for the MINIs. We are delighted that this decision has been so well received!”.

The subsidiary SCANTEC was also able to enjoy a great deal of popularity. Managing Director Ulrich Helfmeier and his colleagues won the Innovation Award of the Verband für Arbeitsgeräte und Kommunalfahrzeug-Industrie e.V. (VAK). With the SmartScan, SCANTEC took first place in the Assembly Component Control Technology category. SmartScan is an AI-based scanner for analysing waste in the vehicle. Specifically, this means that optical data can be used to analyse the composition of waste in the loading area. The technology assigns incorrect waste to the exact container, so that this system creates the basis for continuous citizen communication for the sustainable optimisation of separation behaviour.

A good atmosphere all round – with customers and in the team!
What makes IFAT so unique for us? It connects! ZOELLER’s COO Markus Dautermann puts it in a nutshell: “We particularly appreciate the personal dialogue on site! Having the opportunity to meet so many of our customers and partners in this environment makes the trade fair a highlight for us!”

We would therefore like to thank all the interested visitors at our stand once again. It was a great pleasure for us to have so many exciting conversations and to be able to present our products. A particularly big THANK YOU also goes to our team on site, who mastered 5 days of trade fair plus set-up and dismantling so outstandingly and really gave their all in the last few days!

ZOELLER’s Head of Sales and Service Jürgen Kowalke concludes with a nice closing statement: “The commitment and passion for the products that our colleagues bring to the table is by no means a given. I am proud to have such a strong team on site – you can be relied on!”

We look forward to saying “Let’s go IFAT” again in 2026!