How do you provide a large SUV with sporty road-holding properties and minimal body roll without impairing ride comfort? Audi has resolved this by implementing electromechanical roll stabilization (eAWS). Assisted by the 48-volt onboard electrical system and powerful actuators, the stabilizers on the front and rear axle can be actively controlled according to the driving situation. As a result, the models retain their high level of ride comfort in straight-line driving. By contrast, in cornering and load alteration situations, they impress with enhanced lateral dynamics combined with minimal body roll. The technical advantages of Audi’s electromechanical solution: it is energy-efficient, operates in near-real-time and is virtually maintenance-free due to the absence of hydraulic elements.

What challenges do large SUV models pose to chassis engineers?

Customers of larger SUVs are thrilled by their many practical elements – from ample space in the cabin to cutting-edge chassis technologies to powerful engines and advanced control and assistance systems. Plus, an SUV can deliver superb performance off paved roads. Due to their design, these vehicles feature a higher curb weight and a higher center of gravity. This means that the body of an SUV leans more toward the outside in cornering than it does on models with a lower center of gravity.

What technology counteracts body roll and body movements?

In cornering, the body leans toward the outside due to the centrifugal forces, in other words, the wheel on the outside of the corner goes into jounce travel while the one on the inside of the corner goes into rebound – the vehicle rolls around its longitudinal axis. Torsionally flexible anti-roll bars between the left- and the right-hand side of the axle are proven means of compensating for this effect. They help reduce the body’s tendency to roll by applying reverse torsion torque to the suspension on the outside and inside of the corner, thus counteracting the body’s tendency to roll. This passive suspension component has the same effect in both cornering and straight-line driving. However, an effect that is desirable in cornering may impair ride comfort in straight-line driving on roads with bumps or potholes on one side of the surface. While passive solutions can reach their limits here, Audi has resolved this by means of electromechanical roll stabilization. Using sensors to capture and detect the situation, the system is designed to intervene with pinpoint precision only when less body roll is desired. Thus, the spring rate of the stabilizers on uneven and straight roads is lowered to a basic level and the spring and damper forces act by and large independently on the left- and right-hand wheels.

How does electromechanical roll stabilization work?

A conventional stabilizer operates passively. In other words, it just balances the suspension movements on both sides by means of mechanical coupling. By contrast, electromechanical roll stabilization can be specifically controlled. The system consists of two stabilizer halves per axle, with an electric motor operating between them on both the front and rear axle. It can rotate the stabilizer halves in opposite direction of each other and thus generate torque that counteracts body roll torque – individually for each wheel. As a result, it reduces the body roll angles and actively supports them against the physical effects of the driving situation. The system receives its commands via control units on the front and rear axle, which are part of the Electronic Chassis Platform (ECP). The ECP is the central brain of the chassis. Within milliseconds, it matches a variety of parameters such as speed, ride height, roll and pitch movements of the car, the friction coefficient of the road surface, the current driving condition such as under- or over-steer, plus the data of the chassis systems involved. From this input, the system calculates the ideal responses for the integrated components and adjusts them quickly and precisely to each other. The required electrical energy is supplied to the eAWS by a powerful 48-volt onboard electrical system. Within milliseconds, the system calculates suitable actuation values for the stabilizers. The electric motors deliver their power output via three-stage planetary gearboxes, with torque levels of up to 1,200 Nm being generated at the stabilizers.

What is “Vorsprung durch Technik” in the case of an electromechanical solution?

The 48-volt system enables an immediate system response even at low speeds. Latency between the sensors detecting body roll and the response by the electric motors is just a few milliseconds. Unlike hydraulic solutions, the eco-friendly electromechanical system does not require oil circuits and is maintenance-free. It is even able to recuperate energy by capturing suspension impulses on its electric motor, converts them into electrical energy and stores it in the lithium-ion battery of the onboard electrical system. The electromechanical solution uses energy more efficiently as well. In contrast to hydraulic circuits, it does not have to store and provide pressure.

How does the driver benefit from the system?

The system helps reduce the body’s tendency to roll, provides a sportier and more confident handling impression and emphasizes the versatile character of the large SUV models. It can actively distribute roll torque to the front and rear wheels and influence the car’s intrinsic steering characteristics such as the tendency to under- or oversteer. The Audi drive select driving dynamics system offers various setup options for this. Electromechanically active roll stabilization imparts to the driver a dynamic and precise feel in a variety of situations and enables enhanced handling characteristics. It is one of various systems that perfect the dynamism of the top-end models of the Q range. The Audi Q7, SQ7, SQ8 and RS Q8 models with their controllable stabilizers respond to the driving situation precisely as expected by the driver. On uneven road surfaces, the body movements are reduced while ride comfort increases. In sporty driving and at high cornering speeds, the car feels more stable and at ease. It pushes itself into a bend in the road. Audi has deliberately selected a setup that does not completely neutralize the roll angle but continues to impart an authentic feel of the driving dynamics situation.

How is the system on the racetrack and the real world?

Impressive proof of the influence of the controllable stabilizers was provided by race and test driver Frank Stippler in the fall of 2019. As part of the development work for the Audi RS Q8 the professional race driver, who in 2019 won the 24-hour race at the Nürburgring for the second time with Audi, set a new lap record for production SUVs. He managed to drive the 20.832-kilometer distance of the race track in the Eifel region in just 7:42 minutes. Forty percent of global Audi customers who have ordered a large Audi SUV model have chosen the option of electromechanical active roll stabilization. (MT)

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German automotive major the BMW Group and its consortium partners have concluded the Car2Car research project, demonstrating that high-quality material recovery from end-of-life vehicles is technically feasible for industrial automotive applications.

Under expanded processing and sorting conditions, the consortium increased the percentage of recoverable materials from 6 percent to 51 percent across five focus material groups.

The project evaluated recovery paths for steel, aluminium, copper, plastics and glass. Under optimised processing routes, the recovery rate for steel rose from 1 percent to 81 percent, aluminium increased from 23 percent to 52 percent and copper grew from 48 percent to 68 percent. The improvements were achieved through pre-sorting, modified shredding processes, classification, sensor-based sorting and alloy separation.

Alexander Efthimiou, Senior Vice President Business Development, BMW Group, said, “The circular economy is an integral part of the BMW Group’s corporate strategy. Car2Car shows that its full potential can be realised when the entire value chain is optimised. Together with our partners, we are using the project findings to develop new process and business models that combine environmental and economic benefits, and advance the transition towards a circular automotive industry.”

To address copper contamination that prevents scrap steel from being reused in automotive flat steel, the project introduced a targeted sorting process for which a patent application has been filed. Steel coils produced through this method were tested at BMW Group Plant Leipzig, where over 100,000 series parts were manufactured and installed in vehicles.

Hilke Schaer, Car2Car project manager, BMW Group, said, “With Car2Car, we wanted to understand under which conditions materials from end-of-life vehicles can be reused in new cars. The project has shown the potential in current material streams from end-of-life vehicles that have not yet been optimised for high-quality material loops. The most significant progress was seen with steel: We were able to demonstrate that high-quality flat steel for automotive applications can be produced from end-of-life vehicle scrap. In the field test at BMW Group Plant Leipzig, more than 100,000 series parts were produced using this steel and installed in vehicles – making the project’s results tangible.”

While metal recycling yielded positive results, the consortium noted that technological challenges remain for plastics and glass due to material varieties and complex composite structures. Large-scale implementation across the industry will require process chains, additional infrastructure investments and regulatory frameworks aligned with the European ELV Regulation.

The consortium comprised BMW AG, TU Bergakademie Freiberg, the Helmholtz Institute Freiberg for Resource Technology, Technical University of Munich, Scholz Recycling, STEINERT UniSort, thyssenkrupp Steel Europe, Salzgitter Mannesmann Forschung, Aurubis, Novelis Germany, OETINGER Aluminium and Pilkington Automotive Germany.

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Cars24 has signed a Memorandum of Understanding (MoU) with the Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry, to support India's startup ecosystem through initiatives focused on artificial intelligence, mobility, and road safety.

As per the agreement, Cars24 will establish structured programmes for early-stage founders, granting access to its infrastructure, mentor network, funding sources, market connections and technical resources. In turn, the DPIIT will facilitate national outreach and ecosystem integration via the Startup India platform, supporting knowledge exchange, co-branding and policy engagement.

The partnership encompasses five specific areas of operation: mentorship for early-stage founders via the Cars24 Founders' Fellowship, training through Mobility and Autotech Skilling Programmes, technical support and AI integration via Cars24 Labs, investor connections through Fuel by Cars24 and the organisation of an annual Innovation Challenge and Road Safety Hackathon alongside the DPIIT.

Vikram Chopra, Builder, Cars24, said, “Cars24 is proof that Indian founders can start with a difficult, everyday problem and build something on a national scale. We want to pass that possibility on. Through this partnership with DPIIT, we are backing the next generation of builders with more than advice. We want to give them access, capital, talent and a real platform to test ideas that can make India move smarter and safer.”

A senior DPIIT official commented, “Industry participation is central to strengthening India’s startup ecosystem. Collaborations of this kind, where an established market leader opens up its scale, mentorship and resources to early-stage founders, are exactly the bridge between ambition and execution that young startups need. We welcome Cars24’s commitment to mentoring, skilling and supporting product startups across the country.”

The non-binding MoU establishes a framework for ongoing collaboration between both entities to foster technology adoption and entrepreneurship within the Indian mobility sector.

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NXP Semiconductors has announced that the BMW Group will deploy its Trimension NCJ29D6 Ultra-Wideband (UWB) family across its vehicle fleet, beginning with selected 2026 production programmes.

The hardware component integrates fine-ranging capabilities with short-range radar functionality on a single chip. This allows vehicle manufacturers to utilise a single system for multiple applications, including hands-free vehicle entry and occupant presence detection.

The integration supports BMW’s Digital Key Plus feature, which enables vehicle owners to substitute key fobs with smartphones or smartwatches. The system manages locking and unlocking functions as the user approaches or moves away from the vehicle. Additionally, the technology includes in-cabin radar monitoring designed to identify motion patterns consistent with occupants or animals left inside a parked vehicle, sending notification alerts to users to align with European and Chinese NCAP assessment protocols.

Markus Staeblein, Senior Vice-President and General Manager, Secure Car Access at NXP Semiconductors, said, “NXP’s proven Trimension UWB platform maximises value for OEMs, using a single system to deliver multiple new and differentiating features for drivers. Digital key and presence detection are just the beginning. OEMs will be able to deliver additional UWB-based features, such as kick sensing, intrusion alert or automatic charging, as they establish the secure hardware platform in their vehicles.”

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Envalior India, an engineering materials company formed through the merger of DSM Engineering Materials and LANXESS High Performance Materials, will inaugurate the Envalior Centre of Excellence in Electric Vehicle Technology on 5 August 2026 as part of its corporate social responsibility (CSR) program.

The CoE located at Marathwada Mitra Mandal's Polytechnic in Pimpri-Chinchwad, Pune, will be implemented by the BroadArks Foundation to provide vocational training in electric vehicle systems.

It plans to train 250 individuals annually through two courses: a Level 4 Certificate in EV Service, Safety & Maintenance and a Level 5 Advanced Certificate in EV Diagnostics & Systems.

The curricula align with the National Skills Qualifications Framework and carry certification support from the Confederation of Indian Industry. The programs target students from Industrial Training Institutes and polytechnics studying mechanical, electrical, electronics, mechatronics and computer science disciplines.

Training instruction covers classroom coursework and laboratory modules focused on vehicle architecture, battery management systems, charging infrastructure, thermal management, power electronics, diagnostics and workshop safety protocols. Practical assessments and industry projects form part of the curriculum structure.

Nileshkumar Kukalyekar, Business Director – South Asia, Middle East & Africa, Envalior, said, "The launch of the Envalior Centre of Excellence reflects our commitment to supporting India's transition towards electric mobility by investing in the people who will power it. Through this Centre, we aim to provide students with industry-aligned, hands-on training that prepares them for the evolving demands of the EV sector while contributing to a stronger and future-ready workforce."

In addition to student instruction, the facility is designed to support laboratory infrastructure and instructor development programs for technical education in the region.

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