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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India’s automotive industry could face fresh supply chain disruptions by mid-July 2025 due to declining inventories of rare earth magnets, following tightened export restrictions and shipment delays from China, according to rating agency ICRA.

Jitin Makkar, Senior Vice President and Group Head – Corporate Ratings at ICRA, cautioned that the situation echoes the semiconductor shortage of 2021–22, which led to the loss of nearly 100,000 passenger vehicles. “Rare earth magnet inventories are projected to last only until mid-July 2025 for several passenger vehicle and two-wheeler applications,” he said.

Neodymium-iron-boron (NdFeB) magnets, critical for high-performance uses like EV traction motors and power steering systems, are heavily imported – around 85 percent of India’s USD 200 million imports in FY2025 came from China. These magnets make up nearly 30 percent of an electric two-wheeler motor’s cost, with motors priced between INR 8,000 and INR 15,000 depending on specifications.

To counter the supply challenge, Indian OEMs and auto component manufacturers are exploring several alternatives: importing fully assembled motors from China, sending rotors to China for magnet assembly, using substitute materials with similar properties, or switching to rare earth-free motors using electromagnets. However, each option faces significant logistical, regulatory, and engineering hurdles.

While the immediate impact could disrupt production planning, ICRA believes the crisis may also drive innovation and diversification in both materials and supply chains for the Indian auto sector.

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Hyundai Mobis, a part of Hyundai Group specialising in manufacturing of auto components, modules & systems, has developed a new rear safety control technology that can reduce rear-end collisions.

The company states its new active control technology uses sensors to detect approaching vehicles from behind and manoeuvre the vehicle out of danger, is expected to hit the market soon. It integrates sensors such as rear-side radars and front cameras with driving control technology.

The solution works when the driver engages the Smart Cruise Control (SCC) function on the highway. When the sensors detect any other vehicle at a proximity of 10 metres or less, it first emits an audio alarm or a visual warning on the cluster. When the situation keeps persisting after a certain amount of time, the vehicle automatically accelerates to maintain a safe distance. In addition, the rear side radars also detect the movement of the vehicle behind, while the front camera recognises the lane and vehicle ahead on the driving path to assist in safe acceleration.

Hyundai Mobis acknowledges that while some global OEMs have already integrated such technology, the functions are not yet advanced enough for the vehicle to control itself autonomously. On the other hand, its technology is able to independently adjust the distance between the front and rear vehicles and avoid dangerous situations.
The Korean company plans to further expand the scope of autonomous control for defensive driving against rear vehicles. Currently, the company is developing a lane-changing function to escape dangerous situations, in addition to an acceleration control function that allows the vehicle to speed up on its own.

Jung Soo-kyung, Executive Vice-President and Head of Automotive Electronics Business Units, Hyundai Mobis, said, “We will actively protect the safety of mobility users by providing solutions that can intelligently handle not only front-end safety, but also dangerous situations caused by rear vehicles while driving.”

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HARMAN, a leading automotive technology company and subsidiary of Samsung Electronics, has unveiled an advanced in-vehicle display that elevates the driving experience with consumer-tech-level visuals. This cutting-edge display, set to debut in the all-new Tata Harrier.ev, represents the first automotive integration of Samsung’s proprietary Neo QLED technology, exclusively licensed and optimised by HARMAN for vehicle applications.

The new 14.53-inch floating Neo QLED display delivers stunning home-theatre-quality visuals with vibrant colours, deep contrast and enhanced brightness, all powered by intelligent algorithms and a sleek, modern design. Engineered to perform flawlessly in all lighting conditions, the display incorporates HARMAN’s proprietary real-time visual control technology, which dynamically adjusts image output to optimize power efficiency. Among its key innovations are the industry’s first cadmium-free Quantum Dot display with intelligent Blue Mini-LED control, 1200-nit peak brightness, true black levels and an expansive 95 percent NTSC colour gamut. The ultra-slim design, featuring bezels under five mm, ensures a seamless and sophisticated aesthetic.

This breakthrough builds on HARMAN’s longstanding partnership with Tata Motors, which began with the integration of JBL audio systems in Tata vehicles across India. With the Harrier.ev, the collaboration now extends to premium branded displays, reinforcing both companies’ commitment to innovation and superior in-car experiences.

Shilpa Dely, Vice President – Displays, HARMAN, said, “We’ve brought together Samsung’s cutting-edge consumer display innovation and HARMAN’s deep automotive expertise to create something truly unique: a first-of-its-kind, in-vehicle visual experience that brings living room TV-level brilliance to the road. We have finally closed the gap between consumer and automotive display technology – and we’re proud to debut this global breakthrough with our trusted partners at Tata Motors.”

Anand Kulkarni, Chief Products Officer, Tata Passenger Electric Mobility Limited, said, “We’re committed to delivering world-class technology to Indian consumers. Together with HARMAN, we're bringing the best of consumer display innovation in India’s most capable SUV, the recently launched Harrier.ev, transforming it into a true third living space after home and office. This collaboration sets a new standard for in-cabin experiences – not just in India, but around the world.”

Sanjeev Kulkarni, Vice President – Sales, HARMAN, said, “Our partnership with Tata Motors spans more than a decade and is built on a like-minded approach to innovation, along with a joint promise to deliver the very best in-cabin experiences to our customers,”. “From JBL premium audio to advanced intelligent cockpit solutions, HARMAN is a defining part of the Tata driving experience. With the introduction of our new display product, we’re proud to take that collaboration even further.”

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Chinese-owned Swedish automotive major Volvo Cars has unveiled a new multi-adaptive safety belt, which it claims is a world-first technology aimed to further enhance safety for everyone in real-world traffic situations. The multi-adaptive safety belt is set to debut in Volvo EX60 in 2026, the company’s fully electric offering. It uses real-time data from the cars advanced sensors to adapt to traffic variations and the user wearing the seatbelt.

Based on the data input from interior and exterior sensors the seatbelt provides customised protection, adapting the setting based on the situation and individual’s profiles, such as their height, weight, body shape and seating position. For example, a larger occupant in a serious crash will receive a higher belt load setting to help reduce the risk of head injury. While a smaller occupant in a milder crash will receive a lower belt load setting to reduce the risk of rib fractures. Using over-the-air software updates, it gets better over time.

Asa Haglund, Head of Volvo Cars Safety Centre, said, “The world's first multi-adaptive safety belt is another milestone for automotive safety and a great example of how we leverage real-time data with the ambition to help save millions of more lives. This marks a major upgrade to the modern three-point safety belt, a Volvo invention introduced in 1959, estimated to have saved over a million lives.”

The Swedish carmaker stated that modern safety belts use load limiters to control how much force the safety belt applies on the human body during a crash. This new safety belt expands the load-limiting profiles from three to 11 and increases the possible number of settings, enabling it to optimise performance for each situation and individual. Unlike traditional systems, the new multi-adaptive safety belt can utilise data from different sensors, including exterior, interior and crash sensors. In less than a blink of an eye, the car’s system analyses the unique characteristics of a crash – such as direction, speed and passenger posture – and shares that information with the safety belt. Based on this data, the system selects the most appropriate setting.

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