ZF to Launch Steer-by-Wire and EasyTurn Systems on Mercedes-Benz Models in 2026

ZF to Launch Steer-by-Wire and EasyTurn Systems on Mercedes-Benz Models in 2026

(IN BRIEF) ZF will equip Mercedes-Benz with its steer-by-wire system in 2026, replacing the mechanical steering shaft with an electronic interface that enhances maneuverability, stability, and safety. The system’s software-controlled steering ratio adapts to driving conditions, while the Twin Worm torque-feedback unit ensures precise, backlash-free road feel. Compliant with ASIL-D safety standards, ZF’s steer-by-wire supports Level 4 autonomous functions and accelerates development by enabling brand-specific steering via software. Paired with the EasyTurn axle, which doubles steering angles and halves turning circles, ZF’s technologies redefine vehicle agility for city and delivery applications.

(PRESS RELEASE) FRIEDRICHSHAFEN, 11-Jul-2025 — /EuropaWire/ — ZF is set to supply Mercedes-Benz with its pioneering Steer-by-Wire technology beginning in 2026, marking the first European series production of true steer-by-wire steering. By replacing the traditional mechanical linkage between the steering wheel and road wheels with a fully electronic interface, ZF’s system unlocks virtually unlimited steering-ratio flexibility. This advancement delivers superior maneuverability, stability, and responsiveness—especially when paired with the ZF EasyTurn axle concept for exceptional low-speed agility.

In a steer-by-wire setup, the driver’s input is captured by a cockpit actuator and transmitted electronically to a wheel-mounted mechatronic actuator, while a redundant torque-feedback unit at the steering wheel recreates natural road feel. The software-defined system dynamically adjusts steering ratios—offering direct steering for parking and an indirect ratio at speed—enhancing safety, comfort, and performance. Eliminating the intermediate steering shaft also reduces noise transmission, increases cabin design freedom, and streamlines assembly and platform adaptation for left- or right-hand-drive markets.

Developed with safety-critical redundancy and compliant with ASIL-D standards, ZF’s steer-by-wire lays the foundation for advanced driver assistance up to Level 4 autonomous driving—including future features like Automated Emergency Steering. Moreover, its software-centric design allows OEMs to fine-tune brand-specific steering characteristics without mechanical variant complexity, accelerating development cycles and improving cost efficiency.

At the heart of ZF’s torque-feedback innovation is the patented Twin Worm concept—a compact, dual-worm-drive unit delivering class-leading torque-to-size ratio and precise steering feel without mechanical backlash. “Our Twin Worm system, governed entirely by software algorithms, eliminates gear play and enables ultra-flat steering wheel designs with as little as 180° to 210° of rotation,” says Stéphane Cassar, Head of Steer-by-Wire at ZF.

Complementing steer-by-wire, ZF’s EasyTurn front-axle steering doubles wheel lock-to-lock angles from 40° to 80°, shrinking a typical midsize car’s turning circle from over ten meters to under seven. “Steer-by-wire removes physical limits, so even minimal steering-wheel inputs yield maximum maneuverability,” explains Peter Kontermann, EasyTurn Project Manager. EasyTurn is ideal for urban vehicles—compact cars, delivery vans, and people movers—and, when combined with ZF’s active rear-axle steering, can transform the agility of larger sedans and crossovers.

About ZF
ZF is a global technology company supplying advanced mobility products and systems for passenger cars, commercial vehicles and industrial technology. Its comprehensive product range is primarily aimed at vehicle manufacturers, mobility providers and startup companies in the fields of transportation and mobility. ZF electrifies a wide range of vehicle types. With its products, the company contributes to reducing emissions, protecting the climate as well as enhancing safe mobility. Alongside the automotive sector – passenger cars and commercial vehicles – ZF also serves market segments
such as construction and agricultural machinery, wind power, marine propulsion, rail drives and test systems.

With some 161,600 employees worldwide, ZF reported sales of €41.4 billion in fiscal year 2024. The company operates 161 production locations in 30 countries.

For further press information and photos, please visit: www.zf.com

Media Contacts:

Martin Ehrenfeuchter, Press Spokesperson, Chassis Technology,
Tel.: +49 7541 77 963 248; e-mail: martin.ehrenfeuchter@zf.com

Florian Tausch, Head of Communications, Chassis Solutions Division,
Tel.: +49 5474 60 2190; e-mail: florian.tausch@zf.com

SOURCE: ZF