Honda's four-wheel steering (4WS) is a coordinated rear-wheel steering system that enhances maneuverability at low speeds and stability at higher speeds by aligning the rear wheels with the front wheels during driving.
What is four-wheel steering?
Four-wheel steering describes a system where not only the front wheels, but also the rear wheels, can change direction in response to steering input and vehicle conditions. The intent is to shorten the vehicle’s turning radius in tight spaces and to improve stability and steering feel when driving straight or through corners.
In practice, the rear wheels may turn opposite to the front wheels at low speeds to reduce steering effort and minimum turning circle; at higher speeds, the rear wheels can turn in the same direction as the front wheels to improve stability and cornering precision. Honda’s implementation relies on sensors, an actuator, and a control unit to coordinate this movement with the driver’s steering command.
How Honda's 4WS works
Honda’s 4WS system uses a combination of hardware and software to control rear-wheel movement. The rear wheels are steered by an actuator connected to the rear suspension geometry, and a central control unit uses data from steering angle, vehicle speed, yaw rate, and other signals to decide how much the rear wheels should turn and in which direction.
Core components
Key hardware and electronics involved in Honda's 4WS include:
- Rear-wheel steering actuator (hydraulic or electric)
- Rear suspension linkage that accommodates steering input
- Electronic control unit that processes inputs and issues commands
- Steering-angle sensor and steering-wheel position data
- Vehicle-speed sensor and yaw-rate sensor
- Power electronics and wiring to integrate with the vehicle’s chassis control systems
The system is designed to be seamless and to feel natural to the driver, avoiding abrupt rear-wheel movements that could undermine confidence.
How it responds to driving conditions
At low speeds, such as parking or navigating tight spaces, the rear wheels typically turn in the opposite direction of the front wheels to greatly reduce turning radius and improve agility. As speed increases, the rear wheels gradually begin to turn in the same direction as the front wheels to help resist oversteer, enhance stability, and improve lane changes. The control strategy is tuned to deliver smooth transitions and maintain predictable handling characteristics.
Benefits and trade-offs
Below is a snapshot of the practical advantages and the considerations associated with Honda’s 4WS technology.
- Smaller turning radius at low speeds, easing parking and tight maneuvers
- Improved maneuverability in confined spaces and during lane changes
- Enhanced high-speed stability and steering feel in dynamic bends
- Potentially improved cornering performance with reduced understeer
Like any additional system, 4WS adds mechanical complexity, potential maintenance considerations, and weight. In modern cars, some of its benefits are increasingly achieved through other electronic aids such as advanced stability control, torque-vectoring, and electric steering systems, which has led to a decline in widespread 4WS production in recent years.
Historical context in Honda's lineup
Honda experimented with rear-wheel steering for several generations in the 1980s and 1990s, with the most widely known application appearing on the Honda Prelude. Availability and specifics varied by market and model year, and Honda gradually shifted emphasis toward other handling technologies as electronic control systems evolved.
- Honda Prelude: The most frequently cited consumer program for 4WS, offered on certain generations
- Limited-market variants and concept studies exploring rear-wheel steering in other model lines during the 1990s
Today, Honda’s mainstream models generally rely on more contemporary handling technologies rather than factory 4WS, though the concept remains part of automotive history as an early step toward more sophisticated dynamic control systems.
Comparisons with other systems and modern tech
Four-wheel steering sits alongside other steering and stability technologies. While some brands continue to explore rear-wheel steering or variable-ratio systems, many modern Honda models rely on electronic stability control, adaptive damping, and advanced steering assist features to achieve similar benefits without a dedicated 4WS mechanism.
- Other automakers offered 4WS during the same era, using similar principles of speed-sensitive rear steering
- Modern systems often use electric rear-axle steering or torque-vectoring to achieve comparable handling improvements with different trade-offs
In aggregate, 4WS played a role in shaping how automakers think about maneuverability and stability, but advances in sensor fusion, actuators, and control software have broadened the toolkit beyond rear-wheel steering alone.
Summary
Honda’s four-wheel steering system is a rear-wheel steering technology designed to shorten the turning radius at low speeds and boost stability at higher speeds by coordinating rear-wheel movement with the front wheels. It achieved its greatest visibility on the Honda Prelude and in select experiments, but modern car dynamics have largely moved toward other electronically controlled systems. For buyers and enthusiasts, 4WS remains a notable step in the evolution of vehicle handling that helped pave the way for today’s sophisticated stability and steering technologies.
How does the Honda Real Time 4WD work?
Real Time AWD operates in four-wheel drive when the accelerator pedal is depressed. The moment it is released, the system stops distributing driving force to the rear wheels and switches to two-wheel drive.
What year to avoid Honda Prelude?
Reliability on Fourth-gen Honda Prelude models is less impressive, however, with the most problems and concerns relating to 1992 models.
What did Honda call their four-wheel steering?
Honda announced the Honda 4WS technology in October 1986, and in the following year, launched the Prelude, with the steering angle sensing Honda 4WS as optional. This system consisted of two steering gearbox sub-systems (front and rear) mechanically connected by a center shaft.
What are the cons of 4 wheel steering?
The Disadvantages of Four-Wheel Steering
They require a lot more components and calibration than traditional steering systems, and this carries an accompanying cost.