THE ALL-NEW LEXUS LBX

The front suspension features a newly developed MacPherson strut suspension with updated suspension geometry. The large caster angle ensures excellent straight-line stability, suppresses toe-in changes during body roll, and minimizes understeer. This results in solid and confident linear control over vehicle posture during cornering, all the way to the limits. A highly rigid forged aluminum knuckle is employed for the front suspension knuckle to reduce unsprung weight. In addition, the newly developed input-separation type upper support with three-point attachment contributes to both linear steering response and refined ride comfort.

The rear suspension for the FF model features a lightweight and exceptionally rigid torsion beam, while the AWD model uses a trailing arm type 2-link double-wishbone suspension that houses the rear motor and achieves excellent driving performance. The newly developed shock absorbers use quick reacting sliding components to ensure dampening force at very low speeds, as well as a high level of both maneuverability and ride comfort.

The use of large-diameter, wide tires improves the load-carrying capacity and creates a class-defying presence. The linear portion of the tire characteristics are used to achieve highly predictable dynamic performance.

The vehicle utilizes the AHB-G brake system, contributing to smoother brake feel and improved pedal response. Furthermore, Braking Vehicle Posture Control (pitch control) has been implemented to achieve a linear braking feel and a heightened sense of stability.

A significant reduction in engine noise and vibration has been achieved by suppressing the sources of sound and vibration. Various measures were implemented around the engine, such as optimized placement of engine mounts to minimize shock during startup, incorporating a balance shaft with the engine to dampen low RPM floor vibrations, and adding a resonator to the air cleaner hose to diminish intake noise.

For the exhaust system, a flexible pipe has been added to reduce vibration from the engine, and the main muffler capacity has been increased to lower exhaust noise. Furthermore, by adding an additional sound-absorption layer to the two-layer inner dash silencer and creating a three-layer structure, the thickness and density of the layers are optimized, thereby enhancing the sound absorption and insulation performance.

Vibration is efficiently suppressed without the use of heavy materials by incorporating a high-dampening type of mastic sealer for a portion of the roof panel, resulting in a quieter cabin when driving or in the rain, as well as a lower center of gravity due to weight reduction.

The new LBX focuses on providing visibility and a driving position that fosters a deep connection between the driver and car, emphasizing a sense of unity. The lowered seat position brings the driver closer to the vehicle's center of gravity, thereby facilitating easier pedal operation and enhancing the sense of harmony with the vehicle's motion. The wrist and elbow angles, distance from the shoulder, and other factors were repeatedly verified on physical models to achieve an ideal steering position promoting an effortless application of force.

The pedal position was also carefully reexamined to align with the driver position. The accelerator pedal incorporates an organ-style design that seamlessly integrates with the movement of the ankle, ensuring excellent operability. The brake pedal is designed with an angle that allows for a smooth and natural transition from the accelerator pedal, while the footrest is positioned to accept any necessary force during pedal operation.

For driver visibility, the blind spot area near the hood has been reduced, while the upper portion of the hood remains visible, making it easier for the driver to grasp the vehicle's position. Great attention was given to the design of the A-pillar and hood layout to optimize forward and downward visibility. The design contributes to a better perception of the driving line for improved line tracing and ensures a deeper connection between the driver and car.

With a focus on fostering seamless interaction with the vehicle, the goal was to develop seats enabling the driver to easily sense the vehicle dynamics and execute precise driving maneuvers. The seat cushion features a deep form, minimizing changes in seat cushion pressure when subjected to lateral loads and ensuring exceptional stability of the driver's posture during cornering. The seat back design focuses on elongating the spine and provides enhanced hip support for a stable line of sight and minimal head movement.

The new LBX offers a Hybrid Electric Vehicle (HEV) model incorporating a highly efficient 1.5L inline 3-cylinder engine (M15A-FXE), a compact and lightweight transaxle with enhanced motor output, and a high-output bipolar NiMH battery.

The Lexus Driving Signature is achieved by fully harnessing the performance of the engine, motor, and battery using extensive expertise in electrification technology. Battery and motor assistance in response to accelerator input has been significantly enhanced, resulting in minimal delay and a quick motor-like acceleration feel.

The synchronization of the engine speed, vehicle speed, and engine sound during acceleration results in a smooth and linear driving experience. The HEV system is precisely controlled to optimize efficiency, leading to outstanding fuel economy.

The new LBX incorporates drive force control that intelligently adjusts acceleration and deceleration based on the driving conditions. During uphill and downhill driving, the system detects variations in road incline and provides assistance by adjusting the acceleration and deceleration torque, minimizing the need for frequent gas pedal and brake inputs.

Furthermore, when the system detects significant front/rear/left/right G-forces during cornering on twisty roads, it increases deceleration upon gas pedal release, maintains engine rpm, and provides assistance for smooth re-acceleration, thereby assisting in a pleasant driving rhythm. The result is a seamless and responsive driving experience that takes the driver's intentions and surroundings into account.

Lexus embraces the paramount vision of achieving "zero traffic fatalities and injuries" in a mobile society and actively pursues the development of advanced safety technologies. Understanding the significance of swift advancement and widespread implementation of world-class safety features, the latest iteration of Lexus Safety System+ has been incorporated into the new LBX.

With new support scenarios in Proactive Driving Assistance and adaptive control based on driver monitoring, Lexus strives to further enhance the safety and security of the customers' driving experience.