Lexus RZ: Electric Revolution?

The Lexus RZ has undergone a comprehensive update, bringing significant changes to its battery, power output, trim levels, and even introducing a simulated manual gearbox. Notably, certain models now feature a steer-by-wire system, eliminating the traditional steering column altogether.

Steer-by-Wire Technology

One of the most innovative features is Lexus’s new steer-by-wire system. This technology replaces the conventional steering wheel with a yoke-like controller, similar to those found in aircraft. This yoke connects to sensors and a motor, which then communicates electronically with another motor at the front wheels.

This system dynamically adapts to the vehicle’s speed and driver input. At lower speeds, a mere 200-degree turn of the yoke provides full steering lock, a feat that typically requires multiple hand-over-hand rotations with a conventional steering wheel. The steer-by-wire system is also integrated with an “Interactive Manual Drive,” a virtual manual gear-shifting system designed to enhance the driving experience.

Powertrain and Performance

The updated RZ features a larger 77 kWh battery pack, replacing the previous 71.4kWh unit. This upgrade significantly extends the vehicle’s range. For example, the RZ 350e front-wheel-drive model, equipped with 18-inch wheels, now boasts a range of 568 km, a 93 km increase over its predecessor. The RZ 500e and 550e models offer all-wheel drive and increased power, delivering 376bhp and 402bhp, respectively.

These higher-performance models accelerate to 100 km/h approximately three seconds faster than the 350e and achieve a higher top speed of 180 km/h, compared to the 350e’s 160 km/h. However, this enhanced performance comes at the cost of range. The 500e offers a claimed range of 500 km with 18-inch wheels and 455 km with 20-inch wheels, while the 550e achieves 450 km.

Driving Experience

The driving experience varies depending on the steering system. Models equipped with the standard steering system feel similar to the previous RZ, offering a comfortable and refined ride with reduced wind noise attributed to improved sound insulation. Smaller wheels provide a more supple ride, while larger rims enhance steering feel and responsiveness.

The steer-by-wire system offers a unique sensation, particularly at low speeds, requiring drivers to recalibrate their perception. However, with time, it becomes more intuitive. The simulated manual gearbox is also well-executed. By pressing the ‘M’ button on the center console, the paddle shifters, normally used for regenerative braking adjustment, switch to controlling virtual gears. The system even simulates engine noise inside the cabin.

The virtual manual control is surprisingly authentic. Failure to shift into a higher “gear” results in the “engine” hitting a virtual rev limiter, preventing further acceleration, accompanied by corresponding sounds from the speakers. While not as convincing as similar systems developed by other manufacturers, it provides a compelling and engaging experience.

Exterior Design

The exterior design remains largely unchanged, with Lexus focusing on enhancing range and technology. However, a new top-spec trim level, the RZ F Sport, has been introduced. This trim features redesigned front and rear bumpers, a rear diffuser, a boot spoiler, 20-inch aerodynamic wheels, and blue-painted brake calipers. Regardless of the trim level, the RZ maintains a distinctive and modern appearance compared to other premium electric SUVs.

Interior Features

The interior retains its high-quality materials and construction. The new F Sport trim adds visual interest with “Ultrasuede” upholstery and blue stitching. However, the smaller yoke steering wheel can create a somewhat unfinished look due to the large gap between the wheel and the instrument cluster.

The interior offers ample space, with generous room in the back seats despite the sloping roofline. The 522-liter boot provides average cargo capacity for its class.

Trim Levels and Features

The number of trim levels has been reduced from eleven to five. The entry-level Premium trim includes a 22kW onboard charger, a panoramic roof, electrically adjustable heated front seats and steering wheel, and a 14-inch infotainment system. The Premium Plus trim adds features such as a head-up display and ventilated seats. The Takumi trim includes a Mark Levinson audio system, a dimmable glass roof, and a digital rear-view mirror.

The F Sport and F Sport Takumi trims come with the aforementioned sporty exterior enhancements and the steer-by-wire system. Notably, the steer-by-wire system is exclusive to these top-tier trims and cannot be omitted.

Conclusion

The updates to the RZ address its previous shortcomings in range, making it a more competitive offering against rivals such as the Audi Q4 E-tron, Genesis GV60, and Volvo EX40. While the steer-by-wire system may not appeal to all drivers, it provides a unique selling point in a crowded market and does not detract from the RZ’s overall appeal as a luxurious and desirable electric SUV.

Key Specifications:

• Model (as tested): Lexus RZ 550e F Sport Takumi
• Engine: Dual electric motors
• Power: 402bhp
• Torque: 538Nm
• Top Speed: 180 km/h (112mph)
• Range: 460 km
• Charging Speed: 150kW