Lexus will introduce a performance hybrid and an Overtrail grade for off-road enthusiasts to the updated 2025 LX series.
The LX 700h is the first Lexus SUV with a hybrid powertrain explicitly designed for off-roading demands. It and the Overtrail will be considered when the updated LX comes to Australia.
Alongside the LX 600 petrol and LX 500d diesel, the LX hybrid gives customers the choice of three powertrains to suit diverse needs.
Lexus chose a newly designed parallel hybrid unit for LX 700h to preserve the reliability and durability customers expect when heading into the bush or snow.
It is the first Lexus hybrid SUV with a wading depth (700mm) comparable to ICE off-roaders. It is the first Lexus parallel hybrid to feature an alternator and a starter motor, reducing reliance on the electric motor for selected vehicle functions.
Following its successful introduction to the recently launched second-generation GX, the Overtrail grade will be offered with all LX powertrains.
Lexus International chief engineer Takami Yokoo says the LX 700h embraces the next chapter of electrification for the brand.
“During development, we were determined in our commitment not to compromise the reliability, durability, and off-road performance that has defined previous LX models, even with electrification,” Yokoo says.
“For those who have been deeply involved with the LX over the years, electrifying it for use in demanding global environments seemed both an immense challenge and a long-held aspiration.
“Our goal was to preserve the true Lexus driving experience. As a unified development team, the solution we reached was to develop a new parallel hybrid system along with upgrades to the GA-F platform,” he says.
First parallel hybrid system for LX
The LX 700h’s parallel hybrid system integrates the motor/generator with a clutch between the 3.5L V6 twin-turbo petrol engine and 10-speed automatic transmission with torque converter. This configuration maintains key features like full-time 4WD and a low-range transfer case.
Drivers with a parallel hybrid benefit from combining the instant torque of an electric motor with a torque-rich, high-displacement engine for powerful acceleration from a standstill and at cruising speeds.
The hybrid control system also intelligently manages the transition between engine-only and motor-only modes, optimising performance based on driving conditions.
This allows the electric motor to be used independently of the ICE for low-range driving. In conjunction with the various modes of Multi-Terrain Select, this setup is ideal for conditions requiring precise throttle control, such as on rocky trails, chopped-up dirt roads, and deep snow.
The LX 700h’s suitability across all driving conditions – both on and off-road – further enhances the Lexus Driving Signature (LDS) with predictable vehicle dynamics faithful to the driver’s input.
Importantly, fitting a starter motor to the parallel hybrid unit enables engine ignition independent of the electric motor. At the same time, the alternator powers the 12V auxiliary battery, allowing the LX 700h to continue driving using the ICE only if required.
Essential off-road functions, including ride height adjustment using Active Height Control (AHC) and Active Traction Control (A-TRAC), remain fully operational, ensuring continued off-road capability when the electric motor is not used.
The LX 700h does not lose capability when faced with deep water crossings. A specially designed waterproof casing for the main hybrid battery helps prevent water ingress to an impressive 700 mm wading depth.
It is also fitted with a waterproof AC inverter under the centre console, which can provide an external power supply of up to 1500W or 2400W, depending on the region.
Introducing LX Overtrail
Overtrail builds upon the LX’s outstanding off-road credentials by adding practicality, convenience, and style.
The new grade, available in a five-seat configuration, adds front and rear locking differentials to provide equal power transfer across the front and rear driveshafts, resulting in better traction over soft and loose terrain.
Exclusive 18-inch alloy wheels fitted with all-terrain tyres maximise off-road grip, with serious adventurers now able to go deeper into the wilds thanks to a 30-litre auxiliary fuel tank increasing total capacity to 110 litres.
Bespoke exterior design enhancements include a black radiator grille with front and rear bumpers, wheel arches, outer mirrors, door handles, and roof rails, also in black tones. Overtrail grade seats and ornamentation create interior differentiation, while Moon Desert exterior colour is now offered with Overtrail.
All LX grades have a larger 12.3-inch full LCD screen, which replaces the current eight-inch version and adds functionality. Overtrail customers can further personalise the display with a hybrid battery charge status.
Improved body and safety
The LX’s body-on-frame GA-F platform is improved to accommodate the parallel hybrid powertrain. An additional third cross member with an optimised cross-section and greater plate thickness supports the powertrain’s added length, weight, and upgraded rear engine mounts.
Redesigning the mounting cushions that attach the upper body delivers improved strength and torsional rigidity. This design also reduces low-frequency vibrations, further suppressing road noise to create an even quieter cabin.
The latest iteration of the Lexus Safety System + (LSS+) adds further protection for vehicle occupants and other road users. Highlights include Emergency Driving Stop System (EDSS), Driver Monitor Camera (DMC), and Safe Exit Assist (SEA).
Lexus Australia will share further news on the upgraded LX model.
