2021 Lexus LX IV (J300) 600 V6 (415 Hp) AWD Direct Shift

The Lexus LX 600, representing the fourth generation (J300) of the Lexus LX full-size luxury SUV, debuted in October 2021. Built upon the Toyota Land Cruiser 300 platform, the LX 600 signifies a substantial redesign and modernization of the LX lineage. This particular variant, equipped with the 3.5-liter V6 twin-turbocharged engine producing 415 horsepower and paired with a 10-speed Direct Shift automatic transmission and full-time all-wheel drive, positions itself as the primary offering within the J300 range, aiming to balance luxury, capability, and performance. It represents Lexus’s entry into a competitive segment dominated by vehicles like the Range Rover and Cadillac Escalade, offering a unique blend of Toyota reliability and Lexus refinement.

Technical Specifications

Powertrain & Engine Architecture

The heart of the LX 600 is the V35A-FTS 3.5-liter twin-turbocharged V6 engine. This engine represents a significant departure from the naturally aspirated V8 engines found in previous LX generations. The twin-turbo setup utilizes a sequential turbocharging system, employing a small turbocharger for low-end responsiveness and a larger turbocharger for high-end power. This configuration delivers a broad torque curve, peaking at 650 Nm (479.42 lb.-ft.) between 2000 and 3600 rpm. The engine incorporates both direct injection and multi-port fuel injection, optimizing combustion efficiency and reducing emissions. The valvetrain features Dual VVT-i (Variable Valve Timing-intelligent), further enhancing performance and fuel economy. The 10-speed Direct Shift automatic transmission, a Toyota/Lexus innovation, provides smooth and quick gear changes, contributing to both performance and refinement. This transmission is designed to handle the engine’s substantial torque output and optimize fuel efficiency across a wide range of driving conditions.

Driving Characteristics

The LX 600, with its 415 horsepower and 10-speed automatic, offers a compelling driving experience, though it prioritizes comfort and capability over outright sportiness. Acceleration is brisk, with the twin-turbo V6 providing ample power for highway merging and overtaking. The 10-speed transmission is well-tuned, offering seamless shifts and keeping the engine in its optimal power band. Compared to potential higher-output variants (should Lexus offer them), this configuration strikes a balance between performance and fuel efficiency. While not as nimble as some competitors, the LX 600’s robust suspension and full-time all-wheel drive system provide a confident and stable ride, even on challenging terrain. The gear ratios are optimized for both on-road cruising and off-road crawling, making it a versatile vehicle for a variety of driving situations.

Equipment & Trim Levels

The LX 600 comes standard with a comprehensive suite of luxury features. Interior appointments include leather upholstery, wood trim, and a 12.3-inch touchscreen infotainment system. Standard safety features include Lexus Safety System+ 2.5, which encompasses pre-collision system with pedestrian detection, lane departure alert with intelligent steering assist, and dynamic radar cruise control. Available options include a Mark Levinson premium sound system, a rear-seat entertainment system, and a panoramic sunroof. Trim levels typically offer varying degrees of luxury and technology, with higher trims adding features such as massaging seats, upgraded leather, and more advanced driver-assistance systems. The base trim provides a well-equipped vehicle, while higher trims cater to buyers seeking the ultimate in luxury and convenience.

Chassis & Braking

The LX 600 utilizes a robust body-on-frame construction, inherited from the Land Cruiser, providing exceptional durability and off-road capability. The suspension system features double wishbones at the front and an independent multi-link setup at the rear, tuned for both on-road comfort and off-road articulation. Ventilated disc brakes are standard on all four wheels, with larger rotors at the front to provide ample stopping power. The LX 600 incorporates an Anti-lock Braking System (ABS) and Electronic Brake-force Distribution (EBD) for enhanced safety. Steering is rack-and-pinion with electric power assist, providing precise and responsive handling. Wheel sizes range from 20 to 22 inches, depending on the trim level.

Market Reception & Comparison

The LX 600 has been generally well-received by automotive critics, praised for its luxurious interior, comfortable ride, and capable off-road performance. However, some reviewers have noted its relatively high price and somewhat dated infotainment system. Compared to other trims, the 600 V6 Automatic represents the sweet spot in the lineup, offering a compelling balance of performance, fuel economy, and refinement. While the potential for future higher-performance variants exists, this configuration caters to the majority of LX buyers who prioritize luxury and capability over outright speed. Fuel economy is typical for a full-size luxury SUV, and reliability is expected to be excellent, given Lexus’s reputation and the Land Cruiser’s proven track record.

Legacy

The V35A-FTS engine and 10-speed automatic transmission combination in the LX 600 represents a significant step forward for the LX lineage. While long-term reliability data is still emerging, the underlying Toyota/Lexus engineering principles suggest that this powertrain will prove to be durable and dependable. In the used car market, the J300 LX 600 is expected to hold its value well, due to its reputation for luxury, capability, and reliability. This variant is likely to become a sought-after model among buyers seeking a full-size luxury SUV with a proven track record and a comfortable driving experience.