The Lexus TX 500h, introduced in October 2023, represents Lexus’s entry into the three-row luxury SUV segment, positioned above the smaller RX. This variant, boasting a combined system output of 366 horsepower, utilizes Lexus’s DIRECT4 all-wheel-drive system and an electronically controlled continuously variable transmission (ECT-i). It’s designed to offer a balance of performance, efficiency, and family-oriented practicality, targeting buyers seeking a premium SUV experience with hybrid technology. The TX 500h is built on a stretched version of the GA-K platform, shared with other Toyota and Lexus models, and aims to compete with vehicles like the Acura MDX and Infiniti QX60.
Technical Specifications
| Brand | Lexus |
| Model | TX |
| Generation | TX |
| Type (Engine) | 500h (366 Hp) Hybrid DIRECT4 ECT-i |
| Start of production | October, 2023 |
| Powertrain Architecture | FHEV (Full Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 6 |
| Doors | 5 |
| Fuel consumption (urban) | 8.7 l/100 km (27 US mpg, 32.5 UK mpg, 11.5 km/l) |
| Fuel consumption (extra urban) | 8.4 l/100 km (28 US mpg, 33.6 UK mpg, 11.9 km/l) |
| Fuel consumption (combined) | 8.7 l/100 km (27 US mpg, 32.5 UK mpg, 11.5 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 6.1 sec |
| Maximum speed | 180 km/h (111.85 mph), Electronically limited |
| Emission standard | SULEV |
| Weight-to-power ratio | 6.1 kg/Hp, 163 Hp/tonne |
| Weight-to-torque ratio | 4.1 kg/Nm, 245 Nm/tonne |
| Gross battery capacity | 1.4 kWh |
| Battery voltage | 288 V |
| Battery technology | Nickel-metal hydride (NiMH) |
| Battery location | Under the rear seats |
| Electric motor power (1) | 85 Hp |
| Electric motor Torque (1) | 292 Nm @ 2000-3000 rpm (215.37 lb.-ft. @ 2000-3000 rpm) |
| Electric motor location (1) | Between the combustion engine and the transmission |
| Electric motor type (1) | Synchronous |
| Electric motor power (2) | 101 Hp |
| Electric motor Torque (2) | 168 Nm @ 2000-3000 rpm (123.91 lb.-ft. @ 2000-3000 rpm) |
| Electric motor location (2) | Rear axle, Transverse |
| Electric motor type (2) | Synchronous |
| System power | 366 Hp |
| System torque | 550 Nm (405.66 lb.-ft.) |
| Power | 271 Hp @ 6000 rpm |
| Torque | 460 Nm @ 2000-3600 rpm (339.28 lb.-ft. @ 2000-3600 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | T24A-FTS |
| Engine displacement | 2393 cm3 (146.03 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 87.5 mm (3.44 in.) |
| Piston Stroke | 99.5 mm (3.92 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection and Multi-port manifold injection |
| Engine aspiration | Twin-scroll turbo, Intercooler |
| Valvetrain | DOHC, VVT-i |
| Engine oil capacity | 5.3 l (5.6 US qt | 4.66 UK qt) |
| Coolant | 11.5 l (12.15 US qt | 10.12 UK qt) |
| Kerb Weight | 2245-2254 kg (4949.38 – 4969.22 lbs.) |
| Max. weight | 2864 kg (6314.04 lbs.) |
| Max load | 610-619 kg (1344.82 – 1364.66 lbs.) |
| Trunk (boot) space – minimum | 572 l (20.2 cu. ft.) |
| Trunk (boot) space – maximum | 2747 l (97.01 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Permitted trailer load with brakes (12%) | 2268 kg (5000.08 lbs.) |
| Length | 5170 mm (203.54 in.) |
| Width | 1990 mm (78.35 in.) |
| Height | 1780 mm (70.08 in.) |
| Wheelbase | 2950 mm (116.14 in.) |
| Front track | 1713 mm (67.44 in.) |
| Rear (Back) track | 1721 mm (67.76 in.) |
| Front overhang | 1060 mm (41.73 in.) |
| Rear overhang | 1160 mm (45.67 in.) |
| Ride height (ground clearance) | 203 mm (7.99 in.) |
| Drag coefficient (Cd) | 0.34 |
| Minimum turning circle (turning diameter) | 11 m (36.09 ft.) |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs, 399 mm |
| Rear brakes | Ventilated discs, 338 mm |
| Gearbox | 6 gears, automatic transmission ECT-i |
Powertrain & Engine Architecture
The TX 500h’s powertrain centers around the 2.4-liter T24A-FTS inline-four cylinder engine. This engine utilizes a combination of direct injection and multi-port fuel injection to optimize combustion efficiency and power delivery. It’s turbocharged with a twin-scroll turbocharger and features an intercooler to manage intake air temperature. The engine produces 271 horsepower and 339.28 lb-ft of torque. The hybrid system incorporates two electric motors: one positioned between the engine and the transmission, and another driving the rear axle. The front motor contributes 85 hp and 215.37 lb-ft of torque, while the rear motor adds 101 hp and 123.91 lb-ft. The combined system output is 366 horsepower and 405.66 lb-ft of torque. The DIRECT4 all-wheel-drive system intelligently distributes power between the front and rear axles, adjusting the front/rear torque split continuously based on driving conditions. The transmission is a six-speed electronically controlled continuously variable transmission (ECT-i), designed for smooth and efficient power delivery. The nickel-metal hydride (NiMH) battery pack, with a capacity of 1.4 kWh, is located under the rear seats.
Driving Characteristics
The TX 500h delivers brisk acceleration, achieving 0-60 mph in 6.1 seconds. The electric motors provide instant torque, supplementing the turbocharged engine for responsive acceleration, particularly at lower speeds. The ECT-i transmission contributes to a smooth driving experience, eliminating traditional gear shifts. While the CVT doesn’t offer the same tactile feel as a traditional automatic, it optimizes engine efficiency. The DIRECT4 system provides confident all-wheel-drive traction in various conditions. Compared to a hypothetical TX 350 with a naturally aspirated V6, the 500h offers quicker acceleration and superior fuel economy. Compared to a potential TX 450h+ plug-in hybrid, the 500h prioritizes performance over extended all-electric range.
Equipment & Trim Levels
The TX 500h comes standard with a comprehensive suite of features, including Lexus Safety System+ 3.0, which incorporates advanced driver-assistance technologies like pre-collision system with pedestrian detection, lane departure alert with intelligent steering assist, and dynamic radar cruise control. Interior features include premium synthetic leather upholstery, a 12.3-inch touchscreen infotainment system, wireless Apple CarPlay and Android Auto compatibility, and a premium sound system. Available options include genuine leather upholstery, a panoramic sunroof, a Mark Levinson premium audio system, and a head-up display. Trim levels typically offer increasing levels of luxury and technology, with higher trims adding features like ventilated seats, upgraded interior trim, and advanced parking assist systems.
Chassis & Braking
The TX 500h features an independent suspension system, with McPherson struts at the front and a multi-link setup at the rear. Stabilizer bars are included at both ends to reduce body roll during cornering. The braking system consists of ventilated discs on all four wheels, with larger discs at the front (399mm) compared to the rear (338mm). The vehicle is equipped with ABS (Anti-lock braking system) and other electronic stability control systems. The steering system is an electric power steering rack and pinion, providing precise and responsive steering feel.
Market Reception & Comparison
Initial reviews of the Lexus TX 500h have been generally positive, with critics praising its comfortable ride, spacious interior, and strong performance. The hybrid powertrain delivers competitive fuel economy for its class, achieving 27 mpg combined. Some reviewers have noted that the CVT transmission can feel less engaging than a traditional automatic. Compared to competitors like the Acura MDX, the TX 500h offers a more refined interior and a smoother ride, but may not be as sporty to drive. The TX 500h’s reliability is expected to be high, consistent with Lexus’s reputation for build quality and durability.
Legacy
The Lexus TX 500h represents a significant addition to Lexus’s lineup, expanding its presence in the three-row luxury SUV segment. The powertrain, while relatively new, is based on proven hybrid technology from Toyota and Lexus, suggesting long-term reliability. As the model matures, its reputation for dependability and resale value will likely solidify its position in the used car market. The DIRECT4 system and the efficient hybrid powertrain demonstrate Lexus’s commitment to innovation and sustainability.
