The Lexus RX 450h, specifically the facelifted fourth-generation model produced from 2019 to 2022, represents Lexus’s commitment to luxury hybrid SUVs. This variant, equipped with a 3.5-liter V6 engine paired with an electric motor and an electronically controlled continuously variable transmission (e-CVT), and the E-Four all-wheel-drive system, occupied a central position in the RX lineup, offering a balance of performance, fuel efficiency, and refinement. It built upon the success of previous RX hybrid models, further solidifying Lexus’s reputation as a pioneer in hybrid technology. The 2019 facelift brought updated styling, enhanced safety features, and refinements to the interior, maintaining the RX 450h’s competitive edge in the luxury SUV segment.
Technical Specifications
| Brand | Lexus |
| Model | RX |
| Generation | RX IV (facelift 2019) |
| Type (Engine) | 450h V6 (313 Hp) Hybrid E-Four e-CVT |
| Start of production | 2019 |
| End of production | 2022 |
| Powertrain Architecture | FHEV (Full Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 7.6 l/100 km (30.9 US mpg) |
| Fuel consumption (extra urban) | 8.4 l/100 km (28 US mpg) |
| Fuel consumption (combined) | 7.8 l/100 km (30.2 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 7.9 sec |
| Maximum speed | 180 km/h (111.85 mph) |
| Weight-to-power ratio | 6.9 kg/Hp |
| Weight-to-torque ratio | 6.4 kg/Nm |
| Battery voltage | 288 V |
| Battery technology | Nickel-metal hydride (NiMH) |
| Battery location | Under the rear seats |
| Electric motor power (1) | 167 Hp |
| Electric motor torque (1) | 335 Nm (247.08 lb.-ft.) |
| Electric motor location (1) | Integrated into the transmission |
| Electric motor type (1) | Synchronous |
| Electric motor power (2) | 68 Hp |
| Electric motor torque (2) | 139 Nm (102.52 lb.-ft.) |
| Electric motor location (2) | Rear axle, Transverse |
| Electric motor type (2) | Synchronous |
| System power | 313 Hp |
| Engine Power | 262 Hp @ 6000 rpm |
| Engine Torque | 335 Nm @ 4600 rpm (247.08 lb.-ft. @ 4600 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | 2GR-FXS |
| Engine displacement | 3456 cm3 (210.9 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 94 mm (3.7 in.) |
| Piston Stroke | 83 mm (3.27 in.) |
| Compression ratio | 13:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine oil capacity | 5.4 l (5.71 US qt | 4.75 UK qt) |
| Coolant capacity | 10.1 l (10.67 US qt | 8.89 UK qt) |
| Kerb Weight | 2147 kg (4733.32 lbs.) |
| Max. weight | 2717 kg (5989.96 lbs.) |
| Max load | 570 kg (1256.63 lbs.) |
| Trunk (boot) space – minimum | 453 l (16 cu. ft.) |
| Trunk (boot) space – maximum | 924 l (32.63 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Permitted trailer load with brakes (12%) | 1585 kg (3494.33 lbs.) |
| Length | 4889 mm (192.48 in.) |
| Width | 1895 mm (74.61 in.) |
| Height | 1720 mm (67.72 in.) |
| Wheelbase | 2789 mm (109.8 in.) |
| Front track | 1636 mm (64.41 in.) |
| Rear (Back) track | 1625 mm (63.98 in.) |
| Ride height (ground clearance) | 208 mm (8.19 in.) |
| Drag coefficient (Cd) | 0.33 |
| Minimum turning circle (turning diameter) | 11.8 m (38.71 ft.) |
| Approach angle | 17° |
| Departure angle | 24.9° |
| Ramp-over (brakeover) angle | 16.8° |
| Drivetrain Architecture | ICE drives front wheels, electric motors drive front and rear wheels. Full electric or mixed mode operation. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | automatic transmission e-CVT |
| Front suspension | Independent type McPherson |
| Rear suspension | Double wishbone |
| Front brakes | Ventilated discs, 328 mm |
| Rear brakes | Ventilated discs, 338 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 235/65 R18 |
| Wheel rims size | 8J x 18 |
INTRODUCTION
The Lexus RX 450h (facelift 2019) is a luxury mid-size SUV that represents the fourth generation of the RX line, specifically the hybrid variant. Production spanned from 2019 to 2022, building upon the foundation laid by the initial RX 450h introduced in 2005. This facelifted model is part of the RX IV series (designated AL20), which shares its platform with the Toyota Highlander. The RX 450h distinguishes itself through its sophisticated hybrid powertrain, offering improved fuel economy and reduced emissions compared to its gasoline-only counterparts. It caters to buyers seeking a premium SUV experience with a focus on environmental responsibility and advanced technology.
Powertrain & Engine Architecture
At the heart of the RX 450h is the 2GR-FXS 3.5-liter V6 engine, a naturally aspirated powerplant producing 262 horsepower at 6000 rpm and 247 lb-ft of torque at 4600 rpm. This engine utilizes multi-port fuel injection and boasts a high compression ratio of 13:1. The hybrid system integrates this engine with two electric motors – a primary motor integrated into the e-CVT and a secondary motor powering the rear axle. The combined system output reaches 313 horsepower. The e-CVT (electronically controlled continuously variable transmission) is a key component, seamlessly blending power from the engine and electric motors. The nickel-metal hydride (NiMH) battery pack, located under the rear seats, provides energy storage for the electric motors. This configuration allows for all-wheel drive capability, with the rear electric motor providing on-demand torque vectoring for enhanced stability and traction.
Driving Characteristics
The RX 450h delivers a smooth and refined driving experience. The e-CVT contributes to seamless acceleration, eliminating the stepped gear changes of a traditional automatic transmission. While not as overtly sporty as some competitors, the combined 313 horsepower provides adequate performance, achieving a 0-60 mph time of around 7.9 seconds. The electric motors provide instant torque, enhancing responsiveness during initial acceleration. The hybrid system prioritizes fuel efficiency, and the vehicle can operate in electric-only mode at lower speeds and under light loads. Compared to the standard RX 350, the 450h offers a quieter cabin experience, particularly in electric mode. The E-Four all-wheel-drive system provides confident handling in various weather conditions.
Equipment & Trim Levels
The 2019-2022 RX 450h typically came well-equipped, even in its base trim. Standard features included Lexus Safety System+, which encompassed pre-collision system with pedestrian detection, lane departure alert with steering assist, and dynamic radar cruise control. Interior amenities included leather upholstery, power-adjustable front seats, a 12.3-inch infotainment display with navigation, and a premium sound system. Higher trim levels added features such as heated and ventilated front seats, a panoramic sunroof, and Mark Levinson premium audio. Optional extras included adaptive variable suspension, color heads-up display, and triple-beam LED headlights.
Chassis & Braking
The RX 450h utilizes an independent McPherson strut front suspension and a double-wishbone rear suspension, tuned for a comfortable ride. Stabilizer bars are fitted to both axles to minimize body roll. Braking duties are handled by ventilated disc brakes on all four wheels, measuring 328mm at the front and 338mm at the rear. The vehicle is equipped with an anti-lock braking system (ABS) and electronic brake-force distribution. The E-Four all-wheel-drive system contributes to enhanced stability and traction, particularly in adverse weather conditions.
Market Reception & Comparison
The Lexus RX 450h was generally well-received by automotive critics, praised for its fuel efficiency, comfortable ride, and luxurious interior. It consistently ranked highly in reliability surveys. Compared to the RX 350, the 450h offered superior fuel economy, albeit at a slightly higher price point. Against competitors like the Acura MDX Hybrid and Volvo XC90 T8, the RX 450h stood out for its proven reliability and refined driving experience. Some critics noted that the infotainment system could be less intuitive than those offered by some rivals.
Legacy
The Lexus RX 450h (2019-2022) continues to hold a strong position in the used car market. Its reputation for reliability and fuel efficiency makes it a desirable choice for buyers seeking a luxury hybrid SUV. The powertrain, while not the most powerful in its class, has proven to be durable and relatively maintenance-free. The hybrid system components, including the battery pack, have demonstrated longevity, with many vehicles exceeding 100,000 miles without significant issues. The RX 450h remains a testament to Lexus’s commitment to hybrid technology and a popular option for those prioritizing both luxury and environmental responsibility.
