Technical Specifications
| Brand | Lexus |
| Model | RX |
| Generation | RX V |
| Type (Engine) | 450h+ (309 Hp) e-Four e-CVT |
| Start of production | December, 2022 |
| Powertrain Architecture | PHEV (Plug-in Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 1.1-1.2 l/100 km (213.8 – 196 US mpg, 256.8 – 235.4 UK mpg, 90.9 – 83.3 km/l) |
| CO2 emissions (WLTP) | 24-26 g/km |
| Fuel Type | Petrol / electricity |
| Acceleration 0 – 100 km/h | 7.0 sec |
| Acceleration 0 – 62 mph | 7.0 sec |
| Acceleration 0 – 60 mph | 6.7 sec |
| Maximum speed | 200 km/h (124.27 mph) |
| Emission standard | Euro 6 AP |
| Weight-to-power ratio | 7.2 kg/Hp, 137.9 Hp/tonne |
| Weight-to-torque ratio | 9.9 kg/Nm, 101.3 Nm/tonne |
| Gross battery capacity | 18.1 kWh |
| Battery voltage | 355.2 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Battery location | Under the rear seats |
| All-electric range (WLTP) | 65-69 km (40.39 – 42.87 mi) |
| Electric motor power | 182 Hp |
| Electric motor Torque | 270 Nm (199.14 lb.-ft.) |
| Electric motor location | Integrated into the transmission / Rear axle, Transverse |
| Electric motor type | Synchronous |
| System power | 309 Hp |
| Power | 185 Hp @ 6000 rpm |
| Torque | 227 Nm (167.43 lb.-ft.) |
| Engine layout | Front, Transverse |
| Engine Model/Code | A25A-FXS |
| Engine displacement | 2487 cm3 (151.77 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 87.38 mm (3.44 in.) |
| Piston Stroke | 103.38 mm (4.07 in.) |
| Compression ratio | 14:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection and Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.5 l (4.76 US qt | 3.96 UK qt) |
| Coolant | 8.1 l (8.56 US qt | 7.13 UK qt) |
| Kerb Weight | 2240 kg (4938.35 lbs.) |
| Max. weight | 2780 kg (6128.85 lbs.) |
| Max load | 540 kg (1190.5 lbs.) |
| Fuel tank capacity | 55 l (14.53 US gal | 12.1 UK gal) |
| Permitted trailer load with brakes (12%) | 2000 kg (4409.25 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4890 mm (192.52 in.) |
| Width | 1920 mm (75.59 in.) |
| Height | 1695 mm (66.73 in.) |
| Wheelbase | 2850 mm (112.2 in.) |
| Front track | 1650 mm (64.96 in.) |
| Rear (Back) track | 1675 mm (65.94 in.) |
| Front overhang | 1080 mm (42.52 in.) |
| Rear overhang | 960 mm (37.8 in.) |
| 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 with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 235/60 R19 |
| Wheel rims size | 8J x 19 |
The Lexus RX 450h+ e-Four, introduced in December 2022, marks Lexus’s entry into the plug-in hybrid electric vehicle (PHEV) segment within the popular RX SUV lineup. This variant builds upon the fifth generation (RX V) of the RX, renowned for its luxury, refinement, and now, increased efficiency. Positioned as a premium offering, the 450h+ aims to provide a balance between all-electric driving range and the convenience of a gasoline engine, appealing to buyers seeking a sophisticated and environmentally conscious SUV. It utilizes the GA-K platform, shared with other modern Toyota and Lexus models, and is primarily marketed towards North America, Europe, and select Asian markets.
Powertrain & Engine Architecture
The RX 450h+ utilizes a sophisticated powertrain combining a 2.5-liter, four-cylinder A25A-FXS engine with a plug-in hybrid system. The engine itself is naturally aspirated and employs both direct injection and multi-port fuel injection for optimized combustion efficiency. It produces 185 horsepower at 6000 rpm and 167.43 lb-ft of torque. The hybrid system consists of two electric motors: a 182 hp motor integrated with the e-CVT and a 54 hp motor powering the rear axle. This configuration allows for all-wheel drive capability and the ability to operate in full electric mode, hybrid mode, or a combination of both. The total system output is rated at 309 horsepower. The 18.1 kWh lithium-ion battery pack, located under the rear seats, provides an all-electric range of 65-69 km (40-43 miles) according to WLTP standards. The e-CVT (electronically controlled continuously variable transmission) is a key component, seamlessly blending power from the engine and electric motors.
Driving Characteristics
The RX 450h+ offers a refined and comfortable driving experience. In full electric mode, acceleration is brisk and quiet, making it ideal for city driving. When the gasoline engine engages, the transition is nearly seamless. While not as overtly sporty as some competitors, the 309 hp combined output provides adequate power for highway merging and passing maneuvers. The e-CVT prioritizes efficiency over aggressive gear changes, resulting in a smooth, but sometimes less engaging, driving feel compared to traditional automatic transmissions. The all-wheel drive system provides enhanced traction in various weather conditions. Compared to the standard RX 350, the 450h+ offers significantly improved fuel economy and the benefit of electric-only driving. It differs from other RX hybrid models (like the 450h) by offering plug-in charging capability and a larger battery for extended electric range.
Equipment & Trim Levels
The RX 450h+ typically comes well-equipped with standard features including Lexus Safety System+ 3.0 (pre-collision system, lane departure alert, adaptive cruise control), a 14-inch touchscreen infotainment system, premium audio system, heated and ventilated front seats, and leather upholstery. Higher trim levels add features such as a panoramic sunroof, Mark Levinson premium sound system, head-up display, and advanced parking assist technologies. Interior color options generally include black, gray, and cream, with various wood or aluminum trim accents available. Optional extras often include a cold-weather package (heated steering wheel, windshield de-icers) and a luxury package (enhanced leather, upgraded audio).
Chassis & Braking
The RX 450h+ utilizes an independent suspension system, with McPherson struts at the front and a multi-link setup at the rear, optimized for ride comfort and handling. Stabilizer bars are included on both axles to reduce body roll. The vehicle is equipped with ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic brake-force distribution are standard safety features. The chassis is designed to manage the added weight of the battery pack without compromising handling dynamics. The suspension tuning is geared towards a comfortable ride rather than aggressive cornering.
Market Reception & Comparison
The Lexus RX 450h+ has been generally well-received by automotive critics, praised for its luxurious interior, smooth ride, and impressive fuel efficiency. Its plug-in hybrid capability and all-electric range are seen as significant advantages in the growing PHEV market. Compared to other PHEV SUVs in its class, such as the Volvo XC60 Recharge and the BMW X5 xDrive45e, the RX 450h+ often stands out for Lexus’s reputation for reliability and its comfortable, quiet cabin. However, some reviewers have noted that its infotainment system can be complex to navigate and that its driving dynamics are not as sporty as some competitors. Fuel economy is a strong point, with the PHEV system delivering exceptional MPG figures when utilizing both electric and gasoline power.
Legacy
The RX 450h+ represents Lexus’s commitment to electrification and sustainable mobility. While it is still relatively new to the market, early indications suggest that the powertrain is proving to be reliable. The hybrid system components, particularly the electric motors and battery pack, are covered by Lexus’s comprehensive warranty. As a used vehicle, the RX 450h+ is expected to hold its value well due to its luxury brand status, fuel efficiency, and advanced technology. The long-term durability of the battery pack will be a key factor in its overall reliability and resale value. The 450h+ is poised to become a significant player in the luxury PHEV SUV segment, offering a compelling combination of performance, efficiency, and refinement.
