The Lexus RX 450h, specifically the facelifted model produced from 2012 to 2015, represents a significant iteration of Lexus’s popular luxury crossover SUV. Positioned as a premium offering within the RX lineup, the 450h combined a 3.5-liter V6 gasoline engine with a nickel-metal hydride (NiMH) battery-powered electric motor, delivering a total system output of 299 horsepower. This model year saw a refresh to the third-generation RX (RX III), incorporating styling updates and refined technology. The RX 450h was a key component of Lexus’s hybrid strategy, aimed at providing a luxurious and fuel-efficient alternative to traditional gasoline-powered SUVs in the North American and global markets.
Technical Specifications
| Brand | Lexus |
| Model | RX |
| Generation | RX III (facelift 2012) |
| Type (Engine) | 450h (299 Hp) Hybrid e-CVT |
| Start of production | 2012 |
| End of production | 2015 |
| Powertrain Architecture | FHEV (Full Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 6.1-6.2 l/100 km (38.6 – 37.9 US mpg) |
| Fuel consumption (extra urban) | 5.9-6 l/100 km (39.9 – 39.2 US mpg) |
| Fuel consumption (combined) | 6-6.1 l/100 km (39.2 – 38.6 US mpg) |
| CO2 emissions | 140 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.2 sec |
| Acceleration 0 – 62 mph | 8.2 sec |
| Acceleration 0 – 60 mph | 7.8 sec |
| Maximum speed | 180 km/h (111.85 mph) |
| Emission standard | Euro 5 |
| Weight-to-power ratio | 6.9 kg/Hp |
| Weight-to-torque ratio | 6.5 kg/Nm |
| Gross battery capacity | 1.9 kWh |
| Battery voltage | 288 V |
| Battery technology | Nickel-metal hydride (NiMH) |
| Battery weight | 69 kg (152.12 lbs) |
| Battery location | Under the rear seats |
| Electric motor power | 167 Hp |
| Electric motor Torque | 335 Nm (247.08 lb.-ft.) |
| Electric motor location | Integrated into the transmission |
| Electric motor type | Synchronous |
| System power | 299 Hp |
| Engine Power | 249 Hp @ 6000 rpm |
| Engine Torque | 317 Nm @ 4800 rpm (233.81 lb.-ft. @ 4800 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | 2GR-FXE |
| 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 | 12.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC, VVT-i |
| Engine oil capacity | 6.1 l (6.45 US qt | 5.37 UK qt) |
| Coolant capacity | 11.4 l (12.05 US qt | 10.03 UK qt) |
| Kerb Weight | 2050-2110 kg (4519.48 – 4651.75 lbs) |
| Max. weight | 2615 kg (5765.09 lbs) |
| Max load | 505-565 kg (1113.33 – 1245.61 lbs) |
| Trunk (boot) space – minimum | 496 l (17.52 cu. ft.) |
| Trunk (boot) space – maximum | 1570 l (55.44 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Length | 4770 mm (187.8 in.) |
| Width | 1885 mm (74.21 in.) |
| Width including mirrors | 2120 mm (83.46 in.) |
| Height | 1685 mm (66.34 in.) |
| Wheelbase | 2740 mm (107.87 in.) |
| Front track | 1630 mm (64.17 in.) |
| Rear track | 1620 mm (63.78 in.) |
| Front overhang | 1000 mm (39.37 in.) |
| Rear overhang | 1030 mm (40.55 in.) |
| Minimum turning circle | 12.2 m (40.03 ft.) |
| Drivetrain | Front wheel drive. FHEV. |
| Number of gears | automatic transmission e-CVT |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Double wishbone |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Tires size | 235/60 R18; 235/55 R19 |
| Wheel rims size | 7.5J x 18; 7.5J x 19 |
INTRODUCTION
The 2012-2015 Lexus RX 450h facelift built upon the success of the second-generation RX Hybrid, offering a refined and technologically advanced luxury SUV experience. It’s built on the Lexus/Toyota K platform (specifically the 1HX0 variant for the RX). The RX 450h aimed to appeal to buyers seeking a balance between fuel efficiency, luxury, and practicality. The facelift brought subtle but noticeable changes to the exterior styling, including a revised front grille, headlights, and taillights, along with interior enhancements focused on improving comfort and technology. It competed directly with other luxury hybrid SUVs, such as the Acura RDX and Lincoln MKX.
Powertrain & Engine Architecture
At the heart of the RX 450h lies the 2GR-FXE 3.5-liter V6 gasoline engine. This engine utilizes Toyota’s D-4S direct-injection system, combined with port fuel injection, to optimize combustion efficiency and power delivery. The engine produces 249 horsepower at 6000 rpm and 233.81 lb-ft of torque at 4800 rpm. The engine features a double overhead camshaft (DOHC) valvetrain with Variable Valve Timing-intelligent (VVT-i) technology, further enhancing performance and fuel economy. The electric motor, a synchronous type, contributes an additional 167 horsepower and 247.08 lb-ft of torque. The combined system output is 299 horsepower. The powertrain utilizes a unique electronically controlled continuously variable transmission (e-CVT) – a key component of Toyota’s Hybrid Synergy Drive system. This e-CVT doesn’t have traditional gears; instead, it uses a planetary gearset to seamlessly blend power from the gasoline engine and electric motor, optimizing efficiency and responsiveness.
Driving Characteristics
The RX 450h’s e-CVT provides a smooth and linear acceleration experience, differing significantly from the stepped gear changes of a conventional automatic transmission. While not offering the sporty responsiveness of some competitors, the RX 450h delivers adequate performance for everyday driving, achieving 0-60 mph in approximately 7.8 seconds. The electric motor provides instant torque, contributing to brisk acceleration from a standstill. The hybrid system prioritizes fuel efficiency, and the vehicle frequently operates in electric-only mode at lower speeds, resulting in a quiet and refined driving experience. Compared to the standard RX 350, the 450h offers a more relaxed and refined driving experience, prioritizing comfort and efficiency over outright performance. The e-CVT, while smooth, can sometimes feel less engaging than a traditional automatic, particularly during aggressive driving.
Equipment & Trim Levels
The RX 450h was typically well-equipped, even in its base trim. Standard features included leather upholstery, power-adjustable front seats, a rearview camera, Bluetooth connectivity, and a premium audio system. Available options included a navigation system, Mark Levinson premium sound system, heated and ventilated front seats, adaptive cruise control, and a panoramic sunroof. Trim levels varied slightly depending on the market, but generally included base, Luxury, and F Sport packages. The F Sport package added sport-tuned suspension, unique exterior styling elements, and interior trim upgrades. Interior materials were generally high quality, reflecting Lexus’s commitment to luxury and craftsmanship.
Chassis & Braking
The RX 450h features a fully independent suspension system, with McPherson struts at the front and a double wishbone setup at the rear. This suspension configuration provides a comfortable and controlled ride. 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 (EBD) are standard features. The RX 450h’s weight, ranging from 2050 to 2110 kg (4519.48 – 4651.75 lbs), is higher than the standard RX 350 due to the added weight of the hybrid system components. This increased weight can slightly impact handling, but the well-tuned suspension helps to mitigate this effect.
Market Reception & Comparison
The Lexus RX 450h was generally well-received by critics and consumers alike. It was praised for its fuel efficiency, comfortable ride, and luxurious interior. However, some critics noted that its handling was not as sporty as some competitors. Compared to the RX 350, the 450h offered significantly better fuel economy, but at a higher price point. The RX 450h also offered a quieter and more refined driving experience, thanks to the electric motor and e-CVT. Against rivals like the Acura RDX and Lincoln MKX, the RX 450h stood out for its reliability and strong resale value.
Legacy
The 2012-2015 Lexus RX 450h has proven to be a reliable and durable vehicle. The Hybrid Synergy Drive system is known for its longevity, and many RX 450h models have accumulated high mileage with minimal issues. On the used car market, the RX 450h continues to be a popular choice, commanding a premium price compared to the standard RX 350. The battery pack, while a potential concern for some buyers, has proven to be quite durable, with many lasting well over 100,000 miles. The RX 450h represents a significant step forward in Lexus’s hybrid technology and continues to be a benchmark for luxury hybrid SUVs.
