Lexus GS 450h: 340bhp Hybrid Luxury Sedan Review

The Lexus GS 450h stands as a landmark in automotive engineering, introducing the world’s first rear-wheel-drive hybrid powertrain to the luxury sedan segment. Launched around 2006, this model combines a potent 3.5-liter V6 petrol engine with a high-output electric motor, delivering the thrust of a V8 while achieving fuel economy akin to smaller vehicles. This fusion not only challenges traditional performance norms but also elevates refinement to new heights, making it a compelling alternative for executives seeking both speed and serenity.

Powertrain Mastery: Seamless Hybrid Performance

At the heart of the GS 450h lies its sophisticated hybrid system, pairing a 292bhp 3.5-liter V6 with a 147kW (approximately 197bhp) electric motor for a combined output of around 340-341bhp and 368Nm of torque. This setup propels the sedan from 0-60mph in just 5.9 seconds, outpacing many contemporaries despite its 1,930kg curb weight. The electric motor provides instant torque for brisk launches and urban cruising, often allowing the petrol engine to remain dormant at low speeds, resulting in whisper-quiet operation.

Acceleration feels linear and effortless, thanks to the continuously variable transmission (CVT) or six-speed automatic in later iterations, which eliminates gear shifts for uninterrupted power delivery. Mid-range punch shines in 30-70mph overtakes, clocked at 5.2 seconds in tests, making highway merging safe and confident. While the V6 emits a refined growl under full throttle, the overall experience prioritizes smoothness over raw aggression.

Driving Dynamics: Comfort Over Sportiness

Designed for effortless grand touring, the GS 450h excels in delivering a supple ride that soaks up road imperfections with poise. Its suspension tuning favors compliance, floating over bumps in near silence, complemented by excellent wind and tire noise suppression. Rear-wheel drive ensures balanced handling, aided by stability control that intervenes subtly to maintain traction.

However, enthusiasts may find it lacking in engagement. The light steering offers minimal feedback, and the CVT’s rubber-band effect—where engine revs hold high during acceleration—dulls the sense of connection. Brakes feel wooden initially but build progressive feel, while body control on undulating roads could be sharper compared to BMW 5 Series rivals. Ultimately, it’s a car for relaxed drives rather than track days, prioritizing passenger comfort with features like adaptive cruise control and multi-adjustable seats.

Interior Excellence: Premium Craftsmanship

Step inside, and the GS 450h envelops occupants in Lexus’s signature quality. The cabin boasts supple leather, wood accents, and meticulous assembly, with ample space for four adults. Rear legroom is generous, and the boot offers practical capacity despite the battery pack.

Technology abounds: high-resolution displays, Mark Levinson premium audio, head-up display, and intuitive controls define the flagship Sport Luxury trim. Safety is comprehensive with five-star ratings, 10 airbags, blind-spot monitoring, tire pressure sensors, and advanced parking aids including reverse cameras. Three-zone climate control and fatigue monitors enhance long-haul comfort.

Efficiency and Practicality: Hybrid Advantages

Defying its performance credentials, the GS 450h achieves combined economy of 35.8-46.3mpg, with real-world figures around 6.3L/100km (44mpg). CO2 emissions hover at 141-147g/km, qualifying for tax incentives over some diesels. Regenerative braking recharges the battery during coasting, reducing fuel use by up to 20% over non-hybrids.

At launch, pricing started around £40,980-£50,000, positioning it against premium Germans. Running costs benefit from Lexus’s renowned reliability and capped servicing.

• Fuel Economy: Official 35.8mpg combined, strong urban EV mode
• Emissions: 141g/km, competitive for power output
• Weight: 1,910-1,930kg, well-managed for hybrid
• Transmission: CVT or 6-speed auto, smooth but not sporty

Design and Presence: Bold Lexus Styling

The GS 450h’s exterior exudes executive poise with its elongated wheelbase, spindle grille (in facelifts), and sleek lines. Bi-xenon headlights with cornering functions and 18-inch alloys enhance its road presence. It’s understated yet distinctive, avoiding ostentation while signaling luxury.

Pros and Cons: Balanced Verdict

• Pros: Explosive hybrid performance, serene ride, luxurious interior, strong efficiency, top safety
• Cons: Limited steering feel, CVT drone, less engaging than BMW, higher price point

In comparisons, it outperforms in refinement and hybrid tech but trails sportier rivals in driver involvement.

Ownership Experience: Reliability and Costs

Lexus owners praise the GS 450h’s durability, with hybrid batteries proving long-lasting. Dealer networks offer peace of mind, though parts can be pricey. It’s ideal for company car users leveraging low BIK rates.

FAQ

What is the 0-60mph time for the Lexus GS 450h?

Around 5.9 seconds, thanks to the combined 340bhp hybrid system.

How fuel-efficient is the GS 450h?

Official figures claim 35.8-46.3mpg combined, with real-world results near 44mpg.

Is the GS 450h rear-wheel drive?

Yes, it’s the first production rear-wheel-drive hybrid sedan.

How does it compare to BMW 5 Series?

More refined and efficient but less dynamically engaging.

What safety features does it have?

Five-star rating, 10 airbags, blind-spot monitoring, adaptive cruise, and more.