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By Cars.com Staff
July 1, 2010
Vehicle Overview The Lexus GS 450h hybrid sport sedan emphasizes performance over fuel efficiency, with its gasoline engine and hybrid motors combining to make 340 horsepower, which about matches the 342-hp V-8 engine in the GS 460. The GS 450h has no hybrid competitors. The hybrid is a smidge faster than the GS 460. Lexus says the GS 450h can accelerate from zero to 60 mph in 5.2 seconds, while the GS 460 takes 5.4 seconds. The GS 450h's combined city/highway gas mileage is 23 mpg. That means it sips gas on par with the V-6-powered GS 350. There's a more compelling case when it's compared with the V-8-equipped GS 460, which has a lower combined city/highway estimate.
New for 2011 Other GS models added a brake override system for 2011, but it already was standard on the GS 450h.
Exterior Virtually identical to the GS 350 and GS 460 sedans, the GS 450h sports Lexus' familiar face with its angular headlights and grille. An adaptive suspension continually senses road conditions to modify damping appropriately. A Sport mode incorporates tighter damping, and an optional active stabilizer system mitigates body roll even more. Exterior features include:
Rain-sensing windshield wipers
Special 18-inch wheels
Interior An electric-power meter replaces the tachometer in the leftmost instrument pod, while a dashboard information screen displays energy consumption statistics and an animation of real-time power routing. Otherwise, the GS 450h's interior is identical to other GS models, including the cramped backseat. Because of intrusion from the hybrid system's batteries, trunk volume shrinks. Interior features include:
Standard heated leather seats
Standard ventilated front seats
Standard dual-zone automatic climate control
Available electric rear sunshade
Standard 10-speaker audio system
Available navigation system
Available 14-speaker audio system
Under the Hood The GS 450h's 3.5-liter V-6 engine is shared with other Lexus models. Mechanical features include:
3.5-liter V-6 makes 292 hp, not including the electric motors
V-6 teams with two electric motors — one to start the gas engine, the other to boost acceleration — for a combined 340 hp
Regenerative braking to charge the batteries for electric motors
Engine shutoff when car is at a standstill
Can move solely on electric power during light-load situations
Continuously variable automatic transmission
Safety A full complement of electronic safety features centers around Lexus' Vehicle Dynamics Integrated Management system, which is standard. Safety features include:
Electronic stability system
Adaptive front lighting system swivels the headlights several degrees during turns to better illuminate corners
Side curtain airbags
Available adaptive cruise control can sense impending collisions and alert the driver
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