2013 Lexus GS 450h Information


2013 Lexus GS 450h Front

The 2013 Lexus GS 450h will have its official reveal tomorrow at the Frankfurt Motor Show, but Lexus has gone ahead and released information, photos & video of their new hybrid sports sedan — let’s start with the Lexus USA press release, which I’m republishing here in full:

2013 Lexus GS 450h Grille

FRANKFURT – Sept. 12, 2011 – With a five vehicle hybrid line-up, Lexus reinforces its commitment to hybrid technology with the all-new 2013 GS 450h. When it was introduced for the 2007 model year, the GS 450h was the first hybrid-powered luxury sport sedan to enter the market. Today, the GS 450h is the world’s first premium performance sedan to be equipped with a V6 Atkinson cycle gas engine and two-motor hybrid system, in a front engine rear-wheel drive vehicle.

The hybrid version of the 2013 GS 350 incorporates improvements to its hybrid powertrain and is equipped with a second generation Lexus Hybrid Drive system. GS 450h engineers have aimed for reductions in fuel consumption and emissions, while providing exhilarating performance.

With a total system power output of 338 hp, the GS 450h will accelerate effortlessly from 0-60 mph in 5.6 seconds. Conversely, fuel consumption is expected to be improved by more than 30 percent. The GS 450h is targeting certification as a Super-Ultra Low Emissions Vehicle II (SULEV II). The new GS hybrid also features a Drive Mode selector. In addition to the Normal mode, the driver can customize the driving experience using Eco, Sport S, Sport S+ and EV modes.

2013 Lexus GS 450h Angle

“The all-new GS 450h will provide our customers with an exciting blend of performance and precision in a new hybrid package,” said Mark Templin, Lexus group vice president and general manager in the U.S. “With its dynamic exterior styling, roomy interior and advanced technology features, the GS 450h further demonstrates Lexus’ mastery of the luxury hybrid.”

Engine/Transmission/Drivetrain/Performance

Lexus GS 450h Monitor

As with all Lexus hybrid vehicles, the new GS 450h is a full hybrid capable of operating in gas-only or electric-only modes, as well as a combination of both. Its Lexus Hybrid Drive system features an ultra-smooth running, Atkinson cycle 3.5-liter V6 engine mated to a compact, high-output, water-cooled permanent magnet electric motor. The two powerplants drive the rear wheels both independently and in tandem, as needed.

In addition to the gas engine and electric motor, the new GS 450h’s hybrid drive system a generator; a high-performance nickel-metal hydride battery; a power split device which, via planetary reduction gears, combines and re-allocates power from the engine, electric motor and generator according to operational requirements; and a compact power control unit to govern the high speed interaction of the system components.

Adapted specifically for the hybrid powertrain and a first for premium performance sedans, the 3.5-liter V6, DOHC engine benefits from several technical improvements including the adoption of the Atkinson Cycle engine design to optimize the fuel-efficient benefits of Lexus Hybrid Drive.

Compression is delayed in an Atkinson Cycle engine, because the intake valves close late. This creates a high expansion ratio for less compression, reducing intake and exhaust energy losses and converting combustion energy to engine power more effectively.

A high compression ratio of 13:1; a new, mid-port intake tumble generator; and the adoption of the latest evolution of Lexus’ four-stroke, direct injection technology, D-4S, help the GS 450h achieve better fuel consumption.

With one injector installed in the combustion chamber and a second mounted in the intake port, D-4S combines the strengths of both direct and port injection, realizing optimum engine efficiency throughout the power band and improving torque across the rev range, while minimizing fuel consumption and emissions.

The D-4S system features new slit-type injector nozzles with a modified port shape, a higher fuel pressure for more efficient combustion, and idle port injection for improved NHV characteristics.

Engine noise, vibration and friction have been lowered through the adoption of lightweight chain technology.

The cooling performance of the hybrid system’s Power Control Unit (PCU) helps reduce fuel consumption and has been improved through the adoption of dual cooling paths and a single-piece, integrated AC/DC converter.

System control has been enhanced. The PCU boosts motor drive voltage to a maximum 650V in Sport mode and limits it to a maximum of 500V in Eco mode under normal driving conditions where maximum output is not required. The motor is driven at lower voltage to provide a more environmentally–advanced driving performance to help enhance fuel efficiency.

The electric motor features lighter mounts and reduced friction. The system’s regenerative braking operation range has been expanded, contributing to further improvements in fuel efficiency. In addition, the battery layout has been redesigned. A new stacked configuration maximizing luggage space allows the 2013 GS 450h to have more cargo area than the previous generation gas model.

Chassis/Body/Suspension/Tires/Brakes

2013 Lexus GS 450h Wheel

All second-generation GS hybrid models have a new platform that is designed to be more rigid compared to the previous models. Engineers conducted extensive platform testing, ultimately increasing the number of spot welds and adding laser welds in very specific locations. The track works in combination with a revised suspension design to assure a more solid stance and superior cornering performance.

The new suspension system is designed to help guide the 2013 GS through corners with precision. In the front, upper and lower control arms are made from aluminum and employ larger bushings. The rear subframe has been completely redesigned to accommodate an all-new multi-link rear suspension, using improved suspension geometry that retains tire cornering force and enhances rear control. With the stiffer platform and lighter components, the shocks can use lighter-viscosity oil, so they move easily and respond to small inputs more quickly.

The use of front and rear aluminum control arms helps reduce unsprung weight and results in significant improvements in agility, roll damping, ride comfort, body control and steering precision. Overall, the suspension is lighter and stronger, allowing it to react to driver input readily, and ride quietly without harshness. Ventilated disc brakes featuring four-piston aluminum front calipers includes the latest electronic enhancements to help provide braking balance and control.

The GS 450h also offers the Lexus Dynamic Handling system, an integrated four-wheel steering system. The leading edge platform technology of the Lexus Dynamic Handling system offers Lexus’ first integration of Adaptive Variable Suspension (AVS); Dynamic Rear Steering (DRS); Variable Gear Ratio Steering (VGRS); and the latest generation of Lexus’ unique Vehicle Dynamics Integrated Management (VDIM) system to help coordinate every aspect of front and rear wheel control and provide agile, sharp and confident driving behavior with a more direct response to the driver’s actions.

The Lexus Dynamic Handling system integrates the control of the Electric Power Steering (EPS), VGRS and newly developed DRS. Monitoring vehicle speed, steering direction and driver inputs, the system calculates the optimum angle for all four wheels. Using VGRS to the front and DRS to the rear, the system can independently control both front and rear wheel steering angles to help improve turn-in response, rear grip, vehicle stability and overall agility when cornering.

The DRS system monitors vehicle speed and yaw rate, steering angle and speed, and lateral G to calculate the required rear wheel steering input, to a maximum of 1.5 degrees. At speeds below 50 mph the front and rear wheels turn in opposite directions. At speeds over 50 mph, front and rear wheels turn in the same direction.

Further coordinating DRS with VGRS, AVS and VDIM, the Lexus Dynamic Handling system will automatically customize the adaptive suspension tuning and active safety systems to suit road conditions, vehicle speed and driving style, giving customers confidence to experience the new GS’ exceptional driving performance.

The standard 17-inch alloy wheels are paired with 225/50R17 tires while the optional 18-inch alloy wheels are equipped with 235/45R18 tires. The GS 450h’s Electronically Controlled Braking (ECB) system characteristics have been modified to provide greater responsiveness from the first touch of the pedal.

Safety/Security Features

2013 Lexus GS 450h Heads Up Display

Like the GS 350, the GS 450h will be standard equipped with 10 airbags, including a knee airbag for both driver and front passenger. Rear seat occupants have seat-mounted side airbags, and all four outboard occupants are equipped with side curtain airbags. Also standard are new Whiplash Injury Lessening (WIL) front seats that reduce the space between the occupant’s head and headrest, to help limit excessive head movement, and help decrease the severity of whiplash-type injuries in certain types of collisions. Standard seatbelts with pretensioners with force limiters used for front and outboard rear seats further assist occupant protection.

Available options to help further enhance safety include a pre-collision system, which uses the dynamic radar cruise control system to provide early warning of upcoming objects that might result in a collision. The system also uses a Lexus first infrared camera to monitor the driver’s eyes to check on driver status. In the event that the driver does not appear to be looking forward when a collision appears imminent, the system will initiate the warning at an earlier threshold. If the driver still does not respond and make the appropriate maneuver, the system will initiate light braking intervention up to two seconds prior to impact, designed to help to lessen the severity of the collision.

Other available safety systems include a Night Vision System that enhances driver visibility at night; Heads Up Display (HUD); a Blind Spot Monitor that helps detect vehicles in rear/side blind spots; and Lane Keep Assist (LKA) with Lane Departure Warning (LDW). LKA provides a small amount of active steering torque to help maintain course, while the LDW feature alerts the driver if the system detects that the vehicle is beginning to drift out of the lane.

Exterior Design

2013 Lexus GS 450h Rear

The 2013 GS expresses a new generation of Lexus’ design philosophy with its precisely sculpted exterior and will lead the rest of the lineup in an entirely new direction. When designers shaped the GS they visualized the flow of air around it and, like the LFA supercar, maximized aerodynamic efficiency.

Exclusive to the hybrid model is a unique three-lamp design that aligns the turn signal and Lexus-first high and low beam LED lamps in a single horizontal row. The improved illumination and beam range provided by LED lamps offers better visibility even under low beam driving conditions. In addition, the rear bumper of the GS 450h covers the exhaust pipe apertures. The GS 450h can also be distinguished by Lexus’ signature blue hybrid badging.

The GS fuses distinctive style with engineering functionality. Fins incorporated into the side of the tail lamps and the design of the trunk area all help direct air over and past the car. The rear bumper underbody area was designed for reduced wind resistance to help keep the car steady. Finally, air inlets located on the outer edges of the lower grille serve as cooling ducts.

The signature spindle grille with its trapezoidal contours evolved from current Lexus styling and fully integrates into the aggressive front bumper allowing for efficient airflow. This distinctive Lexus design feature combined with the deep-set, high-tech headlamps and L-shaped LED daytime running lamps further express the vehicle’s confident and dynamic character.

From the side, the GS projects the image of a spacious sport sedan with a road-hugging wider stance. The tapered lower rocker panel and the short front overhang give the vehicle a sense of motion. Width-enhancing front and rear wheel arches adds an athletic stance enhancing the vehicle’s dynamic presence.

The rear bumper features centered aero fins to help control underbody airflow. Combined with the L-shaped LED tail lamps, a Lexus design cue, these rear bumper features lend a high-performance appearance. Overall, the new GS sheet metal represents a significant extension of the Lexus L-finesse philosophy that is the core of all Lexus product design.

The GS line-up will feature three colors that are new to the Lexus color palette: Riviera Red, Meteor Blue Mica and Liquid Platinum. Vehicles in Riviera Red will benefit from glass flakes incorporated into the coating that adds a high level of brilliance to the paint. Lexus engineers developed a new advanced coating process for Liquid Platinum exteriors. The GS will be the first Lexus to adopt this new coating technology. Vehicles with the Liquid Platinum exterior will appear more radiant as an additional metallic texture gives both strong shading and defined, sharp highlights. This metallic effect makes subtle and defined bodylines more noticeable and the surface appear finely polished.

Interior Design

2013 Lexus GS 450h Interior

The GS 450h will share the same luxurious and technological amenities as its gas counterpart, including next generation Remote Touch; analog clock with LED indicators, carved from an ingot; and a new energy-saving auto climate control system called S-Flow that focuses airflow only to the front area where passengers are actually seated. A few notable differences include a bamboo-finished steering wheel which reinforces the sustainability of the GS 450h, and the hybrid monitor.

“There is no other mid-luxury hybrid like the new GS 450h,” said Lexus’Templin. “The handling, acceleration, and design of this Lexus hybrid are impeccable. We can’t wait for customers to drive one.”

PRELIMINARY SPECIFICATIONS FOR GS 450h

GAS ENGINE

  • Number of cylinders and arrangement: V6
  • Displacement: 3.5L

MOTOR GENERATORS

  • Motor type: Permanent magnet synchronous motor

HYBRID BATTERY

  • Battery type: Nickel-Metal Hydride

TOTAL SYSTEM OUTPUT

  • Net Horsepower: 338 hp

TRANSMISSION

  • Type: Rear Wheel Drive
  • Gearbox type: Electronically Controlled Continuously Variable Transmission (E-CVT)

SUSPENSION

  • Front: Double wishbone
  • Rear: Multi-link

STEERING

  • Type: Rack and pinion
  • Power steering type: Electric

EXTERIOR DIMENSIONS (in.)

  • Overall Length: 190.7
  • Overall width: 72.4
  • Overall height: 57.3
  • Wheelbase: 112.2
  • Driven Wheels: Rear
  • Curb weight (lbs.): 4,190
  • Brake type: Ventilated front and rear disc with Anti-lock Braking System (ABS), Electronic Brake force Distribution (EBD), Brake Assist (BA) and Vehicle Dynamics Integrated Management system (VDIM)
  • Wheel size: 17 x 7.5 in. (standard) 18 x 8 in. (optional)
  • Tire size: 225/50/17 (standard) 235/45/18 (optional)
  • 0 – 60 mph: 5.6 seconds
  • Top Track Speed: 131 mph (electronically limited)

Comments


  • http://www.facebook.com/people/Lasse-J-Nordvik/100001045418399 Lasse J. Nordvik

    I love the headlights! Same performance with heavily reduced fuel consumption and emissions? Great! The problem with the batteries reducing trunk space solved? Wonderful! I think we’ve got a winner here!

  • BlackDynamiteMB

    Expect 30MPG EPA city
    BD

  • Steven

    Those headlamps are awesome!  Not really a fan of those wheel designs though.

  • BlackDynamiteMB

    Unfortunately adds 475 lbs to the GS350
    I’m sure rear-wheel steering adds to that (I can do without it)BD

  • BlackDynamiteMB

    Brand new headlight design!  Would like to see it in action!
    BD

  • Jasonj

    I am a little disappointed that the performance is reduced.  It went from 5.2 0-60 to 5.6 which is a big difference in feel.  Also those wheels are not very attractive to me.  I love my GS450h and was really hoping to see something even faster like it.  I guess I’ll see what the F looks like and what the cost is.

  • BlackDynamiteMB

    You won’t notice .4 of a second
    Sorry.

    And the current one consistently tests at 5.5
    BD

  • Jasonj

    The last GS450h was rated at 5.2 from Lexus and this one is rated 5.6 so I think there must be a difference in power.  Also .4 is almost a 10% loss which is a lot to me. I drive my GS450 everyday and love it and have been looking forward to an improved version with lithium batteries and more power.  I do see the draw of 30mpg but lets face it if your spending 60+K on a car a few mpgs are not a deal breaker.  I would just gladly trade the mpgs for a 1/2 second in 0-60, trust me you can feel the difference.  

  • http://www.facebook.com/people/Lasse-J-Nordvik/100001045418399 Lasse J. Nordvik

    I look forward to configurators going online so one can see how it looks in different interior and exterior colours.  

  • BlackDynamiteMB

    8MPG city you’ll notice a hell of a lot more
    BD

  • http://www.tomsforeign.com/m-15-lexus.aspx Dan Tole

    Originally people seemed to think that a car could be hybrid or stylish.  Not both.  This Lexus obviously disproves that theory. 

  • Mike DeLorca

     I agree the headlights are great—–not a fan of the wheels—I love the 5-spoke design. They are so much sportier and beefy looking…..I was hoping for at least 8.0 to 9.5 width on the tires too. Come on LEXUS at least offer them. 7.5 is just not quite there yet.    We are all anxious for a GS-F it looks like.

  • http://www.facebook.com/people/Lasse-J-Nordvik/100001045418399 Lasse J. Nordvik

    I try not to focus too much on 0-60 times (or rather 0-100km/h in my case),as they’re far from flawless indicators of how fast the car will actually feel. It’s the midrange acceleration surge that makes hybrid power so special,anyway.

  • http://www.facebook.com/people/Lasse-J-Nordvik/100001045418399 Lasse J. Nordvik

    Yes,I think you’re spot on. The new GS will do an awful lot to change people’s view of hybrids as politically correct goody two-shoes cars. 

  • http://www.facebook.com/people/Lasse-J-Nordvik/100001045418399 Lasse J. Nordvik

    From the European Lexus at Frankfurt brochure: “The introduction of the new GS 450h and GS 350AWD marks the start of a period of further expansion for the GS model range in the near future with additional variants.”   I like the sound of that.

  • http://www.facebook.com/people/Lasse-J-Nordvik/100001045418399 Lasse J. Nordvik

    Too bad the GS 450h won’t get the gorgeous cabarnet leather.

  • http://www.facebook.com/people/Lasse-J-Nordvik/100001045418399 Lasse J. Nordvik

    Too bad the GS 450h won’t get the gorgeous cabarnet leather.

  • car7nut

    I love those headlights. The back-end looks sleeker too with the exhaust tips covered. Overall look of the ther car will appeal to more people in my view. Lexus is smart not to upset ths regular 350 owners with a totally radical looking 450h.

  • Wooski
  • bobby watsa

    hiding the taillamps!? no i liked them visible! 

  • Steven

    I wonder why Lexus is only offering a leather shift knob and not a wood-grain knob. 

  • Anonymous

    Cooler diffuser! YAY
    Lack of visible, integrated, chrome exhaust tips. BOO
    Extra interior LED ambient lighting! YAY

  • Travis

    HORRIBLE RIMS. Get the 19 inch thats can be seen on the 350. These small wheels make the car look huge

  • Wooski

    Where does it say that the Cabernet will not be an option on the hybrid model?  Would be bizzare to do that IMHO.

  • Wooski

    Are the intruments LED?  Because in some the left dial is showing a hybrid indicator between regen / eco and power and in Sport mode is appears to turn into a normal tachometer.

  • Tim

    The D-4S system sounds interesting.. Volkswagen has a direct Injection system but it’s very noisy and buzzy and also very prone to failure..

  • http://www.facebook.com/people/Lasse-J-Nordvik/100001045418399 Lasse J. Nordvik

    The European launch brochure lists the interior colours as: ” black, ivory, grey, saddle tan and topaz brown”.

  • BlackDynamiteMB

    According to Lexus, the GS450h trunk space has increased 50%
    BD

  • Wooski

    I’m sure we’ll get this colour.  Red interior is very popular here in UK on BMWs and the like, especially with Grey, Black, White or Silver exterior.

  • http://www.facebook.com/people/Lasse-J-Nordvik/100001045418399 Lasse J. Nordvik

    There’s a discrepancy in the number of interior colours that’s reported to be available on the 450h. The press release says five,whilst Lexus Norway via facebook says six. I’m hoping it’s six and that the sixth colour not listed in the pdf press release is Cabarnet.

  • http://www.facebook.com/people/Lasse-J-Nordvik/100001045418399 Lasse J. Nordvik

    There’s a discrepancy in the number of interior colours that’s reported to be available on the 450h. The press release says five,whilst Lexus Norway via facebook says six. I’m hoping it’s six and that the sixth colour not listed in the pdf press release is Cabarnet.