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Based on the brand's core principle of "pursuing the essence of luxury", Lexus aimed to develop a luxurious "harmonious sedan", hence the "HS" in the vehicle's name. The result is a car that not only exists harmoniously with Earth and people but also exudes the high quality for which Lexus is renowned. Specifically, the HS250h combines outstanding driving performance with a hybrid-system-achieved 23.0km/l*2 fuel efficiency, which is exceptional for a premium sedan. A concerted effort has also been made to use Ecological Plastic, a plant-based plastic that reduces environmental impact, for interior parts and components. Further, the cockpit environment has been designed to lessen the need for physical movement or switching visual focus, thus allowing the driver to concentrate fully on the task of driving. These are among the advanced features that make the HS250h a new breed of premium sedan. Lexus plans to introduce the HS250h in North America in September.
Monthly Sales Target 500 units Assembly Plant Miyata Plant, Toyota Motor Kyushu, Inc.
Premium sedan with outstanding fuel efficiency, environmental performance and related technologies Fuel efficiency and environmental performance The HS250h features a hybrid system combining a 2.4-liter Atkinson cycle combustion engine with an electric motor and a reduction gear, realizing a fuel efficiency of 23.0km/l, which is exceptional for a premium sedan. Also, by delaying intake valve closure, the engine achieves a high expansion ratio at low pressure, thus raising heat efficiency. Under the Japanese Ministry of Land, Infrastructure, Transport and Tourism (MLIT) JC08 test cycle, the HS250h has a fuel efficiency of 19.8km/l. The vehicle meets new 2015 Japanese fuel efficiency standards set out under the Law Concerning the Rational Use of Energy, and CO2 emissions are 75% lower than the 2005 standards under the MLIT approval system for low-emission vehicles, which is currently the strictest standard in Japan for emissions. The HS250h thus qualifies for incentives under the Japanese government's taxation system for environmentally friendly vehicles. The vehicle features a total of four switch-engaged driving modes, including the standard mode designed to balance requirements for both high fuel efficiency and power.
The Hybrid System Indicator and Eco Driving Indicator give visual support for environmentally considerate driving. Key Hybrid System Specifications
The transaxle is exceptionally small and light, with a compact high-speed motor that achieves increased output and a reduction gear that increases torque. An exhaust heat recovery system uses exhaust gas to heat the engine, thus shortening engine-warming time and contributing to greatly improved fuel efficiency, especially when outside temperatures are low. Special glass blocks roughly 30% of infrared rays, keeping interior temperatures from rising and thus reducing the need for air conditioning. LED headlights, taillights and stoplights conserve electric power and consequently reduce power-generation requirements on the engine. The vehicle is fitted with the recently developed Harmonious Driving Navigator, which awards points for environmentally considerate driving that can then be used, for instance, to make donations to a charity. This system creates a fun way to encourage drivers to drive in an environmentally considerate way.
Environmental impact reduction Plant-based Ecological Plastic has been adopted for the first time for the luggage-space trim surface. The wide range of applications for this material includes the scuff plates, toolbox, other injection-moulded parts and the foam material used in the seat cushions.
Recycled plastics have also been used innovatively, thus further reducing environmental impact. TMC employed its Eco-Vehicle Assessment System (Eco-VAS)—its original system to comprehensively assess environmental impact. Eco-VAS includes setting targets at the start of vehicle development to help reduce environmentally harmful factors by such means as the balanced reduction of CO2 emissions. A life-cycle assessment was carried out to reduce air contaminants and CO2 from the vehicle throughout its lifecycle. Careful consideration of the materials, processing methods and adhesives used for interior parts reduced volatile organic compounds and unpleasant interior odors to levels compliant with voluntary industry standards. Aerodynamic design and ergonomic cockpit Exterior The design, based on the L-finesse*6 concept, pursues the advanced image worthy of a dedicated hybrid model, combining occupant comfort with aerodynamics that contribute to outstanding fuel efficiency.
Aerodynamics The shaping of the side silhouette, front grille, front and rear bumpers, rear fenders, and other exterior parts were aerodynamically designed, allowing the vehicle to achieve a class-leading 0.27*7coefficient drag value.
Interior Along with its elegance, the interior design achieves an ergonomic cockpit that combines high levels of visibility and operability to create an advanced driver-oriented space. A clear distinction is made between the information-filled Display Zone and the function-control Operation Zone, resulting in a cockpit layout that allows the driver to concentrate on the task of driving.
The shaping of the door trim, which matches the floating profile of the center cluster, along with the fine-grade, artificial leather finish on both sides of the center cluster and on the meter hood, is designed to convey a cutting-edge image and a high-quality feel. There are 10 interior color schemes available, including the eye-catching "Black and Camel Yellow" and the newly developed, futuristic "Water White". Hybrid-specific items To highlight the vehicle's advanced nature, the "Lexus hybrid blue" color is apparent in the front and rear logo, as well in the headlights, rear-combination taillights, Remote Touch panel, meter display and other exterior and interior fittings. Highly practical Intelligent Package and range of useful features The vehicle's Intelligent Package provides a spacious cabin and ample luggage room, while also ensuring forward visibility and ease of ingress and egress.
The hard-disk drive navigation system features an 8-inch pop-up display that, together with the Remote Touch feature, achieves a high level of both visibility and operability. A 10-speaker Lexus HS Premium Sound System that produces a dramatic expansion of the sound field comes standard. Also available is a 15-speaker Mark Levinson® premium surround-sound audio system that aims to create a clearer and richer audio environment. Plasmacluster®*9 air-purifying technology with a negative ion generation function, fills the cabin with air that has an equal ratio of positive and negative ions and helps prevent the propagation of airborne germs, mold and bacteria, thus contributing to the creation of a stress-free cabin environment. The vehicle features a ventilation system that reduces seat and seatback surface temperature of the front seats. This allows greater driving comfort, thus reducing need for air-conditioner use, and through this, improving fuel efficiency. There is also a front seat heater that effectively warms the shoulders and legs to save on electric power. High-quality driving Intensive spot-welding in areas such as the doorways and floor, bonding of the front suspension tower and the cowl and other enhancements throughout the vehicle produce a high-rigidity body with outstanding handling and stability. In addition to the high-rigidity body, use of vibration-damping suspension members and effective placing of vibration-reducing and soundproofing materials raises the high level of quietness that typifies a hybrid vehicle. Optimization of the suspension geometry, adoption of highly responsive shock absorbers with rebound springs and other measures make for superior straight-driving stability and cornering, while at the same time providing a smooth, high-quality ride. The vehicle is fitted with a newly developed, compact electric power steering (EPS) system. Electric assist features enable fine control in line with vehicle speed, thus realizing a feeling of direct steering control from low to high speeds. Outstanding safety performance A Pre-crash Safety System and other advanced technologies, combined with the provision of up to 10 airbags contribute to outstanding safety performance.
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