Lexus HS - Development

Development

Lexus displayed the HS 250h for the first time at the North American International Auto Show in 2008, with plans to launch the vehicle in major world markets including the U.S. and Japan. According to division officials, the HS was produced in response to consumer interest in dedicated hybrid models, with many stating that they would purchase such a vehicle if a luxury make offered one. The success of the Toyota Prius with upper-income buyers was also a consideration. The resulting HS 250h would become the most fuel-efficient in the Lexus lineup at its debut. At its launch, the HS 250h was also claimed to be the most fuel-efficient luxury vehicle in the U.S. The CT 200h, launched in 2011, later surpassed the HS 250h's fuel economy ratings.

To cater to environmentally-conscious buyers, the HS 250h design included carbon footprint-reducing considerations, including the adoption of plant-derived "eco-plastic" (bioplastic) materials for the interior, cargo space, and foam injected areas. Bioplastic plant sources included kenaf fibers and castor seeds. Kenaf-based material was previously used in the Lexus ES rear interior. According to the manufacturer, 85 percent of the vehicle was fully recyclable. For the Japanese domestic market, the HS 250h featured a Harmonious Driving Navigator system which monitored efficient driving characteristics and compared them with others to determine the 'greenest' overall driver, for which charitable donations could be made.

The HS 250h's platform was based on the third generation Toyota Avensis, itself related to the traditional gasoline engine Toyota Allion sold from 2001 to 2007, and was based on 2.4-litre-engined Corolla with electric motors. Other related models included the Toyota Premio, Toyota Vista (5th gen), Toyota Opa, Toyota Wish, and Toyota Caldina (3rd gen). In July 2009, the HS 250h made its sales launch in Japan, with 1,500 pre-orders logged at its introduction. This figure was reportedly three times greater than originally forecasted. The Toyota Sai, a sister model sharing the same platform and hybrid drivetrain, was launched in Japan in October 2009. However, HS 250h was not slated for the European market, where the similarly-sized IS 220d was sold.