Lexus IS chief engineer Junichi Furuyama on why the IS diesel was discontinued in favor of the new IS 300h hybrid:
“In the beginning of [developing] this product, especially for Europe, the CO2 regulations become severe and severe… so we carefully investigated which direction – diesel or hybrid – had potential for the future. Not so right now but in the future,” Junichi Furuyama said.
“Yes, yes [in about 10 to 20 years]. Of course we can engineer a new diesel engine. But we don’t have suitable unit so [we would] have to build new one. We investigated many cases, but conclusion was that hybrid was solution to future severe regulations.
The new Lexus IS hybrid squeezes under the magic 100g/km CO2 barrier in the UK, with its 99g/km figure helping Britons save hundreds of pounds in company car tax.