It was the first mass - production rear - wheel drive luxury hybrid car , featuring the naturally aspirated 3.5 - liter 2GR - FSE V6 engine mated to an electric motor and a continuously variable transmission ( CVT ) .
GS Hybrid production started in February 2006 .
GS was the first mass - production rear - wheel drive luxury hybrid car , featuring the naturally aspirated 3.5 - liter 2GR - FSE V6 engine mated to an electric motor and a continuously variable transmission ( CVT ) .
GS Hybrid production started in February 2006 .