Lexus has confirmed that it's working on a new, small petrol-electric hybrid version of the GS saloon. The new car is likely to be badged GS300h and will rival cars like the BMW 520d EfficientDynamics and Audi A6 2.0 TDI.
Speaking to Auto Express, deputy chief engineer Koji Sato, said: "We are working on a number of solutions to offer low CO2 emissions, and these include a small hybrid."
Very few details have been released, but the new model is expected to use a smaller-capacity engine than the 3.5-litre V6 used in the new GS450h.
The 154bhp 2.5-litre four-cylinder petrol engine - which is currently offered in the ES300h and Toyota Camry Hybrid saloons in North America, where it's teamed with a pair of electric motors and a CVT gearbox - is a logical choice for the new model.
The GS300h is expected to go on sale late next year, with prices starting from around £30,000. More details are expected to be announced at the Paris Motor Show this September.