A more compact version of Toyota’s Hybrid Synergy Drive system used in larger models, like the Prius and Auris, will make its debut in Toyota Europe’s Yaris hybrid due out later this year.
“Extensive R&D work has produced an efficient, full hybrid system for Yaris using a petrol engine and electric motor, that gives a total power output of 99bhp (74kW),” Toyota said.
Go deeper with GlobalData
The powertrain uses a new 1.5-litre Atkinson cycle petrol engine that weighs 16.5kg less and is 10% more compact than the 1.8-litre unit used in the local Prius and Auris models. Other major components such as the electric motor, power control unit and transaxle were also made lighter and smaller: the size of the motor has been reduced by 20% and the PCU 12%, compared to those in the Auris, while the transaxle has shed 11kg and is 6% shorter.
The packaging challenge for the B-segment supermini also demanded thought be given to about the size and location of the nickel-metal hydride battery pack and the fuel tank, in order to minimise the impact on cabin space for rear seat passengers and the size of the boot. Both are positioned under the rear bench seat, which means the car’s loadspace capacity, and rear passenger space, are unaffected, Toyota claimed.
“Yaris hybrid is set to deliver class-leading CO2, NOx and particulates emissions, together with excellent fuel consumption and low total ownership costs,” the automaker added.
