Toyota’s next-generation 1.5-litre engine will power future hybrid and plug-in hybrid models, potentially delivering fuel consumption as low as 3.0L/100km.
Toyota is developing an all-new 1.5-litre petrol engine aimed at significantly improving fuel efficiency across its next-generation hybrid and plug-in hybrid (PHEV) vehicles. The Japanese automaker is targeting fuel economy improvements of more than 15 per cent through a redesigned engine and upgraded electrification components.
The new four-cylinder engine is being developed specifically for hybrid applications rather than being modified from an existing petrol powertrain. Toyota plans to introduce both naturally aspirated and turbocharged versions, allowing the technology to serve different vehicle categories and performance requirements.
New Engine to Replace Existing Powertrains
The naturally aspirated 1.5-litre engine is expected to replace Toyota’s existing 1.8-litre four-cylinder and 1.5-litre three-cylinder engines. These powertrains are currently used in several popular models, including the Yaris, Yaris Cross, C-HR and Corolla.
Alongside the new engine, Toyota is developing smaller and lighter electric motors, power control units and inverters to improve the overall efficiency of its hybrid systems.
Although the company has not confirmed the first production models to receive the technology, the next-generation Corolla could be among the potential beneficiaries.
Fuel Consumption Could Drop Below 3.5L/100km
Toyota currently advertises fuel consumption figures of 3.5L/100km for the Yaris hybrid, 3.8L/100km for the Yaris Cross and 4.0L/100km for the Corolla Hybrid.
A 15 per cent improvement could bring these figures down to approximately 3.0L/100km, 3.2L/100km and 3.4L/100km, respectively.
For the Yaris, which features a 36-litre fuel tank, this efficiency could theoretically deliver a driving range of around 1,200 kilometres on a full tank.
Toyota plans to achieve these improvements by reducing mechanical friction, improving thermal management and minimising electrical energy losses.
New Platform to Support Multiple Powertrains
The redesigned engine and electrical components will feature a more compact structure, allowing integration into platforms designed around electric vehicle technology.
Toyota’s multi-pathway architecture will support hybrid, PHEV and fully electric vehicles while helping reduce manufacturing and development costs.
The company also intends to make its future engines compatible with renewable and carbon-neutral fuels, including hydrogen.
With hybrid demand continuing alongside the expansion of electric vehicles, Toyota’s latest development reflects its strategy of offering multiple electrification solutions for different markets.