Toyota, Subaru, Mazda Unite to Develop Cleaner New Engines

Japanese automakers Toyota, Subaru and Mazda are once again joining forces to save the internal combustion engine.

In November 2021, they announced a collaboration to develop and use carbon-neutral fuels for race cars. Now, the trio is back with plans for a new generation of clean and efficient powertrains that supposedly can optimize performance and vehicle design while complying with increasingly strict emissions regulations.

To be clear, Toyota, Subaru and Mazda will not be using identical engines. Rather, they will share technologies as they develop signature engines that not only represent their respective brands but also cater to their customers' unique needs and preferences—inline four-cylinders at Toyota, four-cylinder boxers at Subaru, and rotary engines at Mazda.

Photo: Toyota

Toyota, which owns approximately 20 percent of Subaru and 5 percent of Mazda, has been particularly vocal these past few years about the dangers of going all-in on fully electric vehicles. The new engines will have a more compact design and be compatible with various carbon-neutral fuels like e-fuels, biofuels and liquid hydrogen. They will also be tailored to electrification to help with decarbonization of traditional engines.

On that note, look for a new generation of hybrid systems, such as the one Subaru will soon fit to the Forester and Crosstrek. Mazda is working on a rotary-EV system featuring one or two rotors and acting as a power generator.

Photo: Toyota

Meanwhile, Toyota showed a prototype of the Prius housing a new 1.5-litre four-cylinder engine that’s currently under development, as well as a 2.0-litre variant.

"In order to provide our customers with diverse options to achieve carbon neutrality, it is necessary to take on the challenge of evolving engines that are in tune with the energy environment of the future,” Toyota President and CEO Koji Sato said. “The three companies, which share the same aspirations, will refine engine technologies through friendly competition."

Watch: 2023 Toyota Prius Prime Review

Share on Facebook

More on the subject

NewsSubaru to Axe Legacy in 2025, Focus on Electrification and SUVs
Another sedan bites the dust. This time, it’s the Subaru Legacy . The Japanese automaker has confirmed that its venerable midsize car will not return after the 2025 model year, ending a career that began in 1989. The Legacy was the first vehicle that Subaru built in Indiana specifically for …
NewsFans Want V6 Back in Toyota Camry, Launch Petition
While ramping up its electrification efforts, Toyota rubbed a few people the wrong way by making the 2025 Camry exclusively hybrid. That meant saying goodbye to both the base 2.5-litre four-cylinder engine and the only remaining V6 in the segment. The latter was a strong performer with as much as …
NewsNext-Generation Mazda CX-5 to Offer Hybrid Variant
It’s official: the next generation of the Mazda CX-5 will include a hybrid powertrain as an option. The announcement was made as part of the company’s latest earnings call. Will it be a standard hybrid or a plug-in hybrid? That we don’t know for now. The larger CX-70 and CX-90 …
NewsJapanese Automakers Including Toyota Hit by Testing Scandal
Toyota said Monday it had suspended domestic shipments of three car models after falling foul of government certification rules along with its Japanese rivals Honda , Mazda , Suzuki and Yamaha. The transport ministry told the companies to stop delivering certain models within Japan after they reported failures to follow …