Mazda to reveal synthetic-fuel combustion prototype at 2025 Tokyo Motor Show

The 2025 Tokyo Motor Show is about to get under way. Nissan and Lexus are among the manufacturers already confirmed for what is effectively their home event. Mazda will also be there, using the Japanese show to unveil a prototype powered by a new combustion engine running on synthetic fuel (the featured image is for illustrative purposes only).

The Japanese manufacturer has positioned itself as one of the strongest advocates of fuels not derived from petroleum as an alternative to fully electric vehicles. Mazda is keen to ensure that sports cars such as the MX-5 retain one of their defining qualities: low weight.

Mazda and alternative combustion technology

The company has nothing against electric cars. However, Mazda believes that different uses call for different technologies.

This is why it continues to invest in other mechanical solutions capable of extending the useful life of combustion engines. According to the brand, this prototype offers a glimpse of its future direction: creating cars that are engaging to drive while remaining sustainable in the years ahead.

Last year, Mazda joined forces with Toyota and Subaru to develop new combustion engines compatible with battery-hybrid systems and carbon-neutral fuels, with the aim of improving combustion efficiency even further.

What we know about the Mazda prototype

So far, Mazda has released just one image. Although it reveals few details, it does show that the prototype has the shape of a four-door coupé, with a notably steeply sloping roofline.

Carbon capture and algae-based fuel

There will be further innovations alongside the prototype. Mazda will also showcase a new CO₂ capture system, which promises to cut emissions the more the car is driven, as well as a carbon-neutral fuel made from algae.