HIROSHIMA, Japan - Mazda Motor Corporation (Mazda) conducted a demonstration test of its under development onboard CO2 (carbon dioxide) capture system, 'Mazda Mobile Carbon Capture,' during Round 3* of the Super Taikyu Series 2026, held from June 5 to 7, 2026. During the test, Mazda successfully demonstrated CO2 storage during driving, newly added to this round of testing, marking a step forward toward the practical application of the system and the achievement of carbon negativity.
Demonstration Experiment
CO2 capture device installed on the demonstration vehicle
CO2 capture device installed
on the demonstration vehicle
Under the theme 'The Joy of Driving Fuels a Sustainable Tomorrow,' Mazda announced 'Mazda Mobile Carbon Capture' at last year's JAPAN MOBILITY SHOW 2025, and is aiming to realize mobility that reduces CO2 the more you drive by 2035.
In this demonstration test, a CO2 desorption function of the adsorption unit and a CO2 storage tank were added to the race car 'MAZDA SPIRIT RACING 3 Future concept' (No. 55), which was driven using carbon-neutral fuel-hydrotreated vegetable oil (HVO) which is already in practical use in Europe. As in the previous test, zeolite with a porous structure was employed as the adsorbent. Zeolite readily releases CO2 when heated, enabling the captured CO2 to be desorbed using the exhaust heat generated during driving. The desorbed CO2 is then compressed by an electric compressor and stored in a tank. Mazda has successfully demonstrated this integrated process as a complete system for the first time. As a result of repeating this process throughout the 24-hour race, a total of 804 grams of CO2 was captured, achieving a significant advancement-approximately 9.6 times the previous result of 84 grams.
Demonstration test Previous: 1st (November 2025) This time: 2nd (June 2026)
Equipment
(Function) CO2 Adsorption Unit
(adsorption only) Dehumidifier,
CO2 Adsorption Unit (adsorption + desorption)*
CO2 Tank (storage)
CO2 captured 84g 804g
In addition to the storage experiment, the combined effect of CO2 reduction achieved through HVO and the amount of CO2 captured by the system temporarily exceeded the target recovery level assumed for typical use of Mazda production vehicles, confirming the potential for carbon-negative operation in production vehicles, albeit for a limited period. Building on these results, Mazda is embarking on a new phase of challenges aimed at achieving carbon negativity in racing cars, which operate under higher loads and more demanding conditions. Specifically, Mazda aims to achieve short-term carbon negativity in its racing car at Round 7 of the Super Taikyu Series, to be held this November.
Moving forward, Mazda will continue to collaborate with numerous partners to further refine the technology and equipment based on the insights gained to date, contributing to the realization of a sustainable mobility society.
Related News Releases
*Mazda Begins Demonstration Experiment of Onboard CO2 Capture System
https://newsroom.mazda.com/en/publicity/release/2025/202511/251117b.html
Related information: Mazda Corporate Website
*Japan Mobility Show 2025: The Joy of Driving Fuels a Sustainable Tomorrow. Mazda's Vision for the Future of Smart Mobility in 2035
https://www.mazda.com/en/mazda-mirai-base/articles/20251029-jms2025-concept/
*Japan Mobility Show 2025: The More You Drive, the Cleaner the Planet? The MAZDA VISION X-COUPE and the Future of Joy of Driving
https://www.mazda.com/en/mazda-mirai-base/articles/20251029-jms2025-mazda-vision-xcoupe/
*Creating a Positive Future for Combustion Engine Cars: Mazda's Public Proof-of-Concept Testing for Carbon Neutral Combustion Engine Car
https://www.mazda.com/en/mazda-mirai-base/articles/20251210-CO2-capture/
*Super Taikyu Series: One of Japan's premier endurance racing series featuring a wide range of vehicle models: (Japanese only)
https://www.mazda.com/ja/experience/mspr/motorsports/supertaikyu/
ENEOS Super Taikyu Series 2026 Empowered by BRIDGESTONE Round 3: Fuji 24-Hour Race
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