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Mazda Unveils Exhaust-Mounted Carbon Capture Prototype, Plans Race Test

Mazda will validate the zeolite-based unit on track to gauge its potential for real-world emissions cuts.

Overview

  • Mazda’s Vision X-Coupe concept debuts a ‘Mobile Carbon Capture’ device that diverts exhaust flow, dries it, binds CO2 to a zeolite substrate, and stores the gas in an onboard tank.
  • The company says the prototype currently captures about 20% of tailpipe CO2, with the storage canister expected to be swapped or emptied after use.
  • A modified Mazda Spirit Racing entry will run the system in Japan’s Super Taikyu endurance series later in 2025 to collect full‑load performance and durability data.
  • Executives position the project within Mazda’s Multi‑Solution Strategy, exploring rotary range extenders, biofuels, and possible reuse of captured CO2 for materials or industrial processes.
  • Mazda claims pairing modest capture rates with algae‑derived e‑fuels could achieve net‑zero or even carbon‑negative outcomes, while cautioning there is no production timetable and key cost and weight questions remain.