Engine-family scope
Keep every recommendation specific to the installed MZR, MZR-CD or Skyactiv-G engine.
Drivability and response improvements within the limits of the naturally aspirated hardware.
Mazda5 and Premacy engine availability varied substantially by market. Naturally aspirated MZR, MZR DISI, MZR-CD and later Japanese-market Skyactiv-G applications are listed for identification, with direct original-file verification required for every strategy.
Keep every recommendation specific to the installed MZR, MZR-CD or Skyactiv-G engine.
Treat compatibility as selected support, not a universal claim for every Mazda5 or Premacy.
Reviewed by Justin Freeman · Last reviewed August 2026 · Final support depends on the exact ECU and vehicle specification.