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2018 Mazda CX-9 Maintenance guide

2018 Mazda CX-9 Maintenance guide
v1.0Updated Jun 12, 2026·Ethan Miller4 Sources Analyzed2 Critical Recalls
MAINTENANCE SUMMARY

The 2018 Mazda CX-9 presents an average reliability profile, with a notable concern regarding the fuel pump. Two recalls address potential fuel pump impeller failure, which can lead to engine stall.

View Critical Issue: Fuel Pump Failure
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Reliability Score

8.0/ 10

Est. Annual Maintenance Cost

$400 - $600

TSBs & Recalls

200 TSBs | 3 Recalls

SummaryMaintenance & CostsCommon FailuresSymptoms & PreventionKeep ReadingFAQSources

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Key Takeaways

  • Focus on fuel pump health due to recall history.
  • Verify completion of electrical system wiring recalls.

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MethodologyHow we score →

Scores are derived from NHTSA recalls and owner complaints, normalized by vehicle segment averages.

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Full ownership breakdown for the 2018 Mazda CX-9.

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Shop Parts

Quick links for routine service and common repair parts.

  • 5W-30 Synthetic Oil
  • Oil Filter (Mazda OEM or equivalent)
  • Synthetic Motor Oil
  • Oil Filter
  • Cabin Air Filter

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