PROBLEM GUIDE

2007–2015 Mazda CX-9 Common Problems

Here's what owners are experiencing, based on our research of real owner reports and repair data.

Last updated August 2026

195

complaints filed for the 2010 model year

2007–2015

Model years affected

The dominant problem on this generation is brake booster failure — the brake pedal becomes very hard to push, accompanied by hissing sounds, directly affecting stopping power. Mazda addressed this through a 7-year/90,000-mile extended warranty program rather than a full recall, and multiple owners report not being adequately notified before that coverage window expired, leaving them to pay out of pocket. Given the safety implications, take a hard brake pedal seriously regardless of your warranty status.

Quick Scan: 6 Issues

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PROBLEM DETAILS

Brake booster failure

Brake pedal becomes very hard to push, accompanied by hissing sounds, directly affecting stopping power and vehicle control

Check engine light: Off

This is the single largest complaint theme for this generation: the brake pedal becomes very hard to push, accompanied by hissing sounds, directly affecting stopping power and vehicle control. Mazda addressed this through a 7-year/90,000-mile extended warranty program rather than a full recall, and multiple owners report not receiving adequate notification about the program before their coverage window expired, leading to out-of-pocket repairs. This is a braking-system fault, mechanical rather than engine-based, so it doesn't reliably trigger a check-engine light — but a hard-to-push brake pedal is a serious symptom regardless of your warranty status.

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Water pump failure causing engine damage

Coolant leaking into the engine, causing motor damage

Check engine light: On

Water pump failures that let coolant leak into the engine, causing motor damage and often requiring a complete engine replacement. No official recall has been issued despite multiple complaints. Coolant contamination of the engine typically triggers a check-engine light and/or overheating warning.

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Transfer case / power train issues

Burning smells, grinding noises; a time-limited extended warranty program exists

Check engine light: Off

Transfer case and transmission failures producing burning smells and grinding noises. An extended warranty program exists but is time-limited, so coverage may have already lapsed for some owners. A transfer case/transmission fault like this doesn't typically trigger a check-engine light, though a drivetrain warning light may appear.

This is a second time-limited coverage program, separate from the brake booster program on this vehicle. Check your current eligibility before assuming either still applies.

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Hard Shifts and Transmission Slips

Hard shifts and transmission slipping

Check engine light: Off

Hard shifts and transmission slipping. This is among the more frequently reported issues on this generation, with 178 owner reports on file.

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Water Damage to Body Control Module

Body control module damaged by water intrusion

Check engine light: Off

Body control module damaged by water intrusion. This is among the more frequently reported issues on this generation, with 79 owner reports on file.

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Chirp or Squeak Noted From the Front of the Vehicle

Chirp or squeak noise from the front of the vehicle

Check engine light: Off

Chirp or squeak noise from the front of the vehicle. This is among the more frequently reported issues on this generation, with 23 owner reports on file.

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This generation has a confirmed suspension recall for lower control arm failures (Campaign 15V451000) and a confirmed Takata airbag recall (Campaign 19V782000) — both covered here rather than in the problems below. Enter your VIN to get the confirmed, current recall picture for your specific car.

The information on this page is for general educational purposes only and is not a diagnosis. It is compiled from aggregated owner-reported data and publicly available sources, not from an inspection of your vehicle. Symptoms described here can have multiple causes, and the presence of a commonly reported problem does not mean your vehicle has it. Repair cost ranges are estimates that vary by region, shop, vehicle condition, and parts availability. Recall and service campaign information may be incomplete or out of date — verify current recall status with NHTSA or your manufacturer. MyGearGuru is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer; manufacturer and model names are used for identification only. Always consult a qualified technician before making repair decisions.

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