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NHTSA-Verified · Common Problems

2010 Mazda Cx 9
Common Problems

Ranked from 134 federal NHTSA complaints and 1 recalls. Every problem links to the complaint IDs behind it.

5
Safety
2
High severity
2
Medium
1
Low
5 problems on this vehicle involve a crash, fire, or injury risk. If you are experiencing one, stop driving and have it inspected.

10 Common Problems

Ordered by how often owners reported each one to NHTSA. The bar shows how common a problem is relative to the most-reported on this vehicle. Expand any problem to see the federal complaint IDs.

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  1. 1

    Brake booster failure causing stiff or unresponsive brake pedal

    63complaints
    Safety riskBrakes

    The brake booster fails without warning, causing the brake pedal to become stiff or unresponsive, increasing stopping distance and risking collision.

    $500–$1,300est. brake booster replacement · 2–5 hrs labor
    Get local quotes
  2. 2

    Water pump failure causing coolant leak into engine and catastrophic engine damage

    17complaints
    Safety riskEngine

    The water pump fails, causing coolant to leak into the engine, leading to overheating, engine stalling, and eventual engine damage.

    $400–$1,400est. water pump replacement · 2–6 hrs labor
    Get local quotes
  3. 3

    Power Transfer Unit (PTU) Failure

    16complaints
    High severityTransmission

    The Power Transfer Unit (PTU) fails prematurely, emitting a burning smell and causing power loss. This issue is common and often requires replacement.

  4. 4

    Suspension Control Arm/Ball Joint Failure

    13complaints
    High severitySuspension

    Control arms and ball joints fail prematurely, causing unsafe steering behavior and requiring replacement.

    $300–$900est. control arm / ball joint replacement · 1.5–4 hrs labor
    Get local quotes

    Related recall: 15V451000

  5. 5

    Takata Air Bag Recall Parts Unavailable

    13complaints
    Safety riskOther

    Owners received recall notices for Takata air bags under NHTSA campaign 16V356000, but replacement parts remain unavailable for extended periods.

  6. 6

    Unintended Acceleration or Surging Without Warning

    6complaints
    Safety riskEngine

    The vehicle accelerates uncontrollably without driver input, often requiring emergency braking or evasive maneuvers to avoid collisions.

  7. 7

    Engine Ticking Noise Due to Sludge or Internal Issues

    3complaints
    Medium severityEngine

    A loud ticking noise is heard from the engine, especially when cold, often attributed to sludge buildup or internal mechanical issues.

  8. 8

    Headlamp Corrosion and Failure Due to Condensation

    2complaints
    Low severityElectrical

    Driver-side headlamps fail due to condensation buildup causing corrosion within the headlamp assembly, leading to fuse failure.

  9. 9

    Heated Seat Malfunction Causing Burns or Fire Risk

    2complaints
    Safety riskElectrical

    The heated seat malfunctions, causing burns to occupants and potentially leading to a fire hazard.

  10. 10

    TPMS Valve Corrosion Leading to Flat Tires

    2complaints
    Medium severityOther

    Tire pressure monitoring system valves corrode, leading to flats and potential safety risks due to sudden tire failure.

Other years & sources

2018 Mazda Cx 9All NHTSA complaints for this vehicle →

Data source: U.S. National Highway Traffic Safety Administration (NHTSA) owner complaints and recalls. Problems are clustered and ranked from the complaint record; occurrence counts reflect corroborating complaints, not total incidence. Vehicle image is illustrative. Repair-cost figures are typical U.S. independent-shop ranges (parts + labor) for the class of repair shown — actual quotes vary by region, engine, and diagnosis; always confirm with a local shop.

2010 Mazda Cx 9 Problems & Recalls | WrenchConnect