2010 Mazda CX-9

The 2010 Mazda CX-9 is a mid-size crossover SUV that offered a blend of practicality, sporty handling, and a stylish design. All 2010 CX-9s came equipped with a 3.7-liter V6 engine producing 273 horsepower and 270 lb-ft of torque. The engine was paired with a 6-speed automatic transmission. Owners often praise the CX-9 for its spacious interior, comfortable ride, and responsive handling for its class. Some common complaints include subpar fuel economy for the size of the vehicle and some reliability concerns as the vehicle ages.

Engine

3.7L V6

• Timing Chain Failure
  • Description/Symptoms: A stretched or worn timing chain can cause a rattling noise upon startup, rough idling, and eventually, engine misfires and a check engine light. Often triggered by poor maintenance, infrequent oil changes.
  • Solution: Replacement of the timing chain, guides, and tensioners.
  • Estimated Cost to Fix: $1,500 - $2,500+
  • Recalls: None Found
• Water Pump Failure
  • Description/Symptoms: Leaking coolant, overheating, and potential engine damage if not addressed promptly.
  • Solution: Replacement of the water pump.
  • Estimated Cost to Fix: $500 - $1000
  • Recalls: None Found
• Valve Cover Gasket Leaks
  • Description/Symptoms: Oil leaks around the valve cover, leading to a burning smell and potential oil loss.
  • Solution: Replacement of the valve cover gaskets.
  • Estimated Cost to Fix: $300 - $600
  • Recalls: None Found

Transmission

6-Speed Automatic

• Torque Converter Failure
  • Description/Symptoms: Shuddering during acceleration, especially at lower speeds, and potentially stalling.
  • Solution: Replacement of the torque converter.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found
• Shift Flare/Slipping
  • Description/Symptoms: Delayed or harsh shifting between gears, or the engine revving excessively without a corresponding increase in speed.
  • Solution: Fluid Flush, valve body replacement or transmission replacement
  • Estimated Cost to Fix: $250 - $4,000+
  • Recalls: None Found

Suspension

• Rear Shock Absorber Failure
  • Description/Symptoms: Bouncy ride, poor handling, and noise from the rear suspension.
  • Solution: Replacement of the rear shock absorbers.
  • Estimated Cost to Fix: $300 - $600
  • Recalls: None Found
• Sway Bar Link Failure
  • Description/Symptoms: Clunking or rattling noise from the front or rear suspension, especially when going over bumps.
  • Solution: Replacement of the sway bar links.
  • Estimated Cost to Fix: $150 - $300
  • Recalls: None Found

Electrical

• Power Door Lock Actuator Failure
  • Description/Symptoms: Door locks failing to lock or unlock properly, or making a buzzing noise.
  • Solution: Replacement of the faulty door lock actuator.
  • Estimated Cost to Fix: $200 - $400 per door
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Battery draining overnight or within a short period, requiring frequent jump starts. This can be caused by a parasitic draw.
  • Solution: Diagnosing and repairing the source of the parasitic draw (e.g., faulty module, aftermarket accessory).
  • Estimated Cost to Fix: $100 - $500+ (depending on the source of the drain)
  • Recalls: None Found

Exterior

• Liftgate Strut Failure
  • Description/Symptoms: The liftgate failing to stay open on its own, posing a safety hazard.
  • Solution: Replacement of the liftgate struts.
  • Estimated Cost to Fix: $100 - $300
  • Recalls: None Found

Interior

• Air Conditioning Issues
  • Description/Symptoms: Inconsistent cooling, warm air blowing, or a complete lack of air conditioning.
  • Solution: Could be a variety of things: Compressor failure, refrigerant leak, blower motor failure, etc. Requires diagnostics to determine the root cause.
  • Estimated Cost to Fix: $200 - $1,200+ (depending on the issue)
  • Recalls: None Found
• Navigation/Infotainment System Issues
  • Description/Symptoms: Freezing, crashing, or unresponsive touchscreen.
  • Solution: Software update (if available), or replacement of the head unit.
  • Estimated Cost to Fix: $100 - $1,000+
  • Recalls: None Found

Summary

The 2010 Mazda CX-9, while generally reliable, can exhibit some common issues as it ages. Engine problems like timing chain and water pump failures are among the most expensive to address. Transmission issues, while less frequent, can also be costly. Suspension and electrical problems are more common and generally less expensive to repair. Overall, potential buyers should be aware of these potential issues and factor in the cost of preventative maintenance or repairs when considering purchasing a used 2010 Mazda CX-9. A pre-purchase inspection by a qualified mechanic is highly recommended.