2010 Mazda 6

The 2010 Mazda 6 is a mid-size sedan known for its sporty handling and attractive styling. Engine options included a 2.5-liter inline-4 producing around 170 horsepower and 166 lb-ft of torque, and a 3.5-liter V6 generating approximately 272 horsepower and 258 lb-ft of torque. Both engines were available with either a manual or automatic transmission, depending on the trim and engine. Owners often praise the Mazda 6 for its engaging driving experience and fuel efficiency, while common complaints include road noise and some reliability concerns.

Engine

2.5L Inline-4

• Excessive Oil Consumption
  • Description/Symptoms: Some owners report excessive oil consumption, requiring frequent topping off between oil changes. Blue smoke from the exhaust may also be present.
  • Solution: In some cases, replacing the piston rings can resolve the issue. Other causes can be damaged valve stem seals and stuck PCV valves.
  • Estimated Cost to Fix: $1500 - $3000+ depending on the issue
  • Recalls: None Found

3.5L V6

• Timing Chain Issues
  • Description/Symptoms: Some owners have reported issues with the timing chain tensioners causing premature wear and potential timing chain failure. Symptoms can include a rattling noise upon startup, especially when cold.
  • Solution: Replacing the timing chain, tensioners, and guides is usually necessary.
  • Estimated Cost to Fix: $1200 - $2500+
  • Recalls: None Found

Transmission

5-Speed Automatic (with 2.5L Inline-4)

• Harsh Shifting
  • Description/Symptoms: Some owners have reported harsh or jerky shifting, particularly between 1st and 2nd gear.
  • Solution: In some cases, a transmission fluid flush and filter replacement can improve shifting. If this doesn’t resolve the issue, valve body replacement or transmission rebuild might be necessary.
  • Estimated Cost to Fix: $100 - $300 (fluid flush/filter), $800 - $2000+ (valve body/rebuild)
  • Recalls: None Found

6-Speed Automatic (with 3.5L V6)

• Slipping
  • Description/Symptoms: Slipping between gears or failure to properly shift into gear.
  • Solution: Replacement or rebuild of transmission
  • Estimated Cost to Fix: $2500 - $5000+
  • Recalls: None Found

Suspension

• Premature Bushing Wear
  • Description/Symptoms: Owners have reported premature wear of suspension bushings, particularly in the front control arms. This can lead to clunking noises and loose handling.
  • Solution: Replacing the worn bushings or the entire control arm assembly is the common fix.
  • Estimated Cost to Fix: $200 - $600+ per side, depending on the shop and parts used.
  • Recalls: None Found

Electrical

• TPMS Sensor Failure
  • Description/Symptoms: Tire Pressure Monitoring System (TPMS) sensors failing prematurely, causing the TPMS light to illuminate even when tire pressures are correct.
  • Solution: Replacing the faulty TPMS sensor(s).
  • Estimated Cost to Fix: $50 - $200+ per sensor installed
  • Recalls: None Found
• Radio Display Issues
  • Description/Symptoms: The radio display may stop working or display garbled information.
  • Solution: The only solution is to replace the unit.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found

Exterior

• Rust on Rear Wheel Arches
  • Description/Symptoms: Surface rust can develop on the rear wheel arches, particularly in areas with harsh winters and road salt exposure.
  • Solution: Sanding down the rust, treating the area, and repainting. Prevention with rustproofing treatments is also advisable.
  • Estimated Cost to Fix: $300 - $1000+ per side, depending on the severity of the rust.
  • Recalls: None Found

Interior

• Sunroof Issues
  • Description/Symptoms: Sunroof becoming stuck, failing to open or close properly, or leaking when closed.
  • Solution: Repairing or replacing the sunroof motor, tracks, or seals.
  • Estimated Cost to Fix: $200 - $800+ depending on the specific issue.
  • Recalls: None Found

Summary

The 2010 Mazda 6, while known for its driving dynamics, does have some common issues that potential buyers should be aware of. Engine problems, such as excessive oil consumption and timing chain issues, can be costly to repair. Transmission issues, especially with the automatic transmissions, can also lead to significant expenses. Suspension bushing wear is a relatively common and less expensive issue. Electrical and sunroof issues can also be found. Potential buyers should inspect the vehicle thoroughly and obtain a pre-purchase inspection from a trusted mechanic to identify any existing or potential problems.