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Mitsubishi · Known Issues

2010 Mitsubishi Galant Problems: 2 Known Issues

2010 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2010 Mitsubishi Galant has 2 documented known issues, with 1 rated critical. The most serious is 4-Speed F4A4 / 5-Speed Sportronic Automatic Transmission Failure ($1,500-$4,000 repair). Across all issues with published estimates, repair costs range from $500 to $4,000. DIY maintenance guides at au7o.io.

In This Article

  • Galant Transmission1
  • Galant HVAC1
  • Recalls1
  • FAQ
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In This Article

  • Transmission1
  • HVAC1
  • Recalls1
  • FAQ

All 2 Known Issues

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On the 2004-2012 Mitsubishi Galant 3.8L 6G75 V6, 9th-gen Galant transmissions develop two distinct failure patterns: the 2.4L I4 cars use the F4A4 4-speed (torque converter clutch shudder, harsh shifts after ~100k miles) and the V6 Sport/Ralliart use the W5A51 5-speed Sportronic (3rd-gear clutch pack failure, solenoid issues). Both are repairable but expensive. Mitsubishi did not issue an extended warranty for either failure mode; the V6 5-speed failures are particularly costly due to less aftermarket support.

This issue also affects: Mitsubishi Eclipse, Mitsubishi Endeavor, Mitsubishi Lancer

Common Symptoms

  • Harsh shifting between gears
  • Transmission slipping under load
  • Delayed engagement from park
  • Burnt transmission fluid

How to Fix

Change ATF every 30,000 miles and install an auxiliary transmission cooler. When failure occurs, a remanufactured transmission is the most cost-effective solution. Avoid aggressive driving to extend transmission life.

Typical repair cost:$1,500 - $4,000

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Community Reported
High Confidence

On the 2004-2012 Mitsubishi Galant, 2004-2012 Galants suffer recurring A/C condenser failures — the OEM condenser had thin tube walls that develop pinhole leaks, especially in salt-belt climates where road salt accelerates corrosion. Mitsubishi released multiple part revisions through mid-2010 but failures continued. Symptoms: gradual loss of A/C cooling, oil residue around the condenser, low-side pressure too low on gauges. Replacement runs $400-$800 parts + 2-3 hours labor; aftermarket condensers (Denso, Spectra) work well.

This issue also affects: Mitsubishi Endeavor, Mitsubishi Outlander, Mitsubishi Outlander Sport

Common Symptoms

  • AC not cooling
  • Grinding noise from AC compressor
  • Intermittent AC operation
  • Low refrigerant warnings

How to Fix

Replace the compressor, receiver/drier, and expansion valve. Flush the system thoroughly to remove any debris. Use the correct PAG oil specification for the replacement compressor.

What you need to fix it

Only diagnosis- and fitment-reviewed repair parts are linked here.

  • TRQ A/C condenser and receiver-drier assembly ACA84436
    OEMTRQ ACA84436 / 1AACC00053

    Confirmed condenser-leak replacement branch for 2004-2012 Galant Fitment/availability: The inspected direct U.S.

    1A Auto

As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.

Typical repair cost:$500 - $1,200

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Community Reported
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NHTSA Recalls1 recall

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

MITSUBISHI IS RECALLING CERTAIN MODEL YEAR 2010 GALANT VEHICLES. THE AUTOMATIC TRANSMISSION OIL COOLER PIPE ASSEMBLY ON SOME VEHICLES MAY HAVE INSUFFICIENT PLATING TO PREVENT CORROSION, IF THE PIPE SHOULD DEVELOP A HOLE DUE TO CORROSION, AUTOMATIC TRANSMISSION FLUID LEAKAGE MAY OCCUR.

Campaign #10V06600025/02/2010

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Other Mitsubishi Models

Mitsubishi Outlander26Mitsubishi Eclipse17Mitsubishi Outlander Sport13Mitsubishi 3000GT9Mitsubishi Endeavor9Mitsubishi Mirage7

Frequently Asked Questions

What are the most common Mitsubishi Galant problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2010 Mitsubishi Galant has 2 documented issues. The most frequently reported are: 4-Speed F4A4 / 5-Speed Sportronic Automatic Transmission Failure, A/C Condenser Failure with Refrigerant Leak. Of these, 1 is rated critical and should be addressed promptly.

Is the Mitsubishi Galant reliable?

The 2010 Mitsubishi Galant has 2 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: 4-Speed F4A4 / 5-Speed Sportronic Automatic Transmission Failure. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Mitsubishi Galant problems?

Repair costs for known Mitsubishi Galant issues range from $500 to $4,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 4-Speed F4A4 / 5-Speed Sportronic Automatic Transmission Failure, typically costs $1,500-$4,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2004-2012 Mitsubishi Galant 4-Speed F4A4 / 5-Speed Sportronic Automatic Transmission Failure?

9th-gen Galant transmissions develop two distinct failure patterns: the 2.4L I4 cars use the F4A4 4-speed (torque converter clutch shudder, harsh shifts after ~100k miles) and the V6 Sport/Ralliart use the W5A51 5-speed Sportronic (3rd-gear clutch pack failure, solenoid issues). Repairs typically run $1,500-$4,000. Severity: high.

What is the 2004-2012 Mitsubishi Galant A/C Condenser Failure with Refrigerant Leak?

2004-2012 Galants suffer recurring A/C condenser failures — the OEM condenser had thin tube walls that develop pinhole leaks, especially in salt-belt climates where road salt accelerates corrosion. Mitsubishi released multiple part revisions through mid-2010 but failures continue… Repairs typically run $500-$1,200. Severity: medium.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.