Subaru · Known Issues

2005 Subaru Outback Problems: 4 Known Issues

2005 model year · 4,521+ owner reports · Updated September 2026

According to Au7o's analysis of 4,521+ owner reports, the 2005 Subaru Outback has 4 documented known issues, with 1 rated critical. The most serious is Head Gasket Failure ($1,500-$2,500 repair). The most commonly reported issue is Head Gasket Failure with 4,521 owner reports. Across all issues with published estimates, repair costs range from $20 to $2,500. DIY maintenance guides at au7o.io.

Frequently Asked Questions

What are the most common Subaru Outback problems?

According to Au7o's analysis of 4,521+ owner reports, the 2005 Subaru Outback has 4 documented issues. The most frequently reported are: Head Gasket Failure, P0741 — Torque Converter Clutch Stuck Off from Failed Lockup Solenoid, Bad Trans Ground, or Contaminated Fluid, Melting / Sticky Dashboard (Instrument Panel Degradation) Causing Glare. Of these, 1 is rated critical and should be addressed promptly.

Is the Subaru Outback reliable?

The 2005 Subaru Outback has 4 known issues documented across 4,521+ owner reports. 1 issue is rated critical: Head Gasket 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 Subaru Outback problems?

Repair costs for known Subaru Outback issues range from $0 to $2,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Head Gasket Failure, typically costs $1,500-$2,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 1999-2010 Subaru Outback Head Gasket Failure?

The 2.5L non-turbo engine is known for external head gasket leaks. Oil seeps past the gasket and can contaminate the coolant. Subaru extended warranties and improved gasket design in later years. Repairs typically run $1,500-$2,500. Severity: high.

What is the 2005-2014 Subaru Outback P0741 — Torque Converter Clutch Stuck Off from Failed Lockup Solenoid, Bad Trans Ground, or Contaminated Fluid?

P0741 sets when the ECM/TCM commands the torque converter clutch to lock up but the expected reduction in converter slip doesn't happen. On the older automatic-transmission Outbacks (4EAT/5EAT, roughly 2005-2014) the dominant real-world causes are a failed torque-converter-clutch… Repairs typically run $150-$1,500. Severity: medium.

What is the 2005-2009 Subaru Outback Melting / Sticky Dashboard (Instrument Panel Degradation) Causing Glare?

On 2005-2009 Legacy and Outback models, the top surface of the dashboard/instrument panel degrades in heat and humidity, becoming sticky, shiny/glossy, and giving off a chemical odor. The high-gloss surface reflects into the windshield and can create glare for the driver. A propo… Repairs typically run $0-$1,000. Severity: low.

What is the 2005-2022 Subaru Outback P0442 — Small EVAP Leak from Gas Cap O-Ring or Leaking Purge/Vent Valve?

P0442 means the ECM detected a small leak in the sealed evaporative-emissions system during its self-test. On the Outback the three usual culprits, in order, are: (1) the fuel filler cap — its rubber O-ring hardens and cracks with age, or the cap isn't clicked tight, or a non-OEM… Repairs typically run $20-$400. Severity: low.

2005 Subaru Outback Problems: 4 Known Issues

All 4 Known Issues

1999-2010 Subaru Outback: Head Gasket Failure#

Common Symptoms

How to Fix

What you need to fix it

Owner tips & cautions

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2005-2014 Subaru Outback: P0741 — Torque Converter Clutch Stuck Off from Failed Lockup Solenoid, Bad Trans Ground, or Contaminated Fluid#

Common Symptoms

How to Fix

Research This Issue

2005-2009 Subaru Outback: Melting / Sticky Dashboard (Instrument Panel Degradation) Causing Glare#

Common Symptoms

How to Fix

Research This Issue

2005-2022 Subaru Outback: P0442 — Small EVAP Leak from Gas Cap O-Ring or Leaking Purge/Vent Valve#

Common Symptoms

How to Fix

What you need to fix it

Research This Issue

Other Subaru Models

Frequently Asked Questions

What are the most common Subaru Outback problems?

Is the Subaru Outback reliable?

How much does it cost to fix common Subaru Outback problems?

What is the 1999-2010 Subaru Outback Head Gasket Failure?

What is the 2005-2014 Subaru Outback P0741 — Torque Converter Clutch Stuck Off from Failed Lockup Solenoid, Bad Trans Ground, or Contaminated Fluid?

What is the 2005-2009 Subaru Outback Melting / Sticky Dashboard (Instrument Panel Degradation) Causing Glare?

What is the 2005-2022 Subaru Outback P0442 — Small EVAP Leak from Gas Cap O-Ring or Leaking Purge/Vent Valve?