Loading

Are Subaru Legacy 2005 reliable?

The 2005 Subaru Legacy can be reliable when it has been well maintained, but as an older model it carries age-related wear that requires careful maintenance and informed buying.


Reliability for this generation depends on the engine, transmission, maintenance history, and how the car has been cared for over its roughly two decades on the road. Buyers should vet service records, inspect for common wear items, and consider a pre-purchase inspection before buying.


Reliability snapshot for the 2005 Legacy


What tends to influence reliability most in this era of Subaru Legacy are the engine choice, the state of the cooling system, and how attentively routine maintenance has been kept up. Buyers should weigh these factors when evaluating a used example.



  • Engine options vary by trim: a non-turbo 2.5L flat-4 and a turbocharged 2.5GT are the main choices; turbo models generally demand more intensive maintenance and can have higher ownership costs.

  • Head gasket risk is a known concern for many 2.5L Subaru engines of that era; a well-maintained cooling system and timely service history help mitigate this risk.

  • Timing belt maintenance is critical on the 2.5L engines; missed belt or improper tension can cause severe engine damage, so documentation of belt replacement around 100,000 miles is important.

  • Automatic transmissions in older Subarus can wear with high mileage; manual transmissions tend to be more durable if properly maintained, but both require periodic fluid checks and service.

  • Oil leaks from valve covers, oil pans, and seals are common as these cars age; prompt addressing of leaks helps prevent more serious problems.

  • All-wheel-drive components and wheel bearings can wear over time; inspect the drivetrain for any excessive play, noise, or vibration.

  • Overall reliability is strongly linked to maintenance history; documented, timely service tends to correlate with fewer surprises down the road.


In short, the 2005 Legacy’s reliability is service-history dependent. A well-documented maintenance record and a careful pre-purchase inspection can reveal a solid used car, while neglect can expose the typical age-related issues you would expect in a two-decade-old Subaru.


Engine and powertrain notes


The 2005 Legacy offered several powertrain configurations, with distinct reliability considerations for each. Understanding these helps buyers gauge potential maintenance needs and ownership costs.


2.5L non-turbo (2.5i) reliability


The naturally aspirated 2.5L engine is the more common, lower-maintenance choice. With regular service, this engine can deliver long life, but it remains susceptible to the era’s known issues such as head gasket risk and oil leaks as mileage climbs. Maintenance emphasis should be a clean cooling system, timely belt service, and monitoring for coolant or oil seepage.


Turbocharged 2.5GT reliability


The turbocharged variant delivers more power but at a higher maintenance price. Turbo models tend to require closer attention to cooling, oil quality and changes, and turbo-related components (intercooler, hoses, and related seals). They can be more fun to drive, but the potential for higher repair costs and more frequent service intervals is a trade-off to consider for reliability-focused buyers.


Maintenance you should perform to maximize reliability


Carrying out diligent, model-appropriate maintenance is the most reliable path to a trouble-free ownership experience with a 2005 Legacy. The following tasks represent the core items to prioritize for longevity.



  • Timing belt replacement around 100,000 miles (or per the vehicle’s service interval) and prior belt changes if no records exist; inspect for tensioner and water pump condition during service.

  • Cooling system maintenance: coolant flushes, radiator and hoses inspection, and water pump checks to reduce overheating risk and protect the head gasket.

  • Head gasket inspection and addressing signs of coolant or oil leaks; early intervention can prevent major engine damage.

  • Transmission service: regular fluid checks and changes where appropriate (manual transmissions, when present, also benefit from maintained clutch and linkage; automatics may require more frequent servicing depending on usage).

  • Oil consumption and leaks: monitor for unusual consumption or dripping; fix valve cover gaskets and oil pan seals as needed.

  • Drivetrain wear items: wheel bearings, CV joints, and axle boots should be inspected and replaced as needed to prevent noisy or failing components.

  • Brakes, suspension, and steering components: keep up with pad/rotor replacement, bushing wear, and alignment to preserve safety and performance.

  • Rust and corrosion check, especially on older units; address any significant rust around wheel arches or underbody to protect structural integrity.


Following these maintenance steps and keeping a careful log of service helps maximize reliability and can extend the car’s useful life well beyond the 200,000-mile mark in many cases.


What owners say and expert assessments


Owners and automotive authorities generally describe the 2005 Legacy as a solid, practical car with AWD advantages that remains widely used in used-car markets. Reliability appears to be average for its age class, with most major problems tied to maintenance history rather than inherent design flaws. The most recurring themes center on head gasket risk for aging 2.5L engines and the elevated maintenance needs of turbo variants, along with typical age-related wear on the drivetrain and interior components. A thorough pre-purchase inspection and complete maintenance records can help separate a well-kept example from one that has faced neglect.


Is it worth buying today?


If you’re considering a 2005 Legacy today, prioritize documented service history and a clean inspection report. Look for evidence of timely timing belt service, cooling-system maintenance, and no persistent head-gasket-related leaks. For turbo models, be prepared for potentially higher maintenance costs and more frequent service items. A reputable pre-purchase inspection by a Subaru-trained technician is highly advisable to identify hidden issues before you buy. In nearby markets, well-maintained examples with complete service records can still offer solid value for buyers who want practical all-wheel-drive capability in a budget-friendly package.


Summary



  • Strengths: practical interior, standard AWD, comfortable ride, and reasonable real-world reliability when properly maintained.

  • Weaknesses: age-related wear items are common; head gasket concerns on 2.5L engines; turbo models require more maintenance and can be pricier to repair.

  • Bottom line: a 2005 Legacy can be a reliable daily driver if you buy a well-documented, well-maintained example and stay on top of routine services.


For readers weighing a used 2005 Subaru Legacy, the prudent path is a thorough pre-purchase inspection, a review of maintenance records, and a plan for ongoing preventative maintenance. With those steps, the likelihood of dependable service and AWD practicality improves significantly.

Can a Subaru Legacy last 300,000 miles?


Subaru engines are renowned for their reliability and longevity, often lasting between 200,000 and 300,000 miles with proper maintenance.



Is the 2005 Subaru Legacy a good car?


Yes, the 2005 Subaru Legacy is a good car, particularly praised for its all-wheel-drive system, performance (especially the GT model), and overall reliability and practicality. It is a strong performer in various conditions, offers a fun driving experience, and is often considered a dependable vehicle that can last for many miles with proper maintenance.
 
Strengths

  • All-wheel drive: The standard Symmetrical All-Wheel Drive provides excellent traction and stability, making it a confident choice for wet, snowy, or other challenging road conditions. 
  • Performance: The Legacy GT model, with its 250-horsepower turbocharged engine, is noted for its sportiness and strong performance, while the standard 2.5i model is also responsive. 
  • Practicality: The wagon body style is spacious and practical, with a large trunk, while the sedan is also well-regarded for its overall utility. 
  • Reliability: Many owners find the Legacy to be a durable and reliable vehicle, with a reputation for lasting for well over 200,000 miles if properly maintained. 
  • Driving experience: The car is described as having a good balance of a smooth ride and confident handling, making it enjoyable both around town and on the highway. 

Potential drawbacks
  • Interior space: Some reviewers noted that the interior, particularly the rear seats and front seat legroom, can feel cramped for taller adults. 
  • Maintenance: Like any car, reliability depends on consistent maintenance, and some owners report needing some work on used models, often due to a previous owner's neglect. 
  • Fuel economy: The turbocharged GT model may not be the most fuel-efficient, but the standard 2.5i is generally considered decent. 



What years to stay away from Subaru Legacy?


Years to avoid for the Subaru Legacy include 2010–2014, primarily due to transmission issues and headlight problems, and 2005–2009, which are known for head gasket and other engine-related issues. Other problematic years include 2011 for its headlights and 2018 for infotainment problems. 
Subaru Legacy years to avoid

  • 2010–2014: These years can have issues with the continuously variable transmission (CVT), which can cause hesitation, shuddering, or stalling. The 2011 model year is also notorious for headlights burning out very quickly. 
  • 2005–2009: These models can be prone to head gasket failure, especially on the 2.5L engine, leading to coolant and oil leaks. Other problems can include catalytic converter and rear hub failures. 
  • 2018: This model year has been associated with infotainment system glitches, such as the display freezing or refusing to shut down. 
  • Other years:
    • 2000–2006: Reported issues with faulty oxygen sensors. 
    • 2011–2012: Have been cited for frequent headlight burnout. 
    • 2021–2023: Recall issued for a transmission parking rod issue. 
    • 2023: Recalled for display screen issues and other electronic problems. 



How many miles can a 2005 Subaru Legacy last?


200,000 miles
Legacy: The Subaru Legacy is a midsize sedan known for its reliability and durability. With proper maintenance, Legacy models can easily last well beyond 200,000 miles, providing years of dependable service.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.