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How long will a 2006 Subaru Legacy last?

With proper maintenance, a 2006 Subaru Legacy can easily reach 200,000 miles or more, and many examples surpass 250,000 miles. Longevity depends on maintenance history, driving conditions, and the specific model and engine.


Understanding the longevity outlook for the 2006 Legacy


The 2006 Legacy offered a couple of engine choices and drivetrain configurations, most notably the 2.5-liter flat-four and, in higher trims, the 3.0-liter flat-six, with either a 4-speed automatic or a 5-speed manual in some versions. Each setup has its own maintenance profile, but both can achieve high mileage if they receive consistent care, early problem detection, and timely repairs. Real-world results vary based on how well the vehicle was maintained, climate exposure, and how aggressively it was driven.


To give a sense of what influences total miles, consider these key variables that owners report most often:



  • Engine and powertrain configuration (2.5L vs 3.0L) and the associated maintenance needs.

  • Adherence to maintenance schedules, especially for belts, coolant, oil, and transmission service.

  • Driving conditions (daily commuting vs. heavy highway use, climate, and exposure to salt or moisture).

  • History of accidents, rust protection, and regular inspections that catch wear before it becomes costly.


In short, while some 2006 Legacies may require more attention as they age, careful upkeep can extend the car’s usefulness well into the 200,000–250,000 mile range, and many owners report even higher mileage with meticulous care.


Maintenance milestones that help maximize life


To maximize the lifespan of a 2006 Legacy, several maintenance tasks should be planned as the odometer climbs. The following milestones reflect common guidance for Subaru models of this era, though always consult the owner's manual for exact intervals.



  1. Change engine oil and filter regularly (approximately every 5,000–7,500 miles with conventional oil, or per synthetic oil recommendations).

  2. Replace the timing belt (and water pump) around 105,000 miles to prevent belt failure, which can cause severe engine damage; include belts, tensioners, and seals where applicable.

  3. Replace spark plugs around 100,000 miles (or as specified by the manual) to maintain proper combustion and fuel efficiency.

  4. Flush and replace coolant every 60,000–100,000 miles, using the manufacturer-recommended coolant type.

  5. Have automatic transmission fluid serviced (and replaced if recommended) by the period specified in the manual to prevent slipping or hard shifts.

  6. Inspect brakes, suspension, and steering components regularly; replace worn parts to maintain safety and handling.

  7. Protect against rust with regular washing, underbody coatings when appropriate, and addressing any corrosion promptly.


Sticking to these milestones and addressing issues promptly can significantly extend a Legacy's useful life.


Common issues to watch for in a high-mileage Legacy


Older Subarus, including the 2006 Legacy, can develop several recurring problems. Being aware helps you plan repairs before they become expensive or dangerous.



  • Head gasket or oil leaks on some 2.5L engines; monitor coolant and oil levels, and look for white smoke or milky oil as warning signs.

  • Timing belt wear and water pump failure on belt-driven engines; timely replacement is essential to avoid catastrophic engine damage.

  • Automatic transmission wear or shifting issues if transmission fluid has degraded; regular servicing helps extend life.

  • CV axle boots, wheel bearings, and suspension components that wear with age, causing noise or vibration.

  • Rust risk in regions with road salt or high humidity; ongoing underbody protection and rust repair can preserve structure.


Proactive maintenance and timely repairs minimize the risk of sudden failures as the car ages.


Buying and owning a used 2006 Legacy


If you’re shopping for a used 2006 Legacy, here’s how to assess its remaining lifespan and condition.



  1. Review comprehensive service history, including oil changes, timing belt replacement, transmission service, coolant flushes, and major repairs.

  2. Inspect for head gasket leaks, coolant in oil, white exhaust smoke, or unusual oil changes that could signal problems to address before purchase.

  3. Test drive for rough shifting, unusual noises, or AWD hesitations; verify the condition of the AWD system and differential fluid.

  4. Check for rust around the undercarriage and wheel wells; verify there’s no prior frame damage or extensive collision repair.

  5. Have a trusted mechanic perform a pre-purchase inspection to identify issues not obvious in a visual check.


A well-maintained example with solid records will typically offer the best chance of long, reliable service.


Summary


Bottom line: a well-kept 2006 Subaru Legacy can last well beyond 200,000 miles, and many reach 250,000 miles or more with disciplined maintenance and careful driving. The key to longevity is staying ahead of wear—timely oil changes, belt replacements, coolant and transmission service, rust prevention, and addressing issues promptly. By understanding the model’s potential weak points and maintaining a proactive maintenance routine, owners can maximize the likelihood of a long, dependable period behind the wheel.

How many miles can a 2006 Subaru Legacy last?


200,000 miles
According to iSeeCars and Kelley Blue Book studies, the Subaru Legacy ranks among the top midsize sedans most likely to reach 200,000 miles. This is further supported by resale value data, which shows that Legacy retains its worth better than many competitors in its class.



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.



What is considered high mileage for a Subaru Legacy?


What Is High Mileage for the Subaru Legacy? A typical Subaru Legacy will last around 200,000 miles. This means that high mileage for the car is anything over 180,000 miles, which places it very close to the predicted end of the Subaru Legacy's lifespan.



Is the 2006 Subaru Legacy reliable?


The 2006 Subaru Legacy is generally considered to be a reliable vehicle, with many owners praising its driving dynamics, handling, and durability. However, some common issues have been reported, particularly with the head gaskets and engine, and potential future repairs can be costly.
 
This video reviews the reliability of the Subaru Liberty/Legacy: 58sReDrivenYouTube · Sep 22, 2023
Positive aspects

  • Reliability: The Subaru Legacy has a strong reputation for reliability and can last for over 200,000 miles with proper maintenance. 
  • Driving performance: The car is praised for its great handling, and the all-wheel-drive system is particularly beneficial in snowy or wet conditions. 
  • Fuel economy: Many owners report good gas mileage, sometimes up to 30 MPG. 

Potential issues
  • Engine problems: Some owners have experienced engine hesitation, misfires, and a potential for blown head gaskets, especially around the 100,000-mile mark. 
  • Fuel pump and heating issues: Other frequently mentioned problems include issues with the fuel pump and heating/cooling systems. 
  • Repair costs: Access to engine repairs can be difficult, and parts can be expensive, especially after the warranty expires. 

What to do if you own one
  • Stay up to date on regular maintenance, especially for the engine and cooling system. 
  • Be prepared for potential repairs related to head gaskets, fuel pumps, or the heating/cooling system, especially on higher-mileage vehicles. 
  • Have a good mechanic familiar with Subarus, as some repairs can be complex. 


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.