How many miles will a 2017 Subaru Legacy last?

In practical terms, a well-maintained 2017 Subaru Legacy can be expected to reach about 200,000 miles, with many owners reporting 250,000 miles or more. This article examines what influences that lifespan and how to maximize longevity.

The longevity of a 2017 Legacy depends on factors such as maintenance history, driving conditions, climate, and adherence to Subaru’s service recommendations. Below, we break down the key elements that determine how far these cars can go and offer practical steps to extend their life.

What affects how long a 2017 Legacy will last

Engine reliability

The common 2.5-liter flat-four engine used in most 2017 Legacies is known for solid durability when it’s serviced on schedule. Regular oil changes with the grade recommended in the owner’s manual, along with timely checks of coolant and leaks, help maximize life. The engine uses a timing chain rather than a belt, which reduces one maintenance milestone, but neglect or severe conditions can still cause wear over time. Some owners have reported oil consumption or related issues as mileage climbs, so staying proactive with diagnostics is important.

Drivetrain and transmission

Many 2017 Legacies use a continuously variable transmission (CVT) paired with all-wheel drive. With proper care—especially timely CVT fluid changes and using the manufacturer-approved fluid—the transmission can perform well for many miles. Transmission wear tends to become a concern if fluids are neglected or subjected to harsh driving, so following the maintenance schedule is key to extending life.

Maintenance habits and upkeep

Routine maintenance is the most reliable predictor of long-term longevity. This includes timely oil and filter changes, coolant service, transmission/CVT service when recommended, brake inspections, tire rotations, and air-filter replacements. Keeping records, addressing recalls promptly, and fixing minor issues before they become major problems all contribute to a longer-lasting vehicle.

Environmental and usage factors

Climate and road conditions matter. Harsh winters with road salt, frequent stop-and-go city driving, and heavy towing (if applicable) can accelerate wear on components like brakes, suspension, and the cooling system. Conversely, highway-driven cars that accumulate miles gradually often fare better over time. Regular inspections can catch corrosion, leaks, and wear that shorten life if left unattended.

What mileage you can realistically expect

Here's a snapshot based on owner experiences and reliability analyses. These figures reflect typical outcomes rather than guarantees, and actual results will vary with maintenance and use.

• 200,000 miles is a common milestone for a well-maintained 2017 Legacy.


• 250,000–300,000 miles is achievable with diligent maintenance and attentive driving.


• Beyond 300,000 miles is possible but less common; some owners report success with extensive care and proactive repairs.

These ranges illustrate what’s possible rather than what is guaranteed. The exact outcome depends on how the vehicle was cared for, the climate it operates in, and how it’s driven over time.

Maintenance practices to maximize lifespan

To push toward the high end of the mileage spectrum, follow these maintenance practices and stay ahead of wear and tear. The steps below are designed to align with typical manufacturer recommendations and common owner experiences.

1. Follow Subaru’s maintenance schedule as published in the owner’s manual, and use the recommended fluids and parts.


2. Change the engine oil and filter at the interval specified for normal or severe driving, using the recommended synthetic grade.


3. Regularly inspect and replace coolant, hoses, and the cooling system components to prevent overheating and corrosion.


4. Keep up with brake inspections, rotor and pad replacements, and tire maintenance (rotation, alignment, and balancing as needed).


5. Adhere to recommended transmission/CVT service intervals and use the correct CVT fluid and filter if applicable.


6. Inspect and replace air filters, cabin filters, and spark plugs at the intervals stated in the manual.


7. Address any warning lights or unusual noises promptly and review recalls or service bulletins with a dealer.

Sticking to these maintenance practices helps mitigate common wear patterns and can significantly contribute to reaching higher mileages with fewer major repairs.

Summary

With conscientious maintenance, a 2017 Subaru Legacy can reasonably reach around 200,000 miles, and many owners report 250,000 miles or more. Longevity hinges on regular service, mindful driving, and timely attention to wear and potential issues. By following the manufacturer’s maintenance schedule, using the right fluids, and staying proactive about inspections, you maximize the chance of your Legacy lasting for many years and miles.

Is the 2017 Subaru Legacy a reliable car?

The 2017 Subaru Legacy is generally considered a reliable car with good fuel economy, a comfortable and quiet ride, and excellent safety scores. Common issues include occasional radio malfunctions and premature factory battery failure, while some owners have reported problems with wheel bearings. 
Reliability overview

• Overall rating: Most owner reviews are positive, with high marks for reliability, comfort, and performance. 
• Long-term durability: Many Subaru owners report their vehicles lasting well over 200,000 miles with minimal major repairs. 

Potential problems

• Radio issues: Some owners have experienced intermittent audio and other radio-related malfunctions. 
• Battery problems: There are reports of early factory battery failure, sometimes at low mileage. 
• Wheel bearings: Some owners have reported that wheel bearings have worn out prematurely, sometimes more than once. 

Things to consider

• Maintenance history: A vehicle with a consistent maintenance history, especially at a Subaru dealer, is a good sign. 
• Safety features: The 2017 Legacy received top safety ratings. The optional EyeSight driver assistance suite includes features like forward collision warning and automatic emergency braking, which can add to safety. 
• Tire wear: Tires are a regular maintenance item, and you may want to check their condition, along with brakes and spark plugs, during an inspection. 

Are subarus reliable after 100k miles?

Yes, Subarus can be reliable after 100,000 miles, but it is heavily dependent on consistent maintenance and addressing potential issues like head gaskets. With proper care, many Subarus can last for 200,000 to 300,000 miles or more. 
Factors for reliability after 100k miles

• Maintenance is crucial: This is the single most important factor. Regularly following the manufacturer's service schedule for things like oil changes, fluid flushes, and timing belt/chain replacements is essential for longevity. 
• Common issues to check for:
  • Head Gaskets: This is a well-known potential issue in older EJ engines, often occurring between 100,000 and 130,000 miles. 
  • Engine reseals: Newer FB engines might require a more involved reseal around 150,000 miles. 
  • CVT transmission: Early models of the Continuously Variable Transmission (CVT) had some documented problems, so it's worth researching the specific model year. 
• Model and engine differences: Older EJ engines are known for head gasket issues, while newer FB engines have a timing chain instead of a belt but may need a different type of service later on. 
• Inspection and service history: If buying a used Subaru, a clean vehicle history report and documented service records are vital. 

How to ensure long life

• Follow the 100k-mile service: At the 100,000-mile mark, be prepared for a service that combines previous intervals and includes replacing spark plugs, transmission fluid, and differential fluid. 
• Preventive maintenance: Continue with all standard maintenance items like oil changes, tire pressure checks, and air filter replacements to prevent other components from failing prematurely. 
• Be prepared for other repairs: Once a car hits 100,000 miles, various other parts like suspension components, wheel bearings, and the alternator may start to need replacement, even if the major mechanical parts are still sound. 

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.

How many miles can a 2017 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.