Subaru Engine Rebuild Cost Ubtruebluecom Automotive Cost: A Comprehensive Guide Price Replacement Repair

Subaru Engine Rebuild Cost: A Comprehensive Guide

Colby Brookman | Last updated Saturday, July 1st, 2023

Subaru engine rebuild cost is an important aspect for Subaru owners to comprehend. Engine rebuilds are sometimes necessary to restore optimal performance, but it's essential to be aware of the potential expenses involved.

Having a clear understanding of the costs associated with a Subaru engine rebuild offers several benefits. It enables you to plan your finances effectively, ensuring you have the necessary funds available when the need arises.

The cost of rebuilding a Subaru engine varies, but on average, it falls within the range of $2500 to $4000. Specifically, the engine block itself typically costs around $1500 to $2000, while the labor required for the rebuild amounts to approximately $2000. This labor cost is based on an estimated 20 hours of work at a rate of $100 per hour.

If the idea of rebuilding a Subaru engine rather than investing in a new one has crossed your mind, I encourage you to delve into the details and explore the potential costs associated with this undertaking. By continuing to read, you can gather valuable insights regarding the financial aspects involved in the engine rebuilding process.

How Much Does It Cost To Rebuild A Subaru Engine?

The cost of a rebuilt Subaru engine can vary depending on your specific circumstances. If you opt for a do-it-yourself approach, your expenses will primarily involve purchasing the necessary parts and, perhaps, seeking professional assistance to fix the cylinder heads.

On the other hand, entrusting the engine rebuild to a specialist will incur additional costs for installation, but this route generally takes less time compared to the DIY process.

Partial rebuild$1300 - $2000$2300 - $4000
Full rebuild$2500 - $3000$3500 - $6000

Opting for a partial rebuild, typically focusing on the top-end, tends to be a simpler and more affordable option compared to a complete rebuild. However, if you're encountering issues with the bottom-end of the engine, it is often more efficient to pursue a full rebuild.

Furthermore, the total costs involved in the rebuild process can accumulate based on the number of components you choose to address. If you prioritize peace of mind, you may decide to rebuild more elements than strictly necessary.

When it comes to rebuilding Subaru engines, the most cost-effective options are either a do-it-yourself (DIY) approach or seeking assistance from a skilled mechanic. By taking matters into your own hands or relying on the expertise of a trusted mechanic, you can keep the expenses within a reasonable range.

However, if you find yourself in a situation where you must turn to a dealership for the rebuild, it's important to be prepared for a significantly higher price tag. In such cases, the cost can easily surpass $6000 or more. The bulk of this amount typically stems from labor charges, as dealership services often come with a premium price.

Undertaking the Rebuild Process for a Subaru Engine

Once the decision is made to proceed with an engine rebuild, the real work begins. This intricate process consists of various stages, each tailored to address the specific needs of your Subaru vehicle.

Let's delve into some of the essential aspects involved in the engine rebuild process:

1. Removal

The initial step entails removing the old engine from the vehicle. Each component is then meticulously disassembled and subjected to a thorough cleaning to ensure optimal functionality.

Afterward, a thorough examination will be conducted on each component to determine their degree of wear and assess their suitability for efficient reuse in the reconstruction process.

2. Machining

In the Machining phase, meticulous attention will be devoted to preparing every component intended for the engine, ensuring seamless integration with the overall system. Through processes such as smoothing, micro-polishing, straightening, and resurfacing, each part will be carefully refined to meet the required standards.

It is imperative that each individual element attains a state of impeccable condition prior to its installation onto the engine.

3. Reassembly

During the Reassembly phase, the engine will be meticulously reconstructed, with each component being carefully installed. While some existing parts may be retained, new components will also be introduced into the process.

Typically, new gaskets, seals, gears, bearings, and the timing belt will be incorporated. The complete rebuild of the engine involves the meticulous assembly of individual elements. This stage often consumes a significant amount of time due to the crucial requirement of ensuring seamless synergy among all the parts.

Exemplary caution must be exercised throughout the reassembly process to ensure the optimal functionality of each aspect in fulfilling its designated role.

Upon the completion of reassembly, the engine testing phase commences. This crucial step precedes the reinstallation of the engine into the vehicle, enabling any necessary adjustments to be made before reaching the final stage.

Comprehensive inspections conducted during this phase encompass verifying the proper functioning of compression and assessing the performance of each individual component. Should any anomalies arise, necessary rectifications will be promptly executed.

4. Reinstallation

In this final stage, the overhauled engine will be carefully fitted into the vehicle, and all necessary connections will be reestablished.

Upon the completion of the installation, the vehicle will be ignited, and typically, a test drive will be undertaken to verify optimal functionality and ensure that the rebuilt engine appropriately responds to driver input.

This comprehensive assessment guarantees that everything is operating as intended and confirms the successful integration of the rebuilt engine into the vehicle.

Is it Possible to Rebuild a Subaru Engine on Your Own?

In the majority of cases, it is advisable to have a specialist handle the rebuilding of a Subaru engine. This intricate undertaking demands a wealth of expertise to ensure optimal performance.

Achieving flawless functionality for every component within the engine necessitates the precision that specialists are equipped to deliver, ensuring the highest level of quality.

However, if you possess a sufficient level of confidence in your knowledge and abilities to undertake an engine rebuild independently, it can potentially result in substantial savings on labor costs. In such cases, the majority of the workload will rest squarely on your shoulders.

To commence the process, it will be necessary to remove and disassemble the old engine, carefully examining each part to determine their viability for the rebuild.

Afterwards, you will need to acquire all the required components, usually by placing an order through a Subaru dealer, ensuring that you have everything necessary for a thorough and effective rebuild.

Additional Aspects of the DIY Engine Rebuild Process

As part of the DIY process, certain components requiring machining will need to be taken to a specialized shop that provides such services, which may incur extra expenses.

Typically, at least the engine cylinder heads will require a visit to the machine shop. It's important to note that there may be a waiting period until these parts are completed.

Once you have obtained the machined parts, you can proceed with the engine reassembly. Prior to reinstalling it into the vehicle, it is recommended to perform a thorough test, akin to what a mechanic would do, ensuring optimal functionality and performance.

Your experience with this process will vary based on the extent of the rebuild required.

For minor changes that involve only a few components, a partial rebuild will suffice. Top-end rebuilds are frequently performed, but you may also consider enhancing the overall performance by incorporating engine mounts or clutches.

In cases where bottom-end engine problems are encountered, a comprehensive engine rebuild is typically recommended. This comprehensive approach entails replacing or rebuilding every component, ranging from seals to blocks, ensuring a thorough restoration of the engine.

When Should You Consider To Rebuild Subaru Engine?

Determining the appropriate time to consider rebuilding your Subaru engine can be aided by looking out for the following signs that may indicate the necessity of such a course of action:

  • The presence of a cracked engine block, which may result from excessive heat or problems such as coolant leaks.
  • Unusual knock-like noises emanating from the engine.
  • Frequent occurrences of coolant or oil leaks accumulating beneath the vehicle.
  • An atypical change in the color of smoke emitted from the exhaust.

Although other components in your vehicle can potentially contribute to these problems, it is advisable to promptly seek the expertise of a specialist once you become aware of these issues.

A qualified specialist will be able to thoroughly assess the situation and determine whether your engine necessitates a rebuild or replacement.

How Long Does It Take to Rebuild a Subaru Engine?

The duration required for rebuilding a Subaru engine is contingent upon several factors. Among these factors, the type of installation significantly influences the length of the rebuilding process.

If you opt for a DIY approach, the timeframe typically extends beyond that of a specialist undertaking the same task in a comparable scenario.

Typically, an engine rebuild entails a time commitment of approximately 30 to 40 hours. This estimate assumes that all required parts are readily available and no unforeseen complications arise during the process.

When undertaking a DIY rebuild, it is important to note that you may not have the luxury of extended uninterrupted periods to dedicate to the project. Furthermore, handling unexpected issues may take longer compared to the promptness exhibited by specialists.

If you choose to rebuild the engine on your own, be prepared to invest both time and money into the process. On the other hand, entrusting the vehicle to specialists often results in a turnaround time of a few days, at most.

Is It Better To Replace An Engine Or Rebuild It?

From a cost perspective, opting for a rebuild is consistently the more advantageous choice. While replacing the engine may offer quicker results, it comes with a significantly higher price tag.

If you have the financial resources, it is highly recommended to proceed with rebuilding your Subaru engine when advised to acquire a new one. If you prefer some assistance during the DIY rebuild process, an alternative is to purchase Subaru engine rebuild kits.

The cost of these kits typically ranges between $140 and $600, depending on your Subaru model and the number of required parts. Alternatively, another viable option is to consider purchasing a rebuilt Subaru long block, offering practicality and convenience.

A long block engine refers to a fully assembled engine that comes with cylinder heads included. Opting for a long block means you can simply install the engine into your vehicle without the need to disassemble and reassemble it.

The cost of a rebuilt Subaru long block will vary depending on your specific Subaru model. On average, you can expect to invest between $5000 and $6000 for a rebuilt Subaru long block, providing a convenient option for engine replacement.

The Benefits of a Rebuilt Subaru Engine

Embarking on a Subaru engine rebuild yields a multitude of benefits, and here are some of the most sought-after advantages:

  • Extended Engine Life: Rebuilding your original engine allows you to surpass its perceived lifespan, granting it a new lease on life. This proves to be a cost-effective solution compared to investing in a brand-new replacement engine.
  • Increased Mileage Efficiency: A rebuilt Subaru engine enables your vehicle to cover more miles while minimizing its environmental impact. This means you can enjoy extended usage without contributing excessive pollution.
  • Enhanced Engine Longevity: During the rebuilding process, various components are replaced, resulting in an engine that boasts increased durability and extended lifespan. This ensures a more reliable and resilient powertrain.
  • Immediate Performance Improvement: By rebuilding the engine, you bypass the adjustment period associated with installing a new engine. As a result, your vehicle will deliver immediate and noticeable performance improvements, allowing you to experience optimal performance with your original engine.

Factors to Consider When Choosing an Engine Rebuild Specialist

The cost to rebuild a Subaru engine is an essential consideration for any Subaru owner who wants to restore their vehicle's performance and extend its lifespan. However, it is equally crucial to choose a reliable and experienced rebuild specialist to ensure the quality and longevity of the rebuilt engine.

When embarking on the search for a rebuild specialist, there are several key factors that should be taken into account to make an informed decision.

1. Certifications and Expertise

One of the primary factors to consider when selecting a rebuild specialist is their certifications and expertise. Look for specialists who have been certified by reputable organizations, such as the Automotive Service Excellence (ASE).

These certifications serve as a testament to the specialist's knowledge and skills in engine rebuilding. Additionally, consider their experience in working with Subaru engines specifically, as this will demonstrate their familiarity with the intricacies of Subaru models.

2. Customer Reviews and Testimonials

Another vital aspect to evaluate when choosing a rebuild specialist is the feedback from previous customers. Customer reviews and testimonials can provide valuable insights into the specialist's professionalism, workmanship, and overall customer satisfaction.

Look for rebuild specialists who have a track record of positive reviews and testimonials, as this indicates a higher likelihood of receiving quality service.

3. Warranties and Guarantees

Rebuild specialists who are confident in the quality of their work will often offer warranties or guarantees on their rebuilt engines. These warranties provide reassurance that the specialist stands behind their work and are willing to address any issues that may arise after the engine rebuild.

Prioritize rebuild specialists who offer comprehensive warranties, as this ensures that you are protected against any unexpected complications or premature failures.

4. Pricing Transparency

Cost is undeniably a significant factor when considering an engine rebuild. It is essential to choose a rebuild specialist who offers pricing transparency. Reputable specialists will provide detailed breakdowns of the costs involved in the rebuild process, including parts, labor, and any additional fees.

This transparency allows you to make an accurate assessment of the overall cost and ensures that there are no hidden charges or surprises down the line.

5. Finding Trustworthy Rebuild Specialists

Now that we have explored the key factors to consider, let's discuss how to find trustworthy rebuild specialists in your area. One effective method is to seek recommendations from fellow Subaru owners or automotive enthusiasts. Their firsthand experiences can provide valuable insights and help you narrow down your options.

Additionally, utilize online resources such as review websites and forums dedicated to automotive discussions. These platforms often feature discussions and recommendations regarding rebuild specialists. Take the time to read through the experiences shared by others to gain a better understanding of the rebuild specialists in your area.

When you have identified potential rebuild specialists, don't hesitate to reach out to them directly. Schedule a consultation or visit their facility to assess their professionalism and expertise firsthand. Ask questions regarding their certifications, warranties, and pricing structure to ensure that they align with your expectations and requirements.

Other FAQs About the Cost to Rebuild Subaru Engine
How long does the average Subaru engine last?

The average lifespan of a Subaru engine typically spans around 100,000 miles. However, this duration can vary based on the specific Subaru model and the driving style employed. For instance, the turbocharged engine found in the WRX generally has a shorter lifespan compared to the non-turbocharged engines.

Additionally, driving habits significantly impact the longevity of an engine. Those who push their Subaru to its limits, such as engaging in racing or off-roading activities, are likely to witness a shorter lifespan for their engine.

Nonetheless, with adequate care and regular maintenance, most Subaru engines can surpass the 200,000-mile mark and continue running smoothly.

Can a Subaru last over 200k miles?

The dependability of a Subaru vehicle beyond the 200,000-mile mark can fluctuate depending on various factors, including the specific model, maintenance records, and driving circumstances.

As a rule, Subaru vehicles have established a reputation for reliability and endurance, and numerous Subarus have demonstrated the ability to maintain smooth operation even after surpassing 200,000 miles with meticulous maintenance and attentive care.

Consistent oil changes, timely repairs, and diligent response to warning indicators contribute to prolonging the lifespan of a Subaru vehicle and ensuring its consistent reliability. Nevertheless, similar to any automobile, there is a possibility that certain components may experience wear and tear or sustain damage as time progresses, necessitating repairs or the need for replacements.

What is so special about Subaru engine?

Subaru engines have gained recognition for their exceptional strength, dependability, and impressive performance, which can be attributed to several key factors that contribute to their esteemed reputation:

  • Boxer Engine Design: The unique boxer engine layout, with horizontally opposed cylinders, offers advantages such as improved balance, lower center of gravity, and reduced vibrations, resulting in enhanced stability and efficiency.
  • High-Quality Materials: Subaru engines are crafted using top-grade materials, ensuring durability and longevity. The use of quality components helps maintain optimal performance and reliability over time.
  • Symmetrical All-Wheel Drive: Subaru's renowned symmetrical all-wheel drive system provides superior traction and control, enhancing stability and handling in various road conditions. This feature contributes to the overall reliability and performance of Subaru vehicles.
  • Regular Maintenance: Proper and timely maintenance plays a crucial role in preserving the longevity and efficiency of Subaru engines. Adhering to scheduled maintenance intervals, including oil changes, filter replacements, and inspections, helps prevent potential issues and ensures optimal engine performance.
  • Engineering Excellence: Subaru's commitment to engineering excellence is reflected in the meticulous design and precision manufacturing of their engines. By focusing on innovation, research, and advanced technologies, Subaru consistently delivers engines that excel in performance, fuel efficiency, and reliability.
What is the most powerful engine of Subaru?

The Subaru WRX STI EJ25 stands as the most potent Subaru engine, thanks to its exceptional features and capabilities. This engine boasts a 2.5-liter turbocharged boxer engine renowned for its remarkable strength, high performance, and outstanding durability.

With a power output of 305 horsepower and a torque of 290 lb-ft, it delivers exhilarating performance and an engaging driving experience. The combination of its turbocharging technology, boxer engine design, and meticulous engineering results in an engine that exemplifies power, efficiency, and reliability in the Subaru lineup.


Undertaking a Subaru engine rebuild entails a substantial financial commitment, yet it generally proves to be a more cost-effective choice compared to purchasing a brand-new engine. On average, the cost of an engine rebuild falls within the range of $2500 to $4000.

The expenses associated with a rebuild can vary depending on several factors. Opting for a do-it-yourself (DIY) rebuild typically results in lower costs, whereas a rebuild performed at a dealership tends to be the most expensive option.

Additionally, incorporating new parts into the rebuild process will raise the final price but also extend the overall lifespan of your engine.

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