How much does it cost to get a Subaru engine rebuilt?

Rebuilding a Subaru engine typically costs between roughly $3,000 and $8,000, depending on the model, the extent of damage, and the parts chosen. In higher-cost markets or for very extensive damage, prices can exceed this range.

Understanding the price requires looking at what a rebuild involves, where the work happens, and which engine family you’re dealing with. Subaru’s flat-four layout (EJ, FA, and related generations) means costs can vary based on engine type, head work, and whether you’re aiming for OEM reliability or aftermarket options. Below is a detailed look at the factors and typical price ranges you may encounter.

What affects the price

The following factors largely determine how much a Subaru engine rebuild will cost, from the simplest to the most involved jobs.

• Engine family and generation (e.g., EJ vs. FA) and overall mechanical complexity


• Extent of damage and rebuild scope (gasket-only versus full piston/rod/valve work)


• Head gasket replacement and any head work (surfacing, valve job, resurfacing) required


• Machining and shop services (block honing, deck resurfacing, valve-seat work)


• Parts quality and source (OEM vs aftermarket; new vs remanufactured components)


• Timing components replacement (timing belts/chains, tensioners, guides)


• Auxiliary components replaced during rebuild (water pump, oil pump, seals, rad/hoses)


• Labor rates and total hours (regional differences; dealer vs independent shop)


• Engine core availability and core charge (whether you supply a core)


• Decision to rebuild the existing engine vs. installing a remanufactured or used engine

Understanding these factors helps buyers compare quotes and anticipate the total bill, not just the core engine price.

Typical price ranges by scenario

Prices vary by region, shop, and the specific Subaru engine, but these ranges reflect common quotes in the United States for 2024–2025 scenarios.

• Basic rebuild of a relatively healthy engine (gaskets, seals, bearings, rings, and minor machining) — roughly $3,000 to $5,500


• Moderate rebuild with head gasket replacement and some head work (surfacing or valve service) — roughly $4,500 to $7,500


• Full rebuild with extensive machining and OEM parts (heads fully serviced, bearings/pistons upgraded as needed) — roughly $6,000 to $9,000


• Remanufactured long-block or engine replacement installed (new/retrofit core plus labor) — roughly $5,000 to $9,000 total, depending on engine type and core cost

Note: These figures assume labor rates in the $100–$180 per hour range and typical shop markup on parts. Regions with higher labor costs or limited availability of Subaru-trained technicians can push prices higher. Always request itemized estimates that separate parts, labor, machining, and any core charges.

What to watch when getting quotes

To avoid surprises, ask for a written, itemized estimate and clarify what is included or excluded. Common differences between quotes include the extent of machining, whether head work is included, the brand of gaskets, and whether the motor mounts, timing components, water pump, and seals are replaced. Some shops offer warranties on the rebuilt engine; verify coverage length and what failure scenarios are excluded.

Summary

For most Subaru engines, a rebuild costs in the mid three to mid five figures in dollars, depending on engine type, damage, and parts choice. In many cases, buyers opt for a rebuild that approaches the high end of the basic-to-moderate range if head work and machining are required. Alternatives like a remanufactured long-block or a used engine can offer a different balance of price and reliability. The best approach is to obtain multiple, itemized quotes from reputable shops that specialize in Subaru engines and to weigh long-term reliability and warranty alongside upfront cost.

Summary of key takeaways

A rebuild generally runs from about $3,000 to $8,000, with higher costs for extensive head work, machining, or OEM parts. Labor is the major cost driver, and engine family (EJ vs. FA) affects complexity. Always get an itemized quote and consider warranty options and future maintenance when choosing between a rebuild, remanufactured engine, or used replacement.

Is it cheaper to rebuild or replace an engine?

It is usually cheaper to rebuild an engine ($2,500–$4,000) than to replace it ($4,000–$6,000), especially if the vehicle is in good condition otherwise and the damage is not extensive. However, if the engine is severely damaged or the vehicle is older with high mileage (over 155,000 miles), replacement may become more cost-effective. 
This video explains the cost comparison between rebuilding and replacing an engine: 59sMytonYouTube · Nov 26, 2017
Engine rebuild

• Cost: Typically ranges from $2,500 to $4,000. 
• Best for: Minor engine damage, simple wear and tear, and vehicles with less than 155,000 miles. 
• Pros: Can be significantly cheaper than replacement, especially if only a few parts are needed. It allows you to address specific known issues and can restore the original engine's life. 
• Cons: Can be time-consuming. The final cost can approach or exceed replacement if the damage is more extensive than initially thought. 

Engine replacement

• Cost: Generally ranges from $4,000 to $6,000, but can be higher depending on the engine and parts. 
• Best for: Engines with significant damage or older vehicles (over 155,000 miles) where other systems may also be failing. 
• Pros: Can be faster than a rebuild. A remanufactured or refurbished engine may be more reliable than a rebuild and comes with a warranty. 
• Cons: Can be more expensive upfront than a rebuild. The cost of parts and labor can add up quickly. 

How to decide

• Assess the vehicle's overall condition: If the rest of the car is in good shape, rebuilding or replacing the engine is likely worthwhile. If other components are failing, the money might be better saved by getting a new car. 
• Consider the severity of the damage: Simple fixes are best for a rebuild, while severe damage might make replacement a better choice. 
• Talk to a mechanic: Get a professional opinion on the damage and cost estimates for both options. They can help determine the most cost-effective solution for your specific situation. 

You can watch this video to learn how to rebuild an engine: 1mYeah Buddy GarageYouTube · Jul 23, 2025

Are Subaru engines expensive to fix?

The cost to replace a Subaru engine can vary depending on factors such as the model year, engine type, and labor costs. On average, the cost to replace a Subaru engine can range from $3,000 to $5,000 or more, including parts and labor.

What is the life expectancy of a Subaru engine?

A well-maintained Subaru engine can last 200,000 to 300,000 miles or more, with some drivers reporting even higher mileage. The longevity of the engine depends heavily on regular maintenance, including oil changes and fluid checks. The boxer engine's design helps with longevity by minimizing vibrations and stress on components. 
Factors influencing engine life

• Regular maintenance: Consistent and timely maintenance, especially oil changes with synthetic oil, is the most crucial factor for a long-lasting engine. 
• Driving conditions: Driving style and conditions, such as avoiding constant high-stress situations, can also impact the engine's lifespan. 
• Engine design: The horizontally opposed "boxer" engine layout balances forces, which reduces wear and tear on internal components compared to other engine types. 

Specific model examples

• Forester: Many well-maintained Subaru Foresters can reach 200,000 to 250,000 miles, with some exceeding 300,000 miles. 
• Outback: A well-maintained Subaru Outback can last between 200,000 and 300,000 miles. 
• Crosstrek: Some owners report their Crosstrek engines are designed to last up to 300,000 miles with proper care. 

What to expect at high mileage

• At or around 150,000 miles, it is common to see wear and tear on components like engine seals, water pumps, and timing belts, which may require repair or replacement. 
• Even with a well-maintained engine, be prepared for potential repairs as a vehicle accumulates higher mileage. 

Can Subaru engines be rebuilt?

A Subaru engine rebuild specialist will remove the old engine and completely disassemble it. Each part gets inspected and cleaned, with any damaged parts getting replaced. The engine will get rebuilt with new seals, gaskets, and lubricants.