Subaru Impreza Suspension Strut Replacement Guide: 2009-2019
Clunking noises and a bouncy ride in your Impreza are signs that your struts are probably worn out.
- KYB is the recommended brand for an OEM-quality ride; Koni is for performance upgrades.
- Struts must be replaced in pairs (both front or both rear) to maintain vehicle stability.
- A four-wheel alignment is required immediately after replacing struts to prevent tire damage.
- Listen for clunking over bumps and look for a bouncy ride—these are the most common signs of failure.
Is Your Impreza's Ride Getting Worse? Signs of Failing Struts
When new, your Impreza has a controlled and stable ride. As struts wear out, usually between 50,000 and 100,000 miles, you'll notice a clear decline in ride quality and handling. Ignoring these signs can lead to more expensive repairs and make the car unsafe.
Common Symptoms
- Clunking or Banging Noises: A deep clunk when you drive over bumps or potholes is a classic sign of a bad strut. You might also hear a popping or creaking sound when turning at low speeds, which can point to a worn strut mount.
- Bouncy and Unstable Ride: If the car feels like it's floating or bounces several times after hitting a bump, the struts are no longer damping the springs effectively. You may also feel the car sway or lean excessively in turns.
- Nose-Diving and Squatting: Worn front struts can cause the car's nose to dip sharply when you brake. Failing rear struts can make the back end squat down when you accelerate.
- Visible Leaks: Struts are filled with hydraulic fluid. If you see oily fluid on the outside of the strut body, it means the internal seals have failed and it needs to be replaced. 🎬 Watch: How to diagnose a bad strut or shock
- Uneven Tire Wear: Bad struts can cause the tires to bounce, leading to a specific type of wear called 'cupping' or 'scalloping'. This looks like high and low spots on the tire tread.
Known Issues for 2009-2019 Impreza
While there are no major recalls for struts on these models, Subaru has issued several Technical Service Bulletins (TSBs) for related noises:
- TSB #05-75-20R: For 2017-2019 models, this addresses a cracking sound from the front suspension when turning, caused by the coil spring interfering with the strut bearing.
- TSB #05-61-16: For 2016 models, this bulletin relates to a popping sound during low-speed turns and points to a design change in the front strut mounts.
- TSB #05-62-18R: For 2018 models, this provides a fix for surface rust building up on the front strut mounts.
These TSBs show that noises from the front suspension are a known issue. When replacing struts, it's a good idea to use updated parts or replace related components like strut mounts at the same time.
Choosing the Right Aftermarket Struts for Your Impreza
You don't have to buy parts from the dealer. Aftermarket brands offer a range of options. Here’s how the available brands stack up for your Impreza.
Brand Quality Tiers
- OEM-Equivalent (Best Overall): KYB
KYB is widely known to be the original equipment manufacturer (OEM) for Subaru struts. Choosing KYB Excel-G struts is the closest you can get to restoring the car's original ride and handling. They are the top recommendation for durability and performance that matches the factory feel. - Performance Upgrade: Koni
Koni Sport (yellow) struts are for the owner who wants to improve handling. They are adjustable, allowing you to make the ride firmer for better cornering and less body roll. They are more expensive but offer a noticeable performance gain and are a great match for lowering springs. - Value / Standard Replacement: Monroe
Monroe struts are a common, budget-friendly option. They often provide a softer ride than the original struts. However, many owners report that they don't last as long as KYB and can feel 'loose' or 'soft' sooner. They are a reasonable choice for a higher-mileage car where restoring original performance isn't the main goal. - Economy (Budget-Focused): FCS, PRT
FCS and PRT are budget brands. While the low price is tempting, they are generally considered a significant step down in quality. Forum discussions often describe the ride as poor and question their long-term durability. These are best reserved for a car you plan to sell soon or if budget is the only consideration.
Cost of Replacing Subaru Impreza Struts
| Part / Service | Estimated Cost |
|---|---|
| New OEM Struts (Parts Only) | $160 - $250 per strut |
| New Aftermarket Struts (Parts Only) | $50 - $402 per strut |
| Shop Labor | $300 - $500 |
| Total Professional Replacement (Aftermarket) | $600 - $1300+ |
Frequently Asked Questions
Do I have to replace all four struts at once?
No, but you must replace them in pairs. If you replace the front left strut, you must also replace the front right. The same goes for the rear. Replacing only one strut will cause unbalanced handling and is unsafe.
Do I need a wheel alignment after replacing struts?
Yes, absolutely. Replacing a strut changes the suspension geometry. A four-wheel alignment is mandatory after the job is done to prevent rapid and uneven tire wear, and to ensure the car drives straight.
Should I use 'quick struts' or replace just the strut cartridge?
Using a complete 'quick strut' assembly is highly recommended. It saves labor time and is much safer than using a spring compressor to move the old spring to the new strut. It also replaces the strut mount and boot, which are likely worn out anyway.
Can I install struts myself?
If you are an experienced DIY mechanic with the right tools, yes. However, if you are not using quick struts, the job requires a spring compressor, which can be very dangerous if used incorrectly. For most people, this job is best left to a professional mechanic.
🎬 Watch: 2012 Subaru Impreza rear quick strut replacement guideHelpful Videos
Technical Specifications
OEM Part Numbers: 20365FL00A
Compatibility is critical and depends on the specific model year, trim (Base, Premium, Sport), and even the original wheel size (steel vs. alloy). Always verify the part number for your specific vehicle before ordering. Relevant TSBs include #05-75-20R, #05-61-16, and #05-62-18R.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Subaru Impreza:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Impreza's Ride Getting Worse? Signs of Failing Struts
- Common Symptoms
- Known Issues for 2009-2019 Impreza
- Choosing the Right Aftermarket Struts for Your Impreza
- Brand Quality Tiers
- Cost of Replacing Subaru Impreza Struts
- Frequently Asked Questions
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