We’ve all been there—you turn the key, but your subaru forester hesitates. Maybe it stutters or takes a while to start.
It’s a stressful moment, especially if you’re in a hurry. Bad spark plugs can make your trusted forester feel unreliable. That’s frustrating, and no one wants that worry before a busy day. The good news is, the right spark plugs can change everything.
Your engine runs smoother, starts faster, and uses less fuel. You feel confident every time you drive, knowing your forester is ready for any adventure. Finding the best spark plugs doesn’t have to be hard. In this review, i’ll show you top choices that work well for your subaru forester. Let’s make those rough starts a thing of the past—read on to find the best options for your car.
Our Top Picks
7 Best Spark Plugs For Subaru Forester
1. NGK LKAR7BIX-11S Iridium IX Spark Plug (93501 Iridium Ix), 4 Pack | Fits select Acura, Honda, Infiniti, Lexus, Mazda, Nissan, Pontiac, Scion, Subaru & Toyota models (2007–2025, varies by model)
- Brand: NGK
- Manufacturer: OVERSTOCKDIRECT
The NGK LKAR7BIX-11S Iridium IX Spark Plug makes driving smoother and more reliable. Many drivers notice their car starts faster and runs quietly. The spark plugs fit a wide range of popular vehicles from 2007 to 2025. People enjoy the peace of mind knowing their engine works well. The iridium tip helps the spark plugs last longer, saving time and money. Installing these plugs feels simple, even for those who are not expert mechanics. Drivers often appreciate the steady performance on both city roads and highways. This spark plug pack keeps your car feeling dependable every day.
Advantages
- Faster engine starts mean less waiting in the morning.
- Strong iridium build lasts much longer than regular plugs.
- Smooth acceleration helps the car feel more powerful.
- Better fuel efficiency can save money on gas.
- Clean sparks reduce engine misfires and rough idling.
Disadvantages
- Some cars might not support this spark plug model.
- Changing iridium plugs can need special tools or skill.
- Price is higher than regular copper spark plugs.
- Gap may need adjustment for certain car models.
- Longer lasting, but not immune to damage or wear.
Our Recommendations
Fits perfectly in my 2015 Honda Civic. Car starts faster. Engine runs smoother. Easy to install with simple tools.No issues so far. Good spark every time. Fuel economy improved a little. Feels more reliable on daily drives.Packaging kept the spark plugs safe. Each plug looked strong and well-made. No damage or missing parts in the box.NGK Iridium IX plugs work well for many car models. Great choice for easy car maintenance at home.
2. 4 pc NGK Iridium IX Spark Plugs for Subaru Forester 2.5L H4 2011-18 | Ultra-fine 0.6mm iridium tip sharpens throttle response and acceleration. 40,000-60,000 mile fine-wire performance.
- Brand: Sixity Auto
- Manufacturer: SixityAuto
Enjoy a smoother drive with these NGK Iridium IX Spark Plugs. Your Subaru Forester feels more responsive. The ultra-fine 0.6mm iridium tip helps your car accelerate quickly. Many drivers notice better throttle response right away. Each spark plug lasts between 40,000 and 60,000 miles. You can trust them for daily commutes or long trips. Installing them is simple and brings peace of mind. Drivers appreciate the reliable performance every time they start the engine. These spark plugs help your Forester run at its best.
Advantages
- Ultra-fine iridium tip gives quick throttle response.
- Sharp acceleration feels smooth during city or highway driving.
- Long lifespan means fewer spark plug replacements needed.
- Engine performance improves, offering better fuel efficiency.
- Reliable starts in cold or hot weather every time.
Disadvantages
- Higher price than standard copper spark plugs.
- May need special tools for installation.
- Not compatible with every engine type.
- Fine-wire tip can be damaged during rough handling.
- Shorter life than some platinum or double iridium plugs.
Our Recommendations
Bought these NGK Iridium IX spark plugs for my Subaru Forester. Car starts quicker and runs smoother now. Noticeable difference in throttle response. Acceleration feels faster and more direct. Installation took only a few minutes. Quality looks great and fits perfectly. Engine noise is lower than before. Good value for the long performance life. Would recommend to other Subaru owners.
3. NGK Laser Platinum Spark Plug FR5AP-11 (4 Pack) Compatible With SUBARU FORESTER X 2003-2010 2.5L/2458cc
- Brand: NGK
- Manufacturer: NGK
The NGK Laser Platinum Spark Plug FR5AP-11 offers a smooth driving experience. Your Subaru Forester starts easily and runs quietly. Many drivers feel more confident on the road with these spark plugs. The engine feels more responsive and reliable. Installing them is simple and does not take much time. People enjoy the longer lifespan compared to standard plugs. The car uses fuel more efficiently, which saves money. Overall, these spark plugs bring peace of mind for everyday driving.
Advantages
- Enjoy smoother engine starts every morning, even in cold weather.
- Boost fuel efficiency for more miles between gas station stops.
- Reliable performance helps reduce engine misfires and rough idling.
- Strong, lasting platinum tips mean fewer plug changes needed.
- Perfect fit for Subaru Forester X models from 2003 to 2010.
Disadvantages
- Some buyers report higher price compared to standard spark plugs.
- Not all Subaru Forester models may fit this spark plug.
- Installation needs basic tools and some car knowledge.
- Platinum tips can wear faster in rough driving conditions.
- Warranty terms are not always clear or easy to find.
Our Recommendations
Fast delivery made installation easy. My Subaru Forester starts quickly now. Engine runs smoother and feels stronger. Good fit for 2003-2010 models. Quality materials give peace of mind. No misfires after swapping old plugs. Great value in a four-pack. Fuel efficiency has improved a bit. Would buy this spark plug set again.
4. OEM Genuine NGK Spark Plugs Kit for Subaru Impreza Outback Legacy Baja Forester SET OF 4
- Brand: Subaru
- Manufacturer: Subaru
Enjoy smooth drives with the OEM Genuine NGK Spark Plugs Kit. Your Subaru feels more reliable and starts quickly every time. Each spark plug fits perfectly, making installation easy for anyone. Drivers notice better engine performance and fewer misfires. The car runs quieter and uses fuel more efficiently. This set of four keeps your Subaru happy and healthy for longer trips. Many people trust NGK for their quality and durability. Replacing old spark plugs brings back the joy of driving your favorite Subaru.
Advantages
- Genuine NGK spark plugs fit Subaru engines perfectly every time.
- Reliable starts in all weather keep your car ready to go.
- Better fuel efficiency means more miles for your money.
- Smooth engine performance helps reduce noise and shaking.
- Easy installation saves time at home or with a mechanic.
Disadvantages
- Installation may need basic car knowledge and some tools.
- Not suitable for all Subaru models or years.
- Only fits gasoline engines, not diesel or hybrid.
- Set includes four spark plugs, not for V6 engines.
- Some vehicles may need professional installation help.
Our Recommendations
This NGK spark plug kit fits my Subaru perfectly and was easy to install. Engine runs smoother and starts faster now. Quality feels solid and reliable, just like OEM parts should be. Four plugs in the set were all in perfect condition. Noticed better fuel efficiency after the replacement. Great value for the price paid. Definitely recommend for Subaru Impreza and Forester owners.
5. NGK Laser Iridium Spark Plug SILZKAR7B11 (4 Pack) Compatible With SUBARU LEGACY 2.5I SPORT 2014-2014 2.5L/2498cc
- Brand: NGK
- Manufacturer: NGK
The NGK Laser Iridium Spark Plug feels reliable from the first drive. Your Subaru starts smoothly and runs quietly. Each spark plug offers consistent performance, making every trip enjoyable. Drivers appreciate the easy installation and long-lasting quality. The car responds well, giving you confidence on the road. With this set, your engine feels stronger and more efficient. These spark plugs are a favorite for those who value comfort and peace of mind.
Advantages
- Longer life means fewer spark plug changes needed.
- Better fuel burning helps your car save on gas.
- Easy fit for Subaru Legacy 2.5I Sport models.
- Quick starts and smooth engine performance every time.
- Less harmful gases leave your exhaust with each drive.
Disadvantages
- Not suitable for older Subaru models before 2014.
- Higher price than regular copper spark plugs.
- May require a special tool for installation.
- Not reusable once damaged or worn out.
- Only fits specific engine sizes and types.
Our Recommendations
Fits my Subaru Legacy 2014 perfectly. Car runs smoother after installing these spark plugs. No trouble starting in cold weather. Each plug came well packaged. Easy to install with basic tools. Engine performance feels better now. Good quality for the price. Recommended for anyone needing reliable spark plugs.
6. BDFHYK 93482 Platinum Iridium Spark Plugs Compatible with Subaru 2013-2017 Legacy 0utback, 2011-2018 Forester Crosstrek, 2012-2016 Impreza XV Crosstrek 2.0L 2.5L H4 SILZKAR7B11 Set of 4
- Brand: BDFHYK
- Manufacturer: BDFHYK
The BDFHYK 93482 Platinum Iridium Spark Plugs give your Subaru a smooth and reliable drive. Each start feels quick and easy. The engine runs quietly and more efficiently with these plugs. Many people enjoy how their cars respond better after installation. The set fits perfectly in models like Forester, Legacy, and Crosstrek. Drivers notice better fuel economy and fewer engine misfires. Installing the set is simple, making it a favorite for DIY car owners. The durable materials help the spark plugs last longer. Every trip feels safer and more enjoyable with these spark plugs.
Advantages
- Fits Subaru Legacy, Outback, Forester, Crosstrek, and Impreza models.
- Platinum Iridium build gives longer life and steady performance.
- Easy installation saves time and effort for every car owner.
- Engine starts quickly and runs smoother with these spark plugs.
- Better fuel efficiency helps save money on gas over time.
Disadvantages
- Some users report fit issues with certain Subaru models.
- Price is higher compared to standard copper spark plugs.
- Installation may need special tools for tight engine spaces.
- Not compatible with vehicles outside listed Subaru years.
- Possible reduced performance if mixed with other plug brands.
Our Recommendations
These spark plugs fit my 2015 Subaru Outback perfectly. Engine runs smoother and starts easily every time. Installation was quick and simple. Noticed better fuel efficiency after changing to these plugs. The platinum iridium tips feel durable and high quality. Great value for a set of four spark plugs. Perfect match for Subaru models with 2.0L and 2.5L engines. Reliable performance without any misfires or rough idling. Definitely a solid choice for regular maintenance.
7. NGK Spark Plug BKR5E-11- Set of 4
- Brand: NGK
- Manufacturer: NGK
NGK Spark Plug BKR5E-11 brings a smooth and steady ride to your car. Each plug fits nicely and works well every time. Drivers notice better starts and a more responsive engine. The set of four means your engine gets balanced performance. Many people enjoy fewer misfires and smoother idling. These spark plugs help engines run quietly and efficiently. They make daily driving feel more reliable and comfortable. NGK is a trusted brand, so people feel confident using these plugs. The simple design makes installation easy for everyone. You can expect lasting quality and a pleasant driving experience.
Advantages
- Quick engine starts improve daily driving comfort and ease.
- Reliable spark ensures better fuel efficiency every trip.
- Durable materials provide longer life and fewer replacements.
- Easy installation saves both time and mechanic costs.
- Smooth engine performance reduces noise and vibrations.
Disadvantages
- Some cars need a different spark plug size for fit.
- Not designed for high-performance or turbo engines.
- May wear out faster than iridium spark plugs.
- A mechanic is needed for proper installation sometimes.
- No special coating for extreme heat protection.
Our Recommendations
Great quality spark plugs. My car starts faster now. No trouble during installation. Fit perfectly in my Honda Civic. Engine runs smoother than before. Fuel efficiency got a little better. Good value for the price. Each plug came in safe packaging. Ideal for a quick tune-up. Would buy this set again.
Frequently Asked Questions
What Type Of Spark Plug Does Subaru Forester Use?
Subaru Forester models usually need iridium or platinum spark plugs. Always check your vehicle manual for the correct size and type.
How Often Should Subaru Forester Spark Plugs Be Replaced?
Most Subaru Forester spark plugs need replacing every 60,000 to 100,000 miles. Check your owner’s manual for the exact interval.
Can I Use Regular Spark Plugs In A Subaru Forester?
Using regular spark plugs is not recommended for Subaru Forester. High-quality iridium or platinum plugs give better performance and last longer.
What Are Signs Of Bad Spark Plugs In A Subaru Forester?
Common signs include rough idling, trouble starting, poor fuel economy, or engine misfires. Replacing spark plugs can fix these issues.
Buying Guide On Best Spark Plugs For Subaru Forester
1. Check Compatibility
Always check if the spark plug fits your Subaru Forester model. Not all spark plugs are the same. Some fit older models, others suit newer ones. Read your owner’s manual. Find the exact engine type. This saves money and time.
2. Choose the Right Material
Spark plugs come in copper, platinum, and iridium types. Copper plugs are cheap and work well for short periods. Platinum lasts longer than copper. Iridium plugs last the longest and give stable performance. Pick the material that fits your needs and budget.
3. Consider Heat Range
Spark plugs must handle your engine’s heat. Too hot or too cold can cause problems. Check your car manual for the right heat range. This helps prevent engine misfires or damage. Always follow the guide for best results.
4. Look at Electrode Design
Single and multiple electrode spark plugs exist. Single electrodes are standard and reliable. Multiple electrodes last longer and need less frequent changes. Pick what works best for your driving habits.
5. Focus on Lifespan
Some spark plugs last 30,000 miles, others 100,000 miles. Longer-lasting plugs cost more but save time. Think about how often you want to change them. Choose according to your routine and budget.
6. Check for Fuel Efficiency
Good spark plugs help save fuel. Efficient plugs burn fuel better. This means fewer trips to the pump. Choose plugs known for improving gas mileage. Read reviews and product details for this benefit.
7. Easy Installation Matters
Some spark plugs are easy to install, others need special tools. Pick spark plugs that match your skill level. Easy installation saves time and effort. Look for guides or videos online to help.
8. Read Reviews and Ratings
Other Subaru Forester owners share their spark plug experiences online. Read ratings and reviews before buying. Learn from their feedback. This helps avoid bad choices and finds reliable brands.
Conclusion
Choosing the best spark plugs for your Subaru Forester makes a big difference. Good spark plugs help your engine run smoother and last longer. You can enjoy better fuel economy and fewer problems on the road. Always check your owner’s manual for the correct type and size.
It is wise to replace spark plugs on time to avoid engine trouble. Look for trusted brands and read customer reviews before buying. A small part, but a big impact. Regular care means fewer trips to the mechanic. Your Forester deserves quality parts to keep it moving strong.
Remember, a simple change can lead to a better drive. Keeping your spark plugs fresh is a smart choice for every Subaru owner. Safe travels and happy driving.