Subaru Crosstrek drivers demand reliable ignition performance for smooth starts and steady fuel efficiency. Spark plugs play a key role in keeping the engine responsive on city roads and rough trails. This guide highlights five top spark plugs that boost power, improve mileage, and reduce misfires in Subaru Crosstrek models.
Drivers often notice better throttle response and smoother idling after upgrading to high-quality spark plugs suited for this compact SUV. Each option in this list targets durability, heat resistance, and consistent ignition under varying driving conditions. Right spark plugs help Subaru Crosstrek owners maintain engine health and avoid unnecessary repair costs.
The following recommendations compare material quality, electrode design, and longevity so readers can pick the best spark plugs for daily commuting or off-road driving without confusion. Each product suits different driving styles and engine demands across the Subaru Crosstrek lineup for reliable performance in all weather conditions year-round reliability.
5 Best Spark Plugs For Subaru Crosstrek
| Image | Title | Best For | Link |
|---|---|---|---|
 |
Champion Iridium Plug 4pc | The 4-pack champion iridium spark plugs for subaru crosstrek 2.0l h4 2016-2020 offers exception… more | View on Amazon |
 |
BDFHYK Iridium Plug Set 4 | The bdfhyk platinum iridium spark plugs compatible with subaru legacy, outback, forester, cross… more | View on Amazon |
 |
NGK Laser Iridium Plug 4pc | The 4-pack ngk laser iridium spark plugs for subaru crosstrek 2.0l h4 2018-2020 offers exceptio… more | View on Amazon |
 |
NGK LKAR7BIX 4 Pack | The ngk lkar7bix iridium ix spark plug 4-pack offers exceptional quality and performance. Desig… more | View on Amazon |
 |
Subaru OEM Spark Plug Set 4 | The genuine oem subaru spark plugs for forester, impreza, legacy, crosstrek 2011-2017 2.0l/2.5l… more | View on Amazon |
Our Top 5 Best Spark Plugs For Subaru Crosstrek Reviews – Expert Tested & Recommended
1. 4-Pack Champion Iridium Spark Plugs for Subaru Crosstrek 2.0L H4 2016-2020
The Champion Iridium Plug delivers consistent ignition and long-lasting performance, making it ideal for drivers who want reliability without sacrificing efficiency. These plugs feature a fine-wire iridium center electrode that enhances spark consistency and reduces maintenance intervals. Designed specifically for the Subaru Crosstrek 2.0L H4 engine from 2016 to 2020, they offer OE-level fitment and function.
Key Features That Stand Out
- ✓ Fine-wire iridium center electrode for extended life
- ✓ Superior heat range optimized for 2.0L H4 engines
- ✓ Durable construction resists wear and corrosion
- ✓ Easy installation with no special tools required
Why We Recommend It
This set stands out because it combines Champion’s trusted engineering with modern iridium technology. Drivers report smoother starts, improved acceleration, and fewer misfires over time. The plugs also maintain their performance through extreme temperatures, which is crucial for both city driving and mountain terrain typical of the Crosstrek.
Best For
Drivers seeking a high-performance, long-life upgrade that fits their 2016–2020 Crosstrek 2.0L model without breaking the bank.
Pros and Cons at a Glance
2. BDFHYK Platinum Iridium Spark Plugs Compatible with Subaru Legacy, Outback, Forester, Crosstrek 2.0L/2.5L H4
Engineered for multiple Subaru models including the Crosstrek, these BDFHYK plugs deliver strong ignition power and improved fuel economy. Their dual-platinum and iridium design ensures stable sparks across a wide temperature range, reducing the chance of misfires. With TS16949 certification and OE-standard materials, they’re built to last and perform reliably under daily driving conditions.
Key Features That Stand Out
- ✓ Dual platinum and iridium center electrode
- ✓ Wide compatibility with 2.0L and 2.5L H4 engines
- ✓ Enhanced anti-fouling properties
- ✓ Precision-machined for leak-free combustion sealing
Why We Recommend It
As our editor’s pick, this plug set balances performance and versatility. It works seamlessly in various Subaru models, making it a smart choice if you own more than one vehicle or plan future upgrades. Users frequently note quieter idle and better throttle response after installation, especially in older Crosstreks showing early signs of plug wear.
Best For
Owners of multiple Subaru vehicles or those wanting a durable, multi-model solution with excellent value.
Pros and Cons at a Glance
3. 4-Pack NGK Laser Iridium Spark Plugs for Subaru Crosstrek 2.0L H4 2018-2020
If you’re looking for premium performance without the premium price tag, this NGK set delivers impressive results at a budget-friendly cost. Known for precision engineering, NGK uses laser-welded iridium tips that resist erosion and maintain consistent spark delivery over tens of thousands of miles. Perfect for late-model Crosstreks from 2018 onward, it’s a smart upgrade for anyone wanting OEM-like quality affordably.
Key Features That Stand Out
- ✓ Laser-welded iridium tip for maximum durability
- ✓ Ultra-fine center electrode improves ignitability
- ✓ Optimized for 2018–2020 2.0L H4 engines
- ✓ Cost-effective alternative to dealer pricing
Why We Recommend It
This plug earns its spot as the best budget option due to NGK’s reputation for reliability and consistent performance. Many owners report noticeable improvements in fuel economy and smoother idle right after replacement—without spending over $100 like OEM alternatives. It’s particularly well-suited for those who follow manufacturer-recommended service intervals.
Best For
Budget-conscious drivers who still want top-tier performance from their 2018–2020 Crosstrek 2.0L.
Pros and Cons at a Glance
4. NGK LKAR7BIX Iridium IX Spark Plug 4-Pack
The NGK LKAR7BIX is a favorite among performance enthusiasts for its aggressive design and superior anti-fouling capabilities. Featuring a 0.6mm iridium tip and triple-gasket sealing system, this plug excels in demanding conditions. Its tapered ground electrode reduces heat loss while improving flame kernel development—resulting in sharper throttle response and cleaner emissions.
Key Features That Stand Out
- ✓ 0.6mm ultra-fine iridium tip for precise ignition
- ✓ Triple gasket seal prevents combustion leaks
- ✓ Corrugated insulator ribs prevent flashover
- ✓</span”>Longer insulator nose reduces fouling risk
Why We Recommend It
This plug is engineered for reliability under stress. Whether you’re climbing mountain passes or navigating stop-and-go traffic, the LKAR7BIX maintains consistent performance. Owners often notice faster warm-ups and reduced hesitation, especially in colder months. It’s also widely used in motorsports tuning due to its robustness.
Best For
Performance-focused drivers or those living in areas with harsh winters who demand maximum engine responsiveness.
Pros and Cons at a Glance
5. Genuine OEM Subaru Spark Plugs for Forester, Impreza, Legacy, Crosstrek 2011-2017 2.0L/2.5L H4
When it comes to peace of mind, nothing beats factory original equipment. These genuine Subaru spark plugs are designed specifically for your vehicle’s engine management system, ensuring perfect compatibility and optimal performance. Manufactured to strict OEM standards, they include four plugs in one package—ideal for full cylinder head servicing.
Key Features That Stand Out
- ✓ Factory-correct heat range and gap specifications
- ✓ Guaranteed fit for 2011–2017 models
- ✓ Includes 2.0L and 2.5L H4 applications
- ✓</span”>Backed by Subaru warranty and support
Why We Recommend It
If you prioritize OEM authenticity and dealer-level confidence, this is the clear winner. While pricier upfront, it eliminates guesswork and potential compatibility issues. Mechanics and long-time owners swear by Subaru-branded plugs for their consistent quality and trouble-free operation over tens of thousands of miles.
Best For
Owners who prefer factory-grade parts or those servicing older Crosstreks (pre-2018) needing exact OEM replacements.
Pros and Cons at a Glance
Complete Buying Guide for Spark Plugs
Essential Factors We Consider
When selecting the best spark plugs for your Subaru Crosstrek, we evaluate several critical factors. First, engine compatibility is non-negotiable—your plug must match your specific model year and engine displacement (2.0L vs. 2.5L H4). Next, consider the electrode material: iridium offers the longest life and finest tip, while platinum provides a balance of durability and cost. Heat range is another key factor; too hot or too cold can cause poor performance or damage. Finally, always check whether the set includes all necessary hardware and meets OEM or higher standards.
Budget Planning
Spark plug prices vary widely—from under $30 for basic copper sets to over $80 for premium iridium or OEM units. For most Crosstrek owners, investing between $40 and $60 per 4-pack delivers the best blend of performance and value. Remember, cheaper isn’t always better—low-quality plugs can lead to frequent replacements and potential engine issues. Plan accordingly based on your driving habits and maintenance schedule.
Final Thoughts
Upgrading your spark plugs is one of the simplest and most effective ways to maintain your Subaru Crosstrek’s health. Whether you go with a trusted brand like NGK or Champion, or opt for the assurance of OEM parts, choosing the right set will pay off in smoother drives, better fuel economy, and fewer unexpected repairs. Always refer to your owner’s manual for recommended replacement intervals—typically every 30,000 to 60,000 miles.
Frequently Asked Questions
Q: How often should I replace spark plugs in my Subaru Crosstrek?
A: Most manufacturers recommend replacing spark plugs every 30,000 to 60,000 miles, depending on driving conditions and plug type. Iridium and platinum plugs typically last longer than standard copper ones.
Q: Can I use any spark plug in my Crosstrek?
A: No—only plugs rated for your specific engine type (2.0L or 2.5L H4) and model year are recommended. Using incompatible plugs can cause misfires, reduced fuel efficiency, or engine damage.
Q: Do I need to gap my new spark plugs?
A: Some aftermarket plugs come pre-gapped, but it’s wise to verify the gap using a feeler gauge before installation, especially if you’re unsure of the manufacturer’s specs.
Q: Are aftermarket spark plugs as good as OEM?
A: Many high-quality aftermarket brands (like NGK and Champion) match or exceed OEM performance. Just ensure they meet or surpass original specifications for fit, heat range, and materials.
Q: What happens if I don’t replace worn spark plugs?
A: Worn plugs can cause hard starts, rough idle, reduced power, poor fuel economy, and increased emissions. In severe cases, they may trigger check engine lights or damage catalytic converters.
Choosing the best spark plugs for your Subaru Crosstrek doesn’t have to be overwhelming. By focusing on compatibility, material quality, and intended use, you can confidently select a set that keeps your adventure-ready ride running smoothly for years to come. Whether you’re upgrading for daily commutes or weekend adventures, the right spark plugs make all the difference in performance and reliability.