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Which plugs is good for Toyota Yaris?

The best spark plugs for a Toyota Yaris are the OEM-recommended iridium or platinum plugs suited to your specific engine and year. Copper plugs are cheaper upfront but wear faster and may require more frequent changes. Always confirm the exact part and gap from your owner's manual or a dealer.


Understanding the Yaris engine landscape


The Toyota Yaris has been offered with several engines across generations and markets. The most common modern configurations include small-displacement 1.0–1.5 liter engines that favor long-life plugs to minimize maintenance. Because the right plug depends on the exact engine family and year, it’s essential to verify the specification for your car rather than assuming a single universal option.


Plug types and what they mean


Below is a quick guide to the main spark plug options you’ll encounter when shopping for a Yaris replacement. Each type has its own balance of lifespan, price, and performance.



  • Iridium spark plugs — renowned for long life and stable performance, commonly used on newer Yaris models and many modern Toyota engines.

  • Platinum spark plugs — offer good performance and longer life than copper, and are a common OEM choice for many Toyotas.

  • Copper core spark plugs — the least expensive option with good initial performance but shorter service life; more common on older or budget-focused models.


Conclusion: In most cases, iridium or platinum plugs are the preferred choice for a Toyota Yaris, aligned with the manufacturer’s recommendations. Copper plugs may be acceptable if you’re prioritizing upfront cost and are prepared for more frequent replacements.


Choosing by model and year


To tailor your replacement, identify your Yaris’ exact engine code and year. Use these steps to find the right plug:



  • Consult the owner’s manual or service booklet for the recommended plug type and gap for your engine.

  • Use Toyota’s official parts catalog or a trusted retailer and enter your VIN or engine code to obtain the exact OEM plug part number.

  • If in doubt, ask a qualified technician or your local dealer to confirm compatibility for your trim level and market.


Conclusion: Exact part numbers and gaps vary by engine and market, so verification with a reliable source helps prevent misfits or inefficiencies.


Installation considerations


Once you’ve chosen the right plugs, proper installation supports performance and longevity. Keep these guidelines in mind:



  • Gaps and torque: use the gap and torque specifications from the service manual; many modern Yaris plugs come pre-gapped, and over-tapping can damage seats.

  • Installation practice: cleanly torque plugs to spec, avoid cross-threading, and inspect ignition coils or wires for wear during replacement.

  • Maintenance cadence: adhere to the recommended replacement interval for your plug type to maintain fuel efficiency and smooth running.


Conclusion: Correct installation and adherence to OEM intervals are as important as choosing the right plug type for optimal performance and emissions.


Summary


For a Toyota Yaris, the safest and most reliable choice is OEM-recommended iridium or platinum spark plugs matched to your engine and year. Copper plugs can be a budget option but typically require more frequent changes and may offer less efficiency over time. Always verify the exact part number, gap, and installation torque with your owner's manual or a trusted dealer/parts catalog, and consider professional installation if you’re unsure about the procedure.

What brand does Toyota use for spark plugs?


Toyota primarily uses Denso spark plugs as their original equipment manufacturer (OEM) brand, as the two companies have a close relationship. While NGK is also a high-quality OEM supplier for many Toyota models, using the wrong plug (even from a reputable brand like NGK) can cause performance issues if the heat range is not correct for the specific engine, which is why many recommend sticking to the Denso OEM specification for the best performance. 
Denso

  • Toyota is a major shareholder in Denso, and Denso supplies many components, including spark plugs, to Toyota. 
  • Many sources state Denso is the OEM choice and is the brand recommended to ensure the engine runs correctly, especially for certain models like the Prius. 
  • Toyota Genuine Parts are often manufactured by Denso. 

NGK
  • NGK is also a significant OEM supplier for Toyota and is a high-quality alternative. 
  • However, it's crucial to ensure the specific NGK part number has the exact heat range and specifications required by your engine, as using an incorrect one can lead to poor performance. 
  • Some model years or engines may require NGK over Denso, so it's always best to check your owner's manual or a parts catalog. 

Summary
  • Denso: The most common OEM supplier for Toyota spark plugs, often branded as Toyota Genuine Parts. 
  • NGK: Another high-quality OEM supplier, but it is critical to match the specific heat range to your engine to avoid performance issues. 



What kind of spark plugs does the Toyota Yaris use?


Toyota Yaris Spark Plugs & Glow Plugs

CapacityCylinderRecommended
13004ilkar7b-11
15004bkr5eya-11
15004ifr5t-11
18004ilkar7b-11



What spark plugs for a 2007 Toyota Yaris?


  • Autolite XP Iridium Spark Plug XP3924.
  • Autolite Iridium Ultra Iridium Spark Plug AI3924.
  • Bosch Double Iridium Spark Plug 9600.
  • NGK Iridium IX Iridium Spark Plug 5464.
  • NGK Ruthenium HX Ruthenium Spark Plug 95839.
  • NGK Laser Iridium Spark Plug 4996.
  • DENSO Auto Parts Iridium Spark Plug 5303.



Are NGK plugs good for Toyota?


NGK Spark Plugs:
Consistently recommended for smooth idling and strong cold starts. Excellent ignition timing accuracy. Preferred for import vehicles, particularly Japanese makes like Honda, Toyota, and Subaru.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.