Best Spark Plugs of 2017 | Buying Guide


Best Spark Plugs

When your car doesn’t start or fails to live up to its performance potential, attention turns to the spark plug. These small yet powerful energy sources are vital to getting you on the road and safely back home again.Using the best spark plugs can make a world of difference when it comes to the dependability of your vehicle. If you’re into reliability and plenty of power for your ride, continue reading to learn everything you need to know about spark plugs.

Our guide will give you all of the information that you need to know about spark plugs and show you where to find the best brands and types. We hope that you find this guide and review helpful.

Top 10 Best Spark Plugs

What Spark Plugs do?

Spark plugs emit tiny bolts of electricity across the gap that is inserted into the engine. They generate the force that creates ignition for combustion that makes it possible for the car to start when the key is turned.

When they fail or are not working as well as they should, you’ll have problems starting and operating the car. Some plugs that are designed with advanced technology offer additional features that can enhance your vehicle’s performance beyond those that you’ll achieve with standard plugs. These caps are more expensive, but the benefits can outweigh the small cost difference.

Advantages of Using the Best Spark Plugs

Performance and reliability are the advantages that well-performing spark plugs can give you. While some people may think that they are all the same, this isn’t necessarily true.

Plugs made with high-quality materials and excellent quality will not only last longer. But they will also be more resistant to buildups from the emissions that happen as you operate your vehicle.

Cheaper or inferior plugs tend to foul because of these buildups, and they don’t do the job as well. A high performing spark plug will burn off the deposits before they have a chance to build.

They will help to ensure that you have the power for more strong starts, a better running of the vehicle and greater fuel economy which can save you money at the gas pump. In short, there are quite a few reasons why you should choose the best possible spark plugs for your car.

Weak spark plugs can cause your engine to perform less efficiently. You will have more issues with misfires, cold starting and a drop in engine power while driving. It’s best to avoid these problems by using the right spark plugs.

When Should Spark Plug be Replaced?

This depends on the type that you are using and the manufacturer’s suggestion. If you’re using copper spark plugs, they will need to be replaced more frequently because of wear.

Some of the higher quality plugs will last about four times longer. In general, copper core spark plugs should be replaced around 30,000 miles. A more in-depth description of each type of spark plug below will give you a general guide on how often each should be replaced.

Types of Spark Plugs

There are four different kinds of spark plugs and what sets them apart are the materials that are used in their construction. The copper core is the least expensive on the market, and they are great conductors who give you good performance.

The downside is that this tends to need replacement faster, between 20,000 to 40,000 miles.Iridium spark plugs work best at lower temperatures, and the major benefit is that they last longer than copper.

You’ll get between 40,000 to 60,000 miles of use from them. Iradium is not as good a conductor as copper so the performance is less than you’ll get from a copper core.

Platinum also operates best at the lower temperature, but they offer less in performance. They average double the life of a copper core plug.

Double Platinum plugs use advanced technology to increase the lifespan and improve the performance of your engine. Although platinum is not as good a conductor as copper, they will last longer than any other type of spark plug.

How to Choose the Best Spark Plug?

The rule of thumb is to use high-quality replacements that have a solid reputation for durability and high performance. This will give you the reliability that you need. Plugs made with platinum can help to maximize your fuel mileage which saves you money in the long run.

They perform at an average of 25% longer than those made with other materials such as copper. There is some great competition in the industry and manufacturers are using new technology to create spark plugs with improved performance features. With this said, here are our choices for high performing top quality spark plug options.

10.NGK (4548) CR9EK Standard Spark Plug

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Among the most highly rated spark plugs on the market, the NGK standard is well known for enhancing performance with durability and long life. Resistant to fouling, wear and spark inconsistencies. Other features include corrugated insulator ribs for the prevention of flashover and gasket seal to eliminate leakage of combustion gas.


The NGK has received an excellent ranking of 5 out of 5 stars. They are a little more expensive than the other brands, but the cost is not prohibitive.

They deliver high on performance and durability, and most of this has to do with the materials and design of these high-quality spark plugs. We rate this plug as the best spark plug available on the market.

They excel in enhancing vehicle performance, increasing quick starts, acceleration, and delivery smooth operation. Also, the design of the insulators reduces the incidence of fouling thanks to the longer nose.

The spark is a more consistent because of electrodes designed with a dual ground. Gas combustion leakage is no longer an issue thanks to the triple gasket seal.

Finally, these plugs are highly resistant to corrosion due to the zinc dipped shell. What more can we say? This product is packed with features that boost it to the top of the best spark plug listing.

  • Quick start and smooth acceleration
  • Superior spark and heat dissipation
  • Improves power and mpg

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9.Autolite APP104 Double Platinum Spark Plug

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The shell is made from Nickel plated steel with platinum alloy pad which makes it resistant to corrosion and more durable for longer life. Tips, center, and side electrodes are full platinum for reduced gap wear.

Full platinum advice on both the center and side electrodes promote reduced gap wear for improved plug life. Works to optimize the engine performance for a longer life and improved fuel economy

Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts, more rapid acceleration, and improved fuel economy. Platinum alloy pad which found on ground wire for extended durability and service life and platinum-to-platinum firing.

Nickel-plated steel shell for long-life corrosion resistance.


The majority of users rate this spark plug with excellence for performance and durability. They’re quick firing and improve mpg with excellent performance and reliability.

There are few incidences of poor packaging and cracking due to weaknesses in the porcelain. Some users purchased plugs with improper gap spacing, but the overall response from people who purchases, used and rated this product has been positive with a 4.7 out of possible 5-star rating. They come highly recommended as one of the best brands and models of a spark plugs.

  • Reduced gap wear
  • Quicker firing
  • Improved fuel economy

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8. ACDelco 41-993 Professional Iridium Spark Plug

Best Spark Plugs of 2017 | Buying Guide41E9oQcteL

Professional Iridium spark plugs for quality aftermarket replacement. The high melting point of iridium for exceptional strength and long wear.

Iridium offers better engine idle stability and smoother performance. Iridium allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration.


ACDelco is a name that is highly trusted by loyal users. These plugs are from the latest technology that makes them impervious to radio frequencies that can interfere with the operation of some newer vehicles.

Suppressor seals help to prevent internal combustion leaks for greater acceleration power and smoother performance. They get a 4.6 out of 5 from satisfied users who highly recommend them to others. The major issue of this is that associated with this plug is that they can be broken easily when adjusting the gap. Care and the proper gapping tools are recommended to avoid this.

  • Improved ignition and carbon deposit burn
  • Quicker starts and acceleration
  • Better engine idles with smooth performance
  • Improved mpg

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7. Denso (4504) PK20TT Platinum TT Spark Plug

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The Denso is a great plug for enhancing fuel economy. The construction features twin tip technology with platinum on the center and ground electrodes. Conductivity is improved through the use of insulators of purified aluminum powder for a high performing and durable spark plug.


These spark plugs deliver high on affordability, performance, and durability. More power thanks to the improvements made in conductivity and they’re durable.

The only real issue is that some of them will need to be fine-tuned to the right gap spacing. Most users didn’t find this to be much of an issue. This plug gets a rating of 4.6 out of 5 for performance, improved MPG and long life.

  • Quick starts
  • Durability
  • Improved conductivity

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6.Bosch (4501) FGR8DQI Platinum IR Fusion Spark Plug

Best Spark Plugs of 2017 | Buying Guide31siZsBbVoL

Spark plug technology at it’s finest. the Bosch Platinum Ir Fusion is packed with features for enhanced performance and longevity.


The Bosch Platinum IR Fusion Spark Plugs have some definite benefits. They are constructed to last a long time and reduce the incidences of fouling.

Gap wear is reduced, so you do get a more consistent and powerful spark. You must take extra care to ensure that you get the right fit for your vehicle.

You cannot change to adjust the gap on these plugs which is a downer for some users, and not everyone who used them had the best experience concerning performance. These were, however; a minority and the Bosch gets a 4.4 out of 5 rating with most users giving them a thumbs up and placing them on the recommended best spark plug list.

  • Reduced gap wear for powerful spark
  • Quicker starts
  • enhanced mpg
  • Longer performance

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5.NGK (5464) BKR5EIX-11 Iridium IX Spark Plug

Best Spark Plugs of 2017 | Buying Guide31fAfUgipmL

Made from Iridium for longer life and resistance to corrosion, heat and electrical wear. Unique anti-seizing features for easier installation and removal for replacement.


The NGK Iridium comes packed with features that increase the overall quality by offering high performance and long life. Faster starts and high power for acceleration and a smooth ride. Resistant to corrosion and wear that has made it a popular choice ranking a 4.7 out of 5 rating from users. Be careful to get the right plug for your vehicle as this type does not work well for all makes and models.

  • Quick engine start
  • Improved acceleration and smooth operation
  • Longer lasting

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4. Champion 3401 (3401) Platinum Power Spark Plug

Best Spark Plugs of 2017 | Buying Guide31fAfUgipmL-1

Delivery of robust performance with the Champion 3401 Platinum Power spark plug.


The Champion 3401 achieved a perfect score of 5.0 out of a possible 5. Users give it a thumbs up for excellent performance and durability. The price is moderate, and it enhances the operation of the vehicle with the total elimination of misfires. Highly recommended as one of the best spark plugs on the market.

  • Smoother vehicle operation
  • Eliminates misfires
  • Reasonably priced

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3. ACDelco 14 Professional RAPIDFIRE Spark Plug

Best Spark Plugs of 2017 | Buying Guide31UZt2B3wXcL

Compatible with most vehicles, the RAPIDFIRE is an excellent choice for everyday use. The copper core gives this plug wear resistance for longer durability.


The ACDelco 14 Professional RAPIDFIRE is an excellent choice for anyone that is looking for a standard spark plug without all of the bells and whistles. Copper core gives them good conductibility; they are reasonably priced, and they have a solid reputation for good performance. Users provide them with a far above average rating of 4.6 out of 5 which lands them firmly among the top picks.

  • Decreased misfire
  • Longer durability
  • Smooth operation
  • Affordably priced

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2. Denso (3297) SK20R11 Iridium Spark Plug

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Unique iridium feature is hard and vigorous for an elimination of electrode wear and increased durability over platinum. These spark plugs hold up well under hard driving conditions with extended long life feature.


The Denso Iridium gets an overwhelming rating of 4.8 out of 5 for user satisfaction with performance and durability. The gap may need minor adjustment as they come with factory settings which are not precise for all vehicles. Overall, this pick gets a thumbs up as one of the best spark plugs on the market.

  • Long lasting spark plugs
  • Enhance vehicle performance
  • Quicker starts and good acceleration

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1.Autolite APP5224 Double Platinum Spark Plug

Best Spark Plugs of 2017 | Buying Guide31uCR3G4tiL

These plugs have platinum to platinum firing feature to eliminate gap erosion for longer high-quality performance.


The Autolite Double Platinum gets a 4.1 out of 5. It offers exceptional durability and long life with a five-year guarantee. Overall, they’re a good quality spark plug, but there are a few concerns when it comes to construction and using them on the right vehicle type. Recommended as an excellent choice for DIS engines.

  • Fewer misfires
  • Increased durability
  • Good choice for DIS engines

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Final Thoughts

Here you have a comprehensive list of the five best spark plugs as recommended by people who used and rated these products. If you are looking for the best possible new way to improve the performance of your vehicle, the spark plugs are the right good place to start.

This guide is intended to give help you to understand the importance of your spark plugs and the differences in the types and brands that are available. While some plugs are more standard in design, others have enhanced features that are made with the latest technology.

Not all spark plugs have been created equally. This is not to say that one brand is superior over another. Choosing the right spark plugs are as much a matter of preference as finding the best quality in design and construction.

Knowing how they work and which materials can affect their performance gives you an edge on the search for the most suitable product for your vehicle. When you know what you’re looking for, it is easier to make the best selection for the optimum results.

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