When you see the ‘check engine light on in your Hyundai Sonata, you know it is time to change the spark plugs, the tiniest and most crucial component of your automobile. For your convenience, we have compiled the best spark plugs for Hyundai Sonata. We understand how important it is for you to choose the right spark plugs for your car. Getting confused and lost is common, so we wish to help you out. We hope our list will assist you in making the right decision.
Our Top Picks
- Best For Quick Ignition: Genuine Hyundai spark plug
- Best For Longer Life: Autolite Iridium XP spark plug
- Best For High Performance: NGK Iridium IX Spark Plug
- Best For The Budget: FLIBEN spark plug
- Best Overall: Automotiveapple spark plug
Brand-wise Spark Plugs for Hyundai Sonata Cost Chart
| Serial | Manufacturer | Brand Name | Set of | Average Cost |
| 1 | 182348868312 | Automotiveapple | 4 | $46-$50 |
| 2 | Hyundai | Genuine Hyundai Spark Plugs | 4 | $40-$45 |
| 3 | FRAM | Autolite | 4 | $26-$30 |
| 4 | NGK | NGK Iridium IX Spark Plug | 4 | $31-$35 |
| 5 | SRKJ | FLIBEN | 4 | $36-$40 |
How Do I Choose the Best Spark Plugs for Hyundai Sonata?
Hyundai Sonata’s manufacturers conduct extensive research and tests to ensure the car’s best performance. However, they do recommend periodically changing some parts to maintain consistent performance. Before selecting new types of spark plugs there are several factors to consider:
- How long will they last with the additional load and heat created by the engine?
- Would the plugs be able to eliminate heat effectively created by the engine?
- How well do they perform in terms of ‘piston-to-plug’ clearance?
- Is it possible for them to ignite the entire air or fuel mixture for a quick start?
If all the questions are answered positively then you know it is the best spark plug for Hyundai Sonata.
When to Change Spark Plugs on Hyundai Sonata?
Spark plugs are one example of those parts. When it comes to your engine’s performance and health, spark plugs can tell a lot. They help your engine to work efficiently. But if you encounter-
- trouble starting the engine,
- frequent misfiring,
- slow acceleration,
- increased exhaust emissions,
- wastage of fuel,
- spark plug gaps are widening,
- unsmooth idling of engine, and
- The engine check light just lightened up.
More so, if you have traveled more than 95,000 miles- it is time to replace the spark plugs in your Hyundai Sonata’s engine.
5 Best Spark Plugs for Hyundai Sonata
Every product is represented as the best. As a result, users get confused about which to purchase. Here, we have sorted spark plugs according to top features, budgets, reviews, and expert opinions. To save up your time we have listed out one of the 5 best spark plugs for Hyundai Sonata on the market.
1. Best Overall: Automotiveapple spark plug
Top Features:
- OEM product
- Improve performance
- Quick acceleration
- Affordable
- Four set pack
- Improve the look of your interior
Automotiveapple is a Korean well-reputed spark plug brand. They are known for their quality. If you are a fan of ‘do-it-yourself’ stuff then these plugs are perfect for you.
They are fit for your Hyundai Sonata YF LF & Kia K5 automobile. These come in a four-pack set. Automotiveapple producers use chrome fender molding technology to provide the most excellent experience you can expect from your spark plugs.
By looking at them you can tell that they are made with care. These plugs give your engine a quick and cold start. They are budget-friendly. If you want to try a new type of spark plug, Automotiveapple plugs are absolutely worth trying.
| Pros | Cons |
| Easy to install Perfect fit Well-finished product | Mixed reviews |
2. Best For Quick Ignition: Genuine Hyundai spark plug
Top Features:
- OEM products
- Smooth engine idling
- Reduce emissions
- Resistant to misfiring
- Durable
As a Hyundai Sonata owner, you can try the originally manufactured spark plugs. They prevent frequent misfiring. Provide your engine a smooth idling when in a traffic jam or in a parking lot looking for space.
Genuine Hyundai spark plugs offer your engine rapid acceleration and durability. They are fit for almost all types of vehicles. Expert manufacturers of these spark plugs have made them in such a way that they can reduce gas emissions.
The plugs are a comparatively bit pricey but they provide the expected service from your engine. They do not wear out easily. They are pre-gapped, so you do not have to worry while installing them.
| Pros | Cons |
| Pre-gapped Satisfying performance Durable | A bit costly |
3. Best For Longer Life: Autolite Iridium XP spark plug
Top Features:
- Longer life span
- Rapid spark ignition
- Save fuel economy
- Improve overall performance
- Platinum alloy
Autolite is an American brand that built Iridium XP spark plugs. They are more focused on enhancing the ignition capability, therefore, spark plugs from Autolite offer quicker and better ignition.
Iridium is one of the precious metals that is six times harder and eight times stronger. This metal has a high capability to work under extreme heat. As a result, Autolite iridium core spark plugs have a longer life span.
These spark plugs have a V-trimmed platinum sidewire technology resistor. They put platinum alloy which is 0.6 mm wide. They are proven to improve the overall performance of your automobile. They also save your fuel economy.
| Pros | Cons |
| Reasonable priced Durable Quick starting | Have mix opinions |
4. Best For High Performance: NGK Iridium IX Spark Plug
Top Features:
- Iridium centre electrode
- High resistance
- Work under the worst conditions
- Provide good torque
- Gasket seat style
NGK is a Japanese brand. Their spark plugs belong to the top-notch class. They have had the least number of failing records till now. These spark plugs are designed to offer maximum ignition to the combustion chamber.
The finest iridium electrode assists the plugin in working under extreme conditions. Because of iridium they also last longer. NGK’s technology made it the master of misfire resistance. They provide a good amount of torque. Their plugs have a projected insulator.
The Iridium IX spark plugs from NGK decreased the usage of voltage. One of the disadvantages of NGK spark plugs is that they are expensive. However, we can assure you that their quality will beat the price.
| Pros | Cons |
| Excellent performance Longevity Save fuel | Expensive |
5. Best For The Budget: FLIBEN spark plug
Top Features:
- OEM product
- Revamp interior
- Boost engine’s performance
- One year warranty
- Fit for Hyundai vehicles
Spark plugs for the Hyundai Sonata are made by FLIBEN. One of the trusted spark plugs for your automobile. After installing them you can notice an improvement in the interior of your engine.
They are designed to last longer and offer reliable performance. They run cooler. Effective to handle the extra heat generated by the engine. These plugs are budget-friendly.
Spark plugs for the Hyundai Sonata give mild engine idle. They are good at creating quick sparks. They reduce gas emissions. They are known for offering the highest gas mileage.
| Pros | Cons |
| Easy to install budget-friendly reliable performance | Not pre-gapped |
How Many Miles After Should I Change Spark Plugs in the Hyundai Sonata?
Experts suggest it is best to replace the plugs in the Hyundai Sonata every 95,000 miles. They should not exceed 120,000 miles. Besides, they also advise checking fuel hoses, connections, fuel lines, fuel tank air filters, and brake fluid every 30,000 miles.
How Do You Change Spark Plugs in a Hyundai Sonata?
Changing the spark plugs in a Hyundai Sonata is not rocket science. We have laid out the 1o steps for you. Follow the step by steps to complete your job easily.
You will require the following items:
- Suitable spark plugs for your engine,
- spark plug socket,
- 3/ 8’’ extension,
- and ratchet wrench.
Replacement process:
Step 1: Open the hood. Clean the area near your ignition coil and spark plugs.
Step 2: Unplug your negative battery terminal. Changing the spark plugs includes working with the electrical system, therefore, it is safe to detach your negative battery.
Step 3: Take off the engine cover. It is secured in place by up to four 10mm bolts accessible from the engine’s top.
Step 4: Disconnect the ignition coils. To do this you have to unplug the ignition coil connector by pressing the lock tab. Then, pull the connector away.
Step 5: Hyundai Sonata uses the ‘coil-on-plug system. So, there is one coil in each spark plug. Use a 10mm socket to loosen up the ignition coils. Pull the coils out after the bolt and connection have been removed. If you face a problem with pulling up the ignition coil- try to twist it a little, then raise it up again. You should not put extra force while pulling off the coils.
Step 6: After removing the coils, detach the spark plugs. Before that, you should root out the dirt from your spark plug recess. Use a 3/ 8’’ extension and a ratchet wrench to remove the spark plugs. You have to rotate the ratchet counterclockwise. Also, you may require a magnetic pickup tool to pull out the spark plugs.
Step 7: Install the new spark plugs. In this case, you have to assess whether your plugs are pre-gapped or not. Most of the spark plugs come pre-gapped except the Copper plugs. If not gapped then you may need to measure the gaps by using spark plug gapping tools.
Step 8: Attach the ratchet wrench to the 3/ 8’’ extension and rotate it clockwise to tighten up the new spark plugs. Double-check to be assured that they are all set.
Step 9: Reinstall the ignition coils and connector. Put down the engine cover then the engine’s bonnet.
Step 10: Start the engine to see whether it starts smoothly or not. If there is no unusual noise coming from your engine, you have completed the replacement successfully.
Precautions:
- Your engine must remain off and cold.
- Do not put excessive pressure while pulling out things from your engine.
- Remain extra careful working with the ratchet wrench.
Conclusion
We hope that we’ve been able to help you find the best spark plugs for your Hyundai Sonata. If you don’t see what you need here, check out our list of other brands and models at Amazon, eBay, and Other online stores, they have a wide variety of different products available.
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