5 Best Spark Plugs For Mercedes Benz: Which One Should You Get?

Mercedes is a luxury automobile company that many people have grown to love. They produce high-quality vehicles that are recognized for their design and performance, both on the road and off of it. With Mercedes, you can’t go wrong!

There are a few parts in a car that need to be replaced every so often, including spark plugs. We’ll talk about the 5 best Mercedes spark plugs and how to replace the spark plugs. One for each type of vehicle you might own, from sports cars to sedans – and discuss which of them we think is the best!

Why Do I Need a Spark Plug?

Spark plugs surely are a crucial part of the engine that helps to create a spark.

These small but integral components can last up to 100,000 miles if they are changed regularly and replaced with high-quality parts like those listed below.

Regular replacement ensures maximum performance from your vehicle, so it’s worth doing for several reasons. It will help your engine function better and give you more engine power to improve fuel economy. Also, spark plugs will make for a smoother ride, even when the weather is bad or in case you need to tow anything heavy behind.

Our Top Picked 5 Best Spark Plugs For Mercedes

1. Bosch YR7MPP33

2. Bosch 7424-10PK

3. NGK 7090 G-Power

4. NGK (7913) SILFR6A

5. NGK Iridium IX Spark Plug LFR7AIX (2309)

1. Bosch YR7MPP33 Best Budget Platinum Spark Plug for Mercedes

Bosch YR7MPP33 Double Platinum Spark Plug for Mercedes

The lowest price Bosch Platinum YR43MPP33 is designed with the highest quality platinum, iridium, and rhodium materials. These double platinum plugs also have a seal tight gas barrier coating which provides an anti-corrosion surface for accurate voltage conduction. The ground electrode design of this spark plug delivers an improved ignition system without compromising its durability or service life.

This double platinum spark plug is very durable as compared to standard spark plugs. It has a very low level of radio interference and also emits less noise when compared with other kinds of spark plugs. It has a long service life.

Read: Bosch vs NGK vs Denso Spark Plugs: Comparison Guide

Technical specification and Pros:

  • Vehicle manufacturer: BOSCH.
  • Applicable models: Mercedes Benz (C CL CLK E G GL GLK ML R S SL SLK (50 230 250 280 300 350 400 450 550).
  • High-quality material.
  • Improved ignitability.
  • Less radio interference and less noise emission than other spark plugs.
  • Optimal fuel economy, gas mileage performance, and long service life.


  • Based on customer reviews, we didn’t find any cons.

2. Bosch 7424-10PK Best Platinum Spark Plug for Mercedes

Bosch 7424-10PK Platinum Spark Plug for Mercedes Benz

The Bosch 7424-PK is a platinum spark plug with double the life of traditional OEM plugs. It’s made in Germany and features wider Zenon gas-filled firing chambers. It’s one of the best spark plugs for Mercedes sedans with precious metal platinum.

This double platinum Bosch 7424-PK has a heat range of 11/32 inches and will give you great fuel economy, performance, and longevity compared to your regular plug.

Technical specification and Pros:

  • This spark plug fits Mercedes W140 S-Class (S320) models, among others.
  • It features a heat range of 11/32 inch torque and produces great spark energy with the Mercedes M104 engine.
  • The spark plugs are made in Germany and have Zenon gas filled firing chambers for better performance, fuel economy, and longevity.
  • Great quality product, longer life than traditional spark plugs.


  • A bit expensive spark plugs.

3. NGK 7090 G-Power Platinum Spark Plugs

NGK 7090 G-Power Platinum Spark Plugs

This is a platinum version of spark plugs made by NGK, one of the most respected names in car components.

These Platinum OEM spark plugs have a great heat range with thermal conductivity. Especially for Mercedes E300 models and other M104 engines Made in Germany. Spark plugs NGK Resistor included to prevent radio interference and pre-gapped with a high quality gap. Prevents RFI/EMI good resistor value, thus quality product from one of the most respected names in the business.

Also read: Difference Between Champion vs Ngk Spark Plugs

Technical specification and Pros:

  • The G-Power Platinum spark plugs NGK are pre-gapped and come with a resistor to prevent radio interference. 
  • This spark plugs NGK has an excellent heat range (14/32 inch torque) that will give you better fuel economy.
  • Improve performance and longevity.


  • Slightly more expensive than regular spark plugs, but not much. It’s still a great value for your money compared to other best spark plugs on the market that will give you similar results.

4. NGK (7913) SILFR6A Spark Plug for Mercedes

NGK (7913) SILFR6A Spark Plug for Mercedes

The NGK SILFR for Mercedes is a great choice and one of the higher quality spark plugs. These are copper spark plugs made of nickel alloy and have a four-electrode design. This version of spark plugs also features an extremely durable coating that helps to keep out corrosion, dirt, debris, etc.

The NGK SILFR6A spark plugs for Mercedes performs well in all conditions because it was designed with the engine application in mind. Drivers can use this spark plug on many different makes and models of Mercedes, including SLK 200 Kompressor, C 220 CDI, and CL 500.

Technical specification and Pros:

  • Four-electrode design.
  • Durable coating to protect against corrosion, debris, and other contaminants.
  • High quality spark plugs that last long; perform well in all conditions.
  • Better fuel economy.
  • Several Mercedes models use these types of copper plugs.


  • A bit more expensive than some other options like Champion copper plugs.

5. NGK Iridium IX Spark Plug LFR7AIX (2309)

NGK Iridium IX Spark Plug LFR7AIX (2309)

The NGK iridium spark plugs for Mercedes have an extremely durable coating that helps to keep out corrosion, dirt, debris, etc.

Drivers can use these iridium plugs on many different makes and models of Mercedes, including SLK 200 Kompressor, C 220 CDI, and CL 500.

Iridium spark plugs are made of nickel alloy copper core with an iridium tip that provides the longest life possible, even when used in extreme conditions.

Technical specification and Pros:

  • Iridium plugs have nickel alloy fused copper core construction.
  • Longest lasting design; has universal application.
  • Iridium plugs are High quality spark plugs; very durable.


  • Iridium spark plugs are an expensive option for some drivers.

Features Need to be Considered Before Buying Spark Plugs for Mercedes

A white Mercedes car parked on the road


Unlike bad spark plugs, high-quality spark plugs will ensure the longest life possible for your Mercedes, even in extreme conditions. Choose the one without poor fuel economy and performance. Remember to have a look at our other blog posts on Things You Need To Consider Before Buying A New Set Of Spark Plugs!


Best spark plugs for Mercedes are available in many different materials. So be certain to check out the specifics of each one before making a choice. We will write more about this later!


Make sure you use the right dimension specifications when choosing a new set of spark plugs for your Mercedes. If you need help to figure out which ones you need, we can answer any questions you may have!


There are many quality spark plugs for your Mercedes. Be sure to compare prices before selecting, so you don’t overpay for the right spark plugs you want. Check out our other blog posts on this topic as well!

Style And Color

Not all Mercedes spark plugs are the same! For example, Be sure to check out our other blog posts on style and color as well.

Types of Spark Plugs

There are several types of spark plugs, including:

  • Iridium tip spark plugs
  • Nickel alloy spark plugs with a copper core
  • Four-electrode design spark plugs
These different options serve various purposes and can be used on different makes and models of Mercedes.

Car owners should replace the spark plugs with high-quality parts like those listed above to ensure long life and maximum performance for your vehicle.

FAQs of Spark Plugs For Mercedes

How often should I Change The Spark Plugs in Mercedes Benz?

When to replace the spark plugs in Mercedes is one of the most frequently asked questions. The frequency of getting new spark plugs on most engines will depend on various factors, such as how often you drive your car and what kind of gasoline you use.

Because they can degrade by time or mileage if they don’t work properly, changing the spark plugs in Mercedes Benz is one of the most important services you should regularly have done.

NB: However, give your car extra attention and double check the plugs when your Check Engine light starts blinking, and you have trouble starting the car or have cold starts.

How to Change a Spark Plug in Mercedes Benz?

First, to change spark plugs, you need to open the bonnet of your Mercedes and then remove a side cowl. After that, release the spark plug wires using a wrench on a special hook. If you find the engine cold, it is essential not to turn over any part of your hand and tighten anything yet!

When you replace the spark plugs, try to hold the plug with a bent hook. After removing old plugs, put new spark plugs in place and tighten them using hands and the wrench to prevent damaging spark plug wires.

You must have some idea about how tight bolts should be. You can damage the internal parts of your engine if it’s too tight—so better use torque-wrench.

After all these steps, you can connect the spark plug wires back to the new spark plugs, and now your engine is ready to work again!

You can also watch this video about how to change a spark plug in Mercedes Benz:

NB: Making changes on colder plugs can only cause it to foul out, whereas running hotter plugs with more heat can cause severe engine damage. Better to check the owner's manual and if you need any special tools.

What Brand Spark Plugs does Mercedes Use?

Mercedes uses Bosch spark plugs since the mid-1960s. The goal of these long-lasting, high-quality spark plugs is to optimize engine performance while reducing gas mileage, high fuel consumption, and emissions.

Mercedes Benz is one of many brands that use Bosch’s Platinum+ line for their vehicle’s spark plugs. Bosch’s Platinum+ line includes a platinum resistor center electrode that helps maximize performance while being extremely durable.

These new spark plugs are available for both diesel and gasoline engines of all types from Mercedes, including the


-E-Class Sedan/Wagon

-CLS-class sedans & wagons


-C300 sedan / C400 sport coupe & convertible models, as well as a variety of other models.

How much do Spark Plugs Cost for a Mercedes Benz?

Mercedes Benz spark plugs are not the cheapest car parts to replace. Depending on the spark plug type and how many plugs are there in your vehicle’s engine (some have more than two spark plugs). However, they can cost anywhere from $60 to upwards of $300 dollars per plug.

How long do Mercedes Benz Spark Plugs Last?

This question has no exact answer. However, we can provide an estimated lifespan based on our experiences with other vehicles.

Mercedes Benz recommends that you change the worn spark plugs every two years or 50,000 miles. If you drive in heavy stop-and-go traffic frequently, this may wear out your Mercedes Benz spark plugs more quickly. Heavy & rough idle for long periods can also negatively impact how much life your spark plugs have.


As your Mercedes is a luxury vehicle, it needs to be maintained as a luxury one. By choosing the best spark plugs for your Mercedes and taking care of these new plugs properly, you will ensure that they last longer and provide optimal performance in all types of conditions.

Follow our advice and buy good quality parts like Bosch Platinum+ spark plugs to provide the best experience for you and your Mercedes.

We hope that was helpful! If you by chance have any other questions, feel free to leave them in the comments below.

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