Informational Guide

How Many Spark Plugs In A V6?

In this guide, we answer how many spark plugs are in a V6 engine for many different vehicles.

Your vehicle’s spark plugs are responsible for creating the tiny explosion that ignites the air/fuel mixture in the engine’s combustion chamber. Only gas-powered cars have spark plugs. If you are planning to perform an automotive tune-up, you want to know how many spark plugs are in a V6 engine?  

In this article, we discuss various cars, such as how many spark plugs are in a V6 Mustang, and we answer how many spark plugs in a V6?

The gas-powered V6 engine contains six cylinders found in the engine block. It tends to use less fuel than the V8 and is cheaper to manufacture but still provides plenty of performance.

The twin-spark engine may also have six cylinders, but it contains two spark plugs per cylinder. This design improves performance because there is never a lag when waiting for ignition, but the configuration can often be more complicated. 

With that said, the twin spark engine does create a cleaner burn and can consume less fuel. Some enthusiasts also think it provides a smoother ride. Still, replacing double the amount of spark plugs can dramatically increase your tune-up cost, so the benefits and disadvantages must be weighed.  

How do you know what type of engine you have and how many spark plugs are in a V6? To answer this, you want to reference your vehicle owner’s manual. It will provide you with the engine specifications so you can get the right amount of spark plugs.  

6 cylinder Alfa Romeo engine

How Many Spark Plugs Does A V6 Engine Have?

How many spark plugs are in a V6 Dodge Charger, or what about how many spark plugs are in a V6 Chrysler 300? The answer to this varies on the type of V6 that is found under the hood. When you look at how many spark plugs are in a V6 Camaro vs. how many spark plugs are in a V6 Charger, you see that most American-made brands use six spark plugs. 

So, if you want to know how many spark plugs are in a V6 Chevy Impala, how many spark plugs are in a V6 Dodge Challenger, or how many spark plugs are in a V6 Ford Taurus, the answer is six.

Additionally, Alfa Romeo and Mercedes-Benz are the only two manufacturers that use twin spark in a V6 engine. Therefore, these are the only brands where you will find 12 spark plugs in a V6 engine. However, some Chrysler engines were made by Mercedes-Benz, so that can get tricky. 

Still, the answer to how many spark plugs are in a V6 Honda Accord, how many spark plugs are in a V6 Jeep Grand Cherokee and how many spark plugs are in a V6 Toyota Camry, the answer remains the same. You will find six spark plugs in these engines. Here’s a handy illustration to help you reference your car model.  

Vehicle With 6 Cylinder Engine

Number of Spark Plugs

V6 Dodge Charger


V6 Chrysler 300


V6 Camaro


V6 Chevy Impala


V6 Dodge Challenger


V6 Ford Taurus


V6 Honda Accord


V6 Jeep Grand Cherokee


V6 Mustang


V6 Toyota Camry


How Do You Check The Spark Plugs In A V6 Engine?

Start by figuring out how many spark plugs your vehicle has. You want to be sure that you check all of them as some might experience more wear than the others. Once you have some basic tools on hand, you can follow these directions to check and change the spark plugs. 

  1. 1
    Pop open the hood and disconnect the negative battery terminal.  
  2. 2
    Remove the engine cover. 
  3. 3
    Count the wires that are connected to the engine if your vehicle is equipped with them. These spark plug wires will be red or black. Otherwise, you can find the spark plugs based on where the ignition coils are.  
  4. 4
    With your socket, remove one spark plug at a time for inspection. Then, make sure you put it back or replace it with a new one before moving to the next plug. 
  5. 5
    Evaluate the end of the spark plug. You should check its condition and evaluate the gap with a spark plug gap gauge 

If you need to replace the spark plug, follow the next set of instructions.  

mechanic showing a used spark plug

How To Replace The Spark Plugs In A V6? 

For most cars, you should be able to get between 30,000 and 120,000 miles out of the spark plugs, depending on what they are made from. The average cost to change six spark plugs is between $18 and $150 for the parts. If you follow these directions, you can save on the labor costs by doing it yourself. 

  1. 1
    Find the spark plug under the wire or ignition coil.  
  2. 2
    Remove the boot and ignition coil. 
  3. 3
    Remove the spark plugs one at a time.  
  4. 4
    Make sure the gap of the new spark plug is correct. Even if they are pre-gapped, these adjustments can change during shipment to the auto parts store. 
  5. 5
    Once the new plug is in place, torqued to factory specifications, put the ignition coil and boot back on top. You should consider putting new coil boots on at this time.  
  6. 6
    Take the vehicle for a test drive to make sure it performs as expected.  

People Also Ask (FAQs)

How many ignition coils does a V6 have? 

There is one ignition coil for every cylinder. In the gas-powered V6 engine with six spark plugs, you will also find six ignition coils. However, the twin spark engine may have one or two ignition coils per cylinder for a total of six or 12.  

How do you know when spark plugs need changing? 

You should change the spark plugs during the regularly scheduled tune up. However, if you are noticing poor performance or misfiring, it’s time to check the health of your car’s spark plugs.  

How much does a spark plug for a V6 engine cost? 

Each spark plug can cost anywhere from $3 to $25, leading to a total cost of $18 to $150 for a set of six. If you purchase better spark plugs, you might pay more upfront, but they will last longer, making them a better value in many cases.  

Do spark plugs increase horsepower of V6 engines? 

While the spark plugs won’t necessarily increase the horsepower of the engine, new plugs could help it perform better. By replacing worn-out or fouled spark plugs, the engine will run as intended, making a noticeable difference in performance.  


Now that you know how many spark plugs are in a V6 engine, it’s time to perform a tune-up. With new spark plugs, you can keep your V6 engine running the way it was intended.