Get Hours and Directions

Close

165 Commerce Dr, Fairfield, CT, 06825

Get Directions  Map depicting surroundiing area of Mercedes-Benz of Fairfield

Dealership Info

Phone Numbers:Sales Hours:
  • Mon - Thu9:00 AM - 7:00 PM
  • Fri9:00 AM - 6:00 PM
  • Sat9:00 AM - 5:00 PM
  • SunClosed
Service Hours:
  • Mon - Fri7:30 AM - 5:30 PM
  • Sat8:00 AM - 3:00 PM
  • SunClosed
Parts Hours:
  • Mon - Fri7:30 AM - 5:30 PM
  • Sat8:00 AM - 3:00 PM
  • SunClosed
Service

How Often to Change Your Spark Plugs

Spark Plug in Front of Black Background

Our service team is asked a lot of questions about routine maintenance. One of the most common is, “When do I change spark plugs?” Whether you own a new or used vehicle, it’s good practice to change them every 30,000 miles — but that distance could vary for your vehicle based on your driving habits. To be certain, it’s always advisable to read your owner’s manual and to talk to certified professionals like the technicians at our service center. For a few quick facts about how often to change spark plugs, read on!



When Do Spark Plugs Need to Be Replaced?

Your car’s ignition can’t operate as intended without working spark plugs. What do spark plugs do, exactly? They carry the ignition coil’s high-voltage current to the combustion chamber, causing it to ignite when you start your car. If the spark plugs are malfunctioning or dead, you’ll notice some warning signs, such as:

  • Engine misfire
  • Engine runs roughly
  • Poor acceleration
  • Decreased fuel-efficiency
  • Slow engine start or startup failure
  • Rough engine idling

What Are the Benefits of Changing Your Spark Plugs?

Changing your spark plugs regularly will help prevent the issues listed above, as well as boost fuel economy, reduce emissions, and more. Here are a few good reasons to ensure your car’s spark plugs are always operating at their best:

  • Greater Fuel Economy – You may not realize it, but a malfunctioning spark plug can cut your car’s fuel-efficiency down by 30% on Westport roads. You won’t reclaim that percentage until you change the bad spark plug.
  • Decreased Emissions – Bad spark plugs not only affect fuel economy, but they also impact the environment. Changing your spark plugs means your car will produce fewer harmful emissions.
  • Smoother Engine Operation – Changing your spark plugs can immediately resolve issues like engine misfiring and rough idling.
  • Seamless Combustion System – If your car’s spark plugs are working as they should, it’s likely the combustion system is also in good shape.

Remember, spark plug replacement is just one item on your Mercedes-Benz service schedule. Find out what could happen if you forget to schedule Mercedes-Benz oil replacement, or reach out to our team to learn more about recommended service.

Let Mercedes-Benz of Fairfield Change Your Spark Plugs!

Now that you know the answer to the question, “When do I change my spark plugs,” Mercedes-Benz of Fairfield can help you get on track with Mercedes-Benz maintenance. Schedule a service appointment at our service department near Norwalk and Weston. Before you schedule, take a moment to browse our latest service specials and parts specials!

Hoping to learn more about DIY car care? Start by finding out how to change a tire at home.

More from Mercedes-Benz of Fairfield

  • 2021 Mercedes-Benz GLC Price List

    If you’re on the market for a luxury SUV, Mercedes-Benz has some of the best options in Fairfield–and one of the most popular is the Mercedes-Benz GLC. This best-seller comes as an SUV and as a Coupe, but the options don’t stop there.

  • 2021 Mercedes-Benz GLE Configurations

    Whether you’re considering the SUV or the Coupe, you’ll have a wide range of 2021 Mercedes-Benz GLE configurations to consider. Even the base-level Mercedes-Benz GLE 350 runs roughshod over most competitors, and drivers who decide to upgrade can rest assured that they’re approaching the pinnacle of the mid-size luxury SUV segment. Mercedes-Benz GLE Inventory Contact Us…

  • 2021 Mercedes-Benz GLC Towing Capacity

    The 2021 Mercedes-Benz GLC 300 towing capacity tops out at 3,500 pounds, and that upper limit holds true across the lineup. If you need this kind of capability for your Westport and Norwalk adventures, just remember to add the optional Class II trailer hitch to your chosen trim level. Doing so will also net you…

Contact Us

877-557-5298

Call Now

165 Commerce Dr • Fairfield, CT 06825

Get Directions

Today's Hours:

Open Today! Sales: 9am-7pm

Open Today! Service: 7:30am-5:30pm

Open Today! Parts: 7:30am-5:30pm

Mercedes-Benz of Fairfield 41.1666432, -73.2262337.