BMW 135is Spark Plug Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(310)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(310)

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a BMW 135is Spark Plug Replacement is $382 with $172 for parts and $210 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2013 BMW 135isL6-3.0L TurboService typeSpark Plug ReplacementEstimate$577.38Shop/Dealer Price$673.05 - $938.80
Show example BMW 135is Spark Plug Replacement prices

What are spark plugs and how do they work?

Spark plugs are one of the key components of your vehicle’s ignition system. They ignite gasoline and air inside of your engine. This gives your engine the power to propel you down the road. The spark plug takes high voltage electricity from the ignition coil and creates a spark at just right moment during the engine’s combustion cycle. This gives the engine the best mix of power, fuel economy and low emissions. However, the electrode at the end of the spark plug eventually wears out and can cause performance issues.

Spark plugs-MATROX-1

When should you replace spark plugs?

Replacement should follow the vehicle maintenance schedule. This will be listed in the vehicle’s owner’s manual. Some cars require regular replacement at 30k, 60k or 100k miles. It is possible in some cases that a spark plug might fail before the service schedule, but it’s not typically common.

Avoiding spark plug replacement can cause:

  • Difficulty starting your car.
  • Check engine light for a misfire code.
  • Flashing check engine light during acceleration for misfire, this can cause engine damage.
  • Reduced fuel economy and/or power.
  • Rough idle and/or unexplained engine vibration.
  • Failed State emission testing.

Even if only one spark plug is found to be faulty, they should always be replaced in sets. Most engines will require 4,6, or 8 spark plugs.

How do mechanics replace spark plugs?

Spark plugs are threaded into the engine’s cylinder head(s). Most cars have one plug per cylinder, so a four-cylinder engine will have four plugs, a six-cylinder engine will have six plugs, and so forth. The mechanic will:

  • Have the correct spark plugs on hand for your vehicle
  • Pull any diagnostic trouble codes that may be related to worn spark plugs.
  • Remove the original spark plugs and look at removed spark plugs for any clues indicating engine mis-operation exists; such as oil burning, excessively rich mixture, pre-ignition damage etc. Inform owner of any found unusual conditions.
  • Install new plugs using a torque wrench.
  • Finally, a road test of the vehicle to confirm normal operation.

Is it safe to drive with worn spark plugs?

Yes, but spark plugs that are worn enough to cause engine-misfiring have the potential to cause engine damage and overheating of the catalytic converter. Regardless of the age of the plugs, or mileage, if the engine misfires or runs poorly, the plugs should be inspected for defects. Generally, spark plug failure will not keep the engine from running, but in cases of extreme wear, you may experience a limitation in the speed at which you can drive the car. If the maintenance schedule says the plugs should be replaced, it is best to do so promptly.

When having spark plugs replaced keep in mind:

  • High-speed driving may accelerate spark plug wear. Consider earlier than required inspection and tune-up if you operate the car in severe conditions.
  • Plugs should always be promptly replaced per the manufacturer maintenance schedule even if they appear to be working perfectly.
  • If your vehicle is equipped with spark plug wires (as opposed to a coil-on-plug system), the wires should be replaced at the same time. This may increase the cost of your repair.
  • It is possible that when doing a spark plug replacement, your vehicle may also need additional parts like ignition coils, this will add to the repair cost.
  • Some engines require that the intake manifold be removed while replacing spark plugs. This may increase the parts and labor cost for the repair.
  • Leaking valve cover gaskets, which have let oil get in contact with the spark plugs, coils or wires, may be the cause of ignition system issues. Valve cover gaskets will need to be replaced in addition to the spark plugs, wires or coils. This will add to the repair cost.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(310)

Rating Summary
298
4
1
1
6
298
4
1
1
6

Anderson

28 years of experience
94 reviews
Anderson
28 years of experience
BMW M6 Gran Coupe V8-4.4L Turbo - Spark Plug Replacement - Saint Albans, New York
Very knowledgeable and great personality

Kevin

18 years of experience
88 reviews
Kevin
18 years of experience
BMW 320i xDrive L4-2.0L Turbo - Spark Plugs - Trenton, New Jersey
I thought Kevin was very professional, knowledgeable, and trustworthy. He did a great job and I will definitely recommend his services. Thank you Kevin.

John

33 years of experience
1126 reviews
John
33 years of experience
BMW 645Ci V8-4.4L - Spark Plugs - Hitchcock, Texas
This guy knows his stuff. Prompt and courteous and got the jib done in a timely fashion.

Albert

16 years of experience
46 reviews
Albert
16 years of experience
BMW 328i L6-3.0L - Spark Plugs - Diamond Bar, California
Best mechanic in Southern California

Excellent Rating

(310)

Rating Summary
298
4
1
1
6
298
4
1
1
6
Number of BMW Spark Plug Replacement services completed
3410+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1200+
experts on our platform

Recent articles & questions

How to Choose the Best Car Shipping Company
Getting Getting an automobile across a long distance can seem difficult to arrange since you only have a few options to choose from, including driving the vehicle yourself or having someone drive it for you. But a third option that...
How to Bundle Your Car Insurance and Homeowners Insurance
Home and auto insurance quotes are often cheaper if bundled together into one policy. Bundled insurance policies are less costly and easier to manage.
Understanding Ford Intelligent Oil-Life Monitor (IOLM) System and Lights
Car symbols, or dashboard lights, are a car service reminder. The Ford Intelligent Oil-Life Monitor indicates when and what service your car needs.

Convertible rear window detached & crashed inside the back seat

Hello. If you want to submit a complaint about this then you would need to send it to Chrysler of North America (http://www.fcanorthamerica.com/Pages/Home.aspx). You can call any dealer to get their number and mailing address. More than likely you will...

Reving

When the car is in gear, the load on the engine is sufficient to prevent the malfunction. If the engine idle speed on your vehicle is controlled by an idle control valve (ICV), that ICV valve can fail or a...

I had my airbags replaced on my 2012 scion xb and instantly lost 61 miles per gas tank. Why?

When the airbags were replaced the battery would have been disconnected and may cause the computer to reset and can cause some loss of fuel mileage until the computer gets through relearn. If you still get lower fuel mileage after...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com