logo

BMW 440i 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.

See availability

Customer Ratings

(310)

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a BMW 440i Spark Plug Replacement is $425 with $159 for parts and $266 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2018 BMW 440iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$613.10Shop/Dealer Price$699.59 - $943.67
2020 BMW 440iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$702.18Shop/Dealer Price$811.86 - $1133.08
2019 BMW 440iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$702.18Shop/Dealer Price$811.91 - $1133.16
2017 BMW 440iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$610.58Shop/Dealer Price$693.95 - $935.68
Show example BMW 440i 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

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
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

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

Luis

10 years of experience
140 reviews
Request Luis
Luis
10 years of experience
Request Luis
by Junior
BMW M5 V10-5.0L - Spark Plugs - New City, New York
Luis was a wonderful person that was very knowledgeable and friendly. He did an amazing job servicing the vehicle even when the car itself was a pain, he didn't lose courage and he kept on working and even finding new and creative ways to get the job done when the car didn't want to cooperate. I really like the fact that he was willing to teach me about the car and have knowledge on howt to fix things. I would recommend him him to anyone and would definitely work with him again.

Jonathan

36 years of experience
522 reviews
Request Jonathan
Jonathan
36 years of experience
Request Jonathan
by Ari
BMW 740iL V8-4.4L - Spark Plugs - Tampa, Florida
Jonathan was very knowledgeable and professional. He arrived on time, instantly diagnosed the problem and quickly fixed it

H

27 years of experience
828 reviews
Request H
H
27 years of experience
Request H
by vikas
BMW 325i L6-3.0L - Spark Plugs - Sunnyvale, California
My bmw 325i failed the smog check and there was a engine cylinder 4 misfire. Honorio did an excellent job of fixing both spark plug and coil and immediately huge difference in the engine idling,no vibrations.. He also gave me v good advice to run car for atleast 100 miles as smog detection would not get faulty old code. I had a nice relaxing afternoon sitting by pool and thank Honorio for fixing the car. Total cost $350.00

Miguel

36 years of experience
258 reviews
Request Miguel
Miguel
36 years of experience
Request Miguel
by Kendra
BMW 328i L6-3.0L - Spark Plugs - Jacksonville, Florida
On time and efficient!

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
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

Recent articles & questions

A Kid's Guide to Mechanics and Engineering
Learning Learning about mechanics involves studying the motion of objects as well as the times when objects are not moving. Sir Isaac Newton was the first scientist who explored mechanics, and this subject became the foundation of physics. Studying mechanics...
Read more
P0353 OBD-II Trouble Code: Ignition Coil C Primary/Secondary Circuit Malfunction
P0353 means a malfunction has been found specifically in ignition coil C. Problems may include broken connector locks and loose connection at coil.
Read more
A Buyer's Guide to the 2012 Volkswagen Tiguan
If If you’re in the market for a concept SUV, you’ve probably noticed a few more options sprouting up every year. However, the 2012 Volkswagen Tiguan should still make the decision a relatively easy one. Key Features Being compact means...
Read more

2013 Hyundai Azera immobilizer indicator came on and now my car won't start.

Hello. You may just need to get a new key for the vehicle. If the computer is no longer recognizing the key then this will occur. I would first have the vehicles battery load tested. If the battery is failing...
Read more

Car won't start

Without seeing the extent of the damages it would be hard to figure out the part that is damaged. I suspect the steering column ignition switch got damaged.
Read more

is it too late to get undercoating for a week old 2017 Toyota Prius

No it is never too late to get the car undercoated unless your car is already rusted out. You may need to have the under car washed of any dirt or salts that may have got on the undercarriage.
Read more
  1. Home
  2. Estimates
  3. BMW
  4. 440i
  5. Spark Plug Replacement

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 (844) 997-3624 · hi@yourmechanic.com

Read FAQ
GET A QUOTE