BMW 640i Spark Plug Replacement at your home or office.

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Spark Plug Replacement Estimate for BMW 640i

BMW 640i Spark Plug Replacement costs $115 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$114 to $128
Labor: $98 -$112
Parts: $16
Average Dealer price
$163
Average Shop price
$137
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
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CarServiceEstimateShop/Dealer Price
2012 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$174.67 - $226.01
2017 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$159.52 - $199.50
2013 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$174.73 - $226.12
2015 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$174.78 - $226.21
2014 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$174.70 - $226.06
2016 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$174.66 - $225.99
Show example BMW 640i Spark Plug Replacement prices

Spark Plug Replacement Service & Cost

What are the Spark Plugs all about?

The spark plugs are an important part of the ignition system. When you turn the ignition key (car's key) on, it causes the ignition coil to generate the spark which ignites the air-fuel mixture in the engine cylinders to start the engine. The number of spark plugs in the car is the same as the number of cylinders, although some vehicle manufacturers will use two spark plugs per cylinder.

Over time, the spark plugs wear out and require replacement. When the spark plugs wear out, it is harder for it the air-fuel mixture to ignite, resulting in engine misfires. If one of the spark plugs has failed, the car will still start and run, but it will run poorly. On some vehicles, spark plug replacement may be labor intensive and involve removal of the intake plenum.

Spark plugs-MATROX-1

Keep in mind:

  • When the spark plugs are replaced, it is a good idea to inspect the ignition cables as well.
  • Spark plugs come in numerous ratings, and the correct rating for your vehicle should always be used.

How it's done:

  • Scan the car for codes.
  • Clean all surface areas around the spark plugs.
  • Remove spark plugs.
  • Inspect threads in engine head (where plugs are installed).
  • Perform compression test if needed.
  • Inspect ignition wires.
  • Apply anti-seize to the threads of the spark plugs.
  • Install new spark plugs.
  • If needed replace any gaskets removed.

Our recommendation:

During routine maintenance and checkups, your ignition system should always be inspected. Any time that a component of the ignition system is replaced, it’s a good idea to consider replacing the spark plugs as well. If you don’t preemptively change your spark plugs your engine will let you know by misfiring or running poorly, so schedule an inspection as soon as you notice that your engine is not performing properly.

What common symptoms indicate you may need to replace the Spark Plugs?

  • Check Engine light is on.
  • Engine misfires.
  • Poor fuel economy.
  • Vibration coming from the engine.

How important is this service?

Spark plugs are responsible for igniting the fuel that your engine uses to run. When you turn your key, a small voltage of power is sent to the ignition coil, where it is transformed into high voltage currency. This high voltage currency is sent through the ignition cables to the spark plugs. The spark plugs use the power to create a spark, which ignites the fuel, and allows the engine to function.

When the spark plugs malfunction, this spark won’t be created, and the fuel will not be ignited as it should. Your vehicle has many spark plugs, so depending on how many fail, your engine may either run poorly, or not run at all. Continuing to drive a vehicle with malfunctioning spark plugs can also cause damage to the catalytic converter.

Fast and easy Spark Plug Replacement service at your home or office.

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Excellent Rating


BMW Repair

Average Rating

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Number of Reviews

2,498

Rating Summary
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Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Tien

19 years of experience
623 reviews
Tien
19 years of experience
Tien is great and helpful. Gives me advice on how to maintain the car in good shape.
2006 BMW 325I - SPARK PLUGS - CASTRO VALLEY, CALIFORNIA

Honorio

15 years of experience
563 reviews
Honorio
15 years of experience
He is on my side. He treats my car as his. He also has the right instrument to a an excellent job. Most place just change the plugs but he fine tune the timing with his $7,000 instrument and make the car run smooth and quiet. He also point out the mistake I have and advice me the right way todo things.
2001 BMW 325I - SPARK PLUGS - MOUNTAIN VIEW, CALIFORNIA

Jason

5 years of experience
108 reviews
Jason
5 years of experience
This young man is awesome and professional! For sure I will use him to work on my cars!
2008 BMW 335I - SPARK PLUG REPLACEMENT - SAN MATEO, CALIFORNIA

Tomas

9 years of experience
91 reviews
Tomas
9 years of experience
Quick and efficient service.
2007 BMW 328I - SPARK PLUG REPLACEMENT - WEST ORANGE, NEW JERSEY
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceEstimateShop/Dealer Price
2012 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$174.67 - $226.01
2017 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$159.52 - $199.50
2013 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$174.73 - $226.12
2015 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$174.78 - $226.21
2014 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$174.70 - $226.06
2016 BMW 640iL6-3.0L TurboService typeSpark Plug ReplacementEstimate$130.88Shop/Dealer Price$174.66 - $225.99
Show example BMW 640i Spark Plug Replacement prices

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