Spark Plug Replacement Estimate for BMW 645Ci

BMW 645Ci Spark Plug Replacement costs $138 on average. Following is a breakdown of the labor and parts estimates.

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YourMechanic Price
$137 to $155
Labor: $126 -$144
Parts: $11
Average Dealer price
$190
Average Shop price
$164
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CarServiceYourMechanic PriceShop/Dealer Price
2005 BMW 645CiV8-4.4LService typeSpark Plug ReplacementYourMechanic Price$137.91Shop/Dealer Price$186.63 - $229.87
2004 BMW 645CiV8-4.4LService typeSpark Plug ReplacementYourMechanic Price$137.69Shop/Dealer Price$186.57 - $229.81
Show example BMW 645Ci Spark Plug Replacement prices

Parts required for a BMW 645Ci Spark Plug Replacement

Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

445 reviews
Chris
17 years of experience
A+ mechanic. My 2011 BMW 535i required a special extra thin spark plug socket so Chris couldn't swap out the spark plugs for me on the first visit. So he rescheduled me for a different day so he could order the special sockets needed to work on my car. He is very knowledgeable and got the plugs installed in a timely fashion for the second visit. Would definitely recommend him!
2011 BMW 535I - SPARK PLUG REPLACEMENT
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341 reviews
Honorio
14 years of experience
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
2006 BMW 325I - SPARK PLUG REPLACEMENT
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283 reviews
Patrick
27 years of experience
Patrick is a great guy and really knows his stuff. Yourmechanic.com rips you a new one on parts and labor but i guess you pay for not having the headache. I paid 370 labor for 3 hours and 255 for parts that go for 65 bucks on parksgeek.com and even cheaper on a few other sites but for original bmw parts it is 65 and they charged 255. Fyi. If it can wait a couple days, buy the parts first
2005 BMW 645CI - CAMSHAFT POSITION SENSOR REPLACEMENT
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178 reviews
Chris
11 years of experience
Thanks again! Arrived early that was great and efficient.
1987 BMW 325ES - SPARK PLUG REPLACEMENT
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All about Spark Plug Replacement

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.

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