Spark Plug Replacement Estimate for BMW 645Ci

BMW 645Ci Spark Plug Replacement costs $139 on average. Following is a breakdown of the labor and parts estimates.

Skip the repair shop - our mechanics come to you
YourMechanic Price
$138 to $156
Labor: $126 -$144
Parts: $12
Average Dealer price
$192
Average Shop price
$165
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
2005 BMW 645CiV8-4.4LService typeSpark Plug ReplacementYourMechanic Price$138.95Shop/Dealer Price$187.93 - $231.94
2004 BMW 645CiV8-4.4LService typeSpark Plug ReplacementYourMechanic Price$138.71Shop/Dealer Price$187.84 - $231.84
Show example BMW 645Ci Spark Plug Replacement prices
i
Have a car question? Get free advice from our top-rated mechanics.

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
Chris ahead of time to my work and waited for me. He worked fast. He is very pleasant and answered all my questions. He gave me some recommendations as well. I will certainly use this service and Chris for future services.
2005 BMW X5 - SPARK PLUG REPLACEMENT
Want Chris's expert advice? Ask your question now. Its free!
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
Want Honorio's expert advice? Ask your question now. Its free!
283 reviews
Patrick
27 years of experience
He seems professional. I paid for the lights to be addressed and they are all still on including a low engine oil light. He said he would return to check it out further after his next appointment but I did not hear back from him. I was told by BMW that the power steering fluid needs to be drained, flushed and refilled. He sucked it out with a hose twice and this will not ensure that the oil that was accidentally placed in there would be completely removed. I am no mechanic but I am going off of what BMW told me. I wanted to get a lot more work done. I want all the lights to be addressed and fixed so I started with the check engine lights to be looked at and not just reset. I want everything to be fixed. Thank you
2005 BMW 645CI - OIL CHANGE
Want Patrick's expert advice? Ask your question now. Its free!
178 reviews
Chris
11 years of experience
For the better part of a month, I’d been panicking over my 2002 BMW 330ci, which had basically lost all power, so it was just sitting in my garage. Towing it to a shop for diagnostic testing was an option, but then I’d be stuck in the event projected repair costs exceeded the car’s worth (or even half of its worth). Being stuck sucks, so I decided on exercising another option. After reading a bunch of reviews and doing some research on Your Mechanic and their team of mechanics, I decided on giving them a try. I am so glad that I did. What an outfit! Great concept, great execution ... The people in the office are wonderful at keeping you informed, answering questions, from beginning to end. Their online presence and transparency dismisses any weirdness customers may feel about the whole inviting strangers over thing, too. And Your Mechanic delivers, by connecting top-tier mechanics with people who need their help. That’s exactly what Your Mechanic did for me, by introducing me to Chris M. He came to my rescue. What a pleasant polite young gentleman, Chris is. And Boy oh boy!, does he know his stuff! With patient professional confidence and calm, Chris ably diagnosed my car’s problems, tested the hypothesis, and retested too. The problems weren’t easy to find or common whatsoever. Thanks to diligence and expertise, however, Chris M. identified the issues. It wasn’t piston rings or the catalytic converter, as I’d feared, but a faulty engine coil. Chris explained the issue, actually showed me what was going on in the engine compartment, provided me with a detailed quote that I knew was fair and reasonable (talk about a mind Blow!), and then he even offered to come back and do the work, if I wanted. Heck Yes! Chris came back the very same day to render the fixes, all from inside of my garage. No tow trucks, no queue of customers waiting, no worries about surprisingly huge repair bills, and no concern about strangers coming over, or anxiety about non-OEM parts. I have a brand new engine coil, new spark plugs, a clean gas line, clean oil – and a renewed confidence in my automobile’s reliability. Presto! My car runs like a charm. Chris M. earned my confidence, my trust, and my respect – and that’s an amazing feat. Having a qualified, knowledgeable professional come to my home, diagnose my car’s troubles, and even render repairs on site, using manufacturer-recommended parts, sounds like a luxury I couldn’t afford. Turns out I was wrong. No doubt, from here on out, I will be recommending Chris M. and Your Mechanic to anyone and everyone.
2002 BMW 330CI - SPARK PLUG REPLACEMENT
Want Chris's expert advice? Ask your question now. Its free!

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.

Spark Plug Replacement Estimates for Popular BMW Models