BMW 325i 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

(19)

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

(19)

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a BMW 325i Spark Plug Replacement is $184 with $44 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1991 BMW 325iL6-2.5LService typeSpark Plug ReplacementEstimate$242.12Shop/Dealer Price$270.20 - $340.27
2005 BMW 325iL6-2.5LService typeSpark Plug ReplacementEstimate$451.87Shop/Dealer Price$521.56 - $721.25
2006 BMW 325iL6-3.0LService typeSpark Plug ReplacementEstimate$432.27Shop/Dealer Price$493.79 - $668.12
1995 BMW 325iL6-2.5LService typeSpark Plug ReplacementEstimate$277.87Shop/Dealer Price$314.09 - $415.44
1993 BMW 325iL6-2.5LService typeSpark Plug ReplacementEstimate$276.91Shop/Dealer Price$306.27 - $377.29
1992 BMW 325iL6-2.5LService typeSpark Plug ReplacementEstimate$233.11Shop/Dealer Price$258.39 - $326.35
1994 BMW 325iL6-2.5LService typeSpark Plug ReplacementEstimate$277.87Shop/Dealer Price$314.12 - $415.49
2003 BMW 325iL6-2.5LService typeSpark Plug ReplacementEstimate$451.87Shop/Dealer Price$521.61 - $721.34
Show example BMW 325i 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

(19)

Rating Summary
18
0
1
0
0
18
0
1
0
0

Chris

8 years of experience
361 reviews
Chris
8 years of experience
325i 2006 - Spark Plugs - San Diego, CA
Mr. Aquino told me I purchased the wrong coils and therefore couldn't complete the original work I needed. He also found several gasket leaks which he recommended I fix before installing the correct coils at a later time. I followed up by completing further research and was shocked when I discovered the coils I purchased were, in fact, the correct coils.

Alejandro

10 years of experience
21 reviews
Alejandro
10 years of experience
325i 2004 - Oil/Fluid Leak - Los Angeles, CA
Excellent mechanic

Alejandro

10 years of experience
21 reviews
Alejandro
10 years of experience
325i 2004 - Smog Check Service - Los Angeles, CA
Excellent mechanic

Christopher

20 years of experience
29 reviews
Christopher
20 years of experience
325i 2006 - Starter - Alpharetta, GA
Chris came out and replaced a starter on a BMW. He was very professional and explained all the work that needed to be done. Definitely would recommend.

Excellent Rating

(19)

Rating Summary
18
0
1
0
0
18
0
1
0
0
Number of BMW 325i Spark Plug Replacement services completed
209+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1200+
experts on our platform

Recent articles & questions

P0223 OBD-II Trouble Code: Throttle/pedal position switch/sensor B circuit high output
P0223 P0223 code definition Throttle/Pedal Position Sensor/Switch B Circuit High Input What the P0222 code means The P0222 code is an indication that the Engine Control Module (ECM) has detected voltage from the throttle position sensor to have exceeded the...
The Traveler’s Guide to Driving in Korea
Korea Korea is an interesting country with a strong culture and a fascinating history. There are many different places (https://www.tripadvisor.com/Attractions-g294196-Activities-South_Korea.html) that you may want to visit including the War Memorial of Korea and Gyeongbogung Palace, both of which are in...
A Buyer’s Guide to the 2012 Subaru Tribeca
This This 7-passenger SUV may have trouble keeping its head above water in the sea of competition, but its standard AWD, clean exterior lines and style-forward cockpit design make it an attractive choice in an increasingly crowded segment. Aside from...

AC is not working

Your air conditioning not working is most likely due to the refrigerant in the system being low. Over time the refrigerant will slowly leak out. You won't be able to notice it because it is a gas. You will only...

Hissing noise.

This may be a sign of a vacuum leak. High idle speed, stalling and hissing sounds are common signs of a vacuum leak. When a vacuum leak is present in an engine, this causes an excessive imbalance in the air/fuel...

Engine start to tremble when pressing gas. One time the engine light started flashing.

Hi Stephan. Thanks for taking time to contact us today in regards to your Nissan Altima's issues. Anytime the engine or warning light illuminates, it's due to an error code being created by one of the multiple fuel, ignition or...

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