BMW 318i 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

(21)

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

(21)

Spark Plug Replacement Estimate for BMW 318i

BMW 318i Spark Plug Replacement costs $137 on average.

CarServiceEstimateShop/Dealer Price
1996 BMW 318iL4-1.9LService typeSpark Plug ReplacementEstimate$177.91Shop/Dealer Price$224.39 - $308.71
1984 BMW 318iL4-1.8LService typeSpark Plug ReplacementEstimate$186.23Shop/Dealer Price$234.52 - $330.50
1991 BMW 318iL4-1.8LService typeSpark Plug ReplacementEstimate$167.91Shop/Dealer Price$211.62 - $293.86
1995 BMW 318iL4-1.8LService typeSpark Plug ReplacementEstimate$167.91Shop/Dealer Price$211.58 - $293.79
1998 BMW 318iL4-1.9LService typeSpark Plug ReplacementEstimate$167.91Shop/Dealer Price$211.65 - $293.91
1992 BMW 318iL4-1.8LService typeSpark Plug ReplacementEstimate$167.91Shop/Dealer Price$211.62 - $293.86
1994 BMW 318iL4-1.8LService typeSpark Plug ReplacementEstimate$172.91Shop/Dealer Price$216.38 - $298.44
1997 BMW 318iL4-1.9LService typeSpark Plug ReplacementEstimate$172.91Shop/Dealer Price$217.04 - $299.58
Show example BMW 318i Spark Plug Replacement prices

Spark Plug Replacement Service

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

(21)

Rating Summary
20
0
1
0
0
20
0
1
0
0

Dallas

29 years of experience
84 reviews
Dallas
29 years of experience
BMW 318i L4-1.8L - Alternator Belt - Baltimore, Maryland
He showed up early, he has a pleasant attitude and is knowledgeable of the automotive mechanics

Matthew

33 years of experience
1120 reviews
Matthew
33 years of experience
BMW 318i L4-1.9L - Brake Light Bulb Replacement (Passenger Side) - Williamsburg, Virginia
Matthew was very professional on time and did a nice job.

Donald

40 years of experience
124 reviews
Donald
40 years of experience
BMW 318i L4-1.9L - Check Engine Light is on - Roswell, Georgia
Good job, quick and professional

Tom

42 years of experience
205 reviews
Tom
42 years of experience
BMW 318i L4-1.8L - Brake safety Inspection - Cupertino, California
Tom is awesome.

Excellent Rating

(21)

Rating Summary
20
0
1
0
0
20
0
1
0
0
Number of BMW 318i services completed
231+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
experts on our platform

Recent articles & questions

P0383 OBD-II Trouble Code: Glow Plug Control Module Control Circuit Low
Trouble code P0383 means the PCM has detected a low voltage reading of the glow plug heater circuit.
How to Replace a Car Air Conditioning (AC) Low Pressure Hose
Car air conditioning (AC) low pressure hoses carry refrigerant back into the compressor to keep providing cold air in a closed loop system.
P0872 OBD-II Trouble Code: Transmission Fluid Pressure Sensor/Switch C Circuit Low
P0872 means the transmission fluid pressure is at a problematic level, likely due to a leak, defective pressure pump, or faulty transmission or PCM.

I installed a boss 302 manifold on my 13 mustang gt 5.0 and the bolt in the middle pasenger side craked but the other bolts are in.

Hi there. The bolt that cracked the manifold will not cause the cylinder 1 to misfire. The misfire is caused by a faulty spark plug, a faulty spark plug wire, a faulty fuel injector, or a burned valve. Check the...

when i use emergency brake only one side locks up.

Hello. If the parking brake is only working on one side then you more than likely have an issue with the caliper on the non-functioning side. I usually start by checking the function of the caliper. I remove the wheel...

Where could I find a TSB for my 2005 mustang GT regarding my Throttle body or Throttle Position Sensor?

I went through all the technical bulletins and recalls and did not find anything for reprogramming your computer or repairs to the TPS or throttle body. The ones that you are not finding may not be the right ones. I...

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