BMW 430i Spark Plug Replacement Costs

Estimate price near me

Service Location

Customer Ratings

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.

See availability

Customer Ratings

Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a BMW 430i Spark Plug Replacement is $246 with $106 for parts and $140 for labor. Prices may vary depending on your location.

Car	Service	Estimate	Shop/Dealer Price
2019 BMW 430iL4-2.0L Turbo	Service typeSpark Plug Replacement	Estimate$515.70	Shop/Dealer Price$591.90 - $808.35
2020 BMW 430iL4-2.0L Turbo	Service typeSpark Plug Replacement	Estimate$502.19	Shop/Dealer Price$575.74 - $790.20
2021 BMW 430iL4-2.0L Turbo	Service typeSpark Plug Replacement	Estimate$429.19	Shop/Dealer Price$501.85 - $715.64
2018 BMW 430iL4-2.0L Turbo	Service typeSpark Plug Replacement	Estimate$475.18	Shop/Dealer Price$531.63 - $693.43
2017 BMW 430iL4-2.0L Turbo	Service typeSpark Plug Replacement	Estimate$445.98	Shop/Dealer Price$504.41 - $667.71

Show example BMW 430i 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

(6)

Rating Summary

6

0

0

0

0

6

0

0

0

0

SEE REVIEWS NEAR ME

Ben

13 years of experience

1 reviews

Ben

13 years of experience

by MARUTHI

BMW 430i L4-2.0L Turbo - Pre-purchase Car Inspection - Claremont, North Carolina

Great service

Rodney

37 years of experience

611 reviews

Rodney

37 years of experience

by Ryan

BMW 430i L4-2.0L Turbo - Coolant Hose - Sacramento, California

Rodney is just a life saver and one hell of a mechanic if you have bmw he is magic with it and yet will try to save you money and time for labor to get the job done rite he don’t shortcut nothing very good at what he does it would be a mistake to take your car anywhere to have it worked on. All I can say is thank you Rodney for your service and the smile

Matthew

34 years of experience

1438 reviews

Request Matthew

Matthew

34 years of experience

Request Matthew

by Sheila

BMW 430i L4-2.0L Turbo - Oil Change - Norfolk, Virginia

Excellent service! Matt was so friendly and kind. Thank you for helping me take care of my car. So easy and so fast.

Chris

23 years of experience

2372 reviews

Chris

23 years of experience

by Monica

BMW 430i L4-2.0L Turbo - Oil Change - Lake Elsinore, California

Great job! Quick and very knowledgeable.

Excellent Rating

(6)

Rating Summary

6

0

0

0

0

6

0

0

0

0

SEE REVIEWS NEAR ME

Recent articles & questions

How to Clean Your Car Tires

When When your car’s wheels are clean, it does more than just enhance your car’s looks. It also protects your tires from weathering and cracking and removes corrosion and protects your wheel’s finish from the elements. Keeping your wheels clean...

10 Best Stores to Buy Auto Parts in Dayton, Ohio

Automotive technicians rely on auto parts stores to add and replace car parts. The best auto parts shop in Dayton, Ohio is AutoZone.

A Buyer’s Guide to the 2012 Jeep Grand Cherokee

Though Though the Jeep Grand Cherokee is not a new model, it got a complete redesign in 2011, and the 2012 Jeep Grand Cherokee saw even more improvements. While other SUV manufacturers have sat on their laurels, Jeep has done...

How Do Daytime Running Lights Work?

Basically, daytime running lights, or (DRL) (https://www.yourmechanic.com/article/what-are-daytime-running-lights) as they may be listed, are your vehicle's low beam headlights that are on during daytime driving. By having them on they increase the visibility of your vehicle on the highway, much like...

Minor skip when accelerating -1985 Chevrolet C10 Pickup

Hello, thanks for writing in. This sounds like an exhaust valve was adjusted too tight after the rebuild, causing combustion to leak past the exhaust valve into the exhaust itself. For an in-person diagnosis, a certified technician from YourMechanic can...

Weak stream of fluid from windshield sprayers

Hello, thank you for writing in. With the work you have already done, there are only a few other options for this system to fail. One of which is the electrical connections at the motor. If these are dirty 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