Audi A8 Spark Plug Replacement Costs

Car	Service	Estimate	Shop/Dealer Price
1998 Audi A8V8-3.7L	Service typeSpark Plug Replacement	Estimate$317.77	Shop/Dealer Price$380.34 - $508.99
1999 Audi A8V8-3.7L	Service typeSpark Plug Replacement	Estimate$287.77	Shop/Dealer Price$350.39 - $479.07
1997 Audi A8V8-3.7L	Service typeSpark Plug Replacement	Estimate$287.77	Shop/Dealer Price$350.38 - $479.06

Car

Service

Estimate

Shop/Dealer Price

1998 Audi A8V8-3.7L

Service typeSpark Plug Replacement

Estimate$317.77

Shop/Dealer Price$380.34 - $508.99

1999 Audi A8V8-3.7L

Service typeSpark Plug Replacement

Estimate$287.77

Shop/Dealer Price$350.39 - $479.07

1997 Audi A8V8-3.7L

Service typeSpark Plug Replacement

Estimate$287.77

Shop/Dealer Price$350.38 - $479.06

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.

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.

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AL

12 years of experience

234 reviews

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by Jesus

Audi S7 V8-4.0L Turbo - Spark Plugs - Denver, Colorado

Al was extremely friendly and knows exactly what he is doing. Gave me a few pointers to keep an eye on to keep the car running healthy Thank you again!

Pardeep

21 years of experience

1068 reviews

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by Joseph

Audi A6 Quattro V6-2.8L - Spark Plugs - San Jose, California

Pardeeps phoned me that he was picking up parts and would be on site in 30 minutes. At once I knew that he knew his business. He explained what he was going to do, than got right to it. He covered all that was required and finished in good time. We went over the checklist and he explained what I should do to keep up the service. He is a real professional. He is welcome to service my vehicle in the future.

Luis

15 years of experience

175 reviews

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by Samaura

Audi A4 L4-2.0L Turbo - Spark Plugs - Las Vegas, Nevada

My fuel pump, fuel filter, and spark plugs were changed out. He let me know I bought the wrong vacuum pump, probably only bc it was a different figment than the correct one. 1 day after the Mx, my engine started shaking and the car felt like it was being driven over lumps of coal with the emergency brake applied. When I called YM to talk to them about it, I was informed that I would have to pay for another inspection since I provided my own parts. Nevermind the fact that it may have had nothing to do with the parts, but possibly just with the maintenance itself. I took my car to Midas and was informed by that I had had the wrong spark plugs put in, and that caused a crack in 3 out of 4 of my ignition coils-a problem that did not exist prior to the maintenance done by Luis. That was my fault for buying my own parts (which saved me a $75% markup from YM’s parts) although most websites said that those plugs fit my car. If that was the case, though, a 13 year mechanic should have been able to let me know that that was the wrong part just like he did with the vacuum pump instead of placing them in my car. So I’m shelling out another $300 to have yet another set of spark plugs and ignition coils replaced. Thanks YM. I’m not as upset at Luis as I am YM, bc I feel if I could have talked to Luis about this instead of being stonewalled by the company, I would have had a better outcome and a better understanding of what went wrong.

Rick

47 years of experience

43 reviews

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by Dennis

Audi A6 Quattro V6-2.7L Turbo - Spark Plugs - Arvada, Colorado

Fantastic as always!!

Audi A8 Spark Plug Replacement at your home or office.

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Spark Plug Replacement Service

How much does a Spark Plug Replacement cost?

On average, the cost for a Audi A8 Spark Plug Replacement is $215 with $73 for parts and $142 for labor. Prices may vary depending on your location.

What are spark plugs and how do they work?

When should you replace spark plugs?

How do mechanics replace spark plugs?

Is it safe to drive with worn spark plugs?

When having spark plugs replaced keep in mind:

Meet some of our expert Audi mechanics

Excellent Rating

Rating Summary

AL

Pardeep

Luis

Rick

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