Spark plugs

[KARNUT]

I’ve owned my 2011 Genesis since new. I followed the extreme service schedule do to the length of the warranty period. My question how long have people gone on plugs. That service is pretty costly.

 

[EdP]

I’ve owned my 2011 Genesis since new. I followed the extreme service schedule do to the length of the warranty period. My question how long have people gone on plugs. That service is pretty costly.

Most I went on any car was 120,000 miles. They tend to last longer with highway driving over short trip city in cold weather.

 

[mtrot]

I changed my plugs at around 110,000 miles. When I removed the old plugs, they really looked okay. I went ahead and changed the plugs, but I could tell no difference at all in how it performed.