When to replace spark plugs?

[dfernandez]

I own a 2008 Sentra SL. While reviewing the maintenance manual, I noticed it never mentions replacing spark plugs. Should I still do it annually like my other cars?

[b-13det]

annually like your other cars sounds good, or you can do it every 25-30k miles

[Buzzman]

Should I still do it annually like my other cars?

Annually? In this day and age? I changed my plugs in my Pathfinder for the first time, after 5 years and 150,000 Kms. (about 90,000 miles).I still have my OEM plugs in my '03 Sentra (115,000 Kms.), and my '06 Altima (55,000 Kms.).Don't waste your money changing them out every year. The practice of changing plugs annually dates back to the "old" days, before electronic ignition, fuel injection and unleaded gas. Same goes for the "tune-up". People still fall for that pre-winter scam too.