Owner reviews for spark plug

Some of those markups are insane. I can get NGK laser iridium plugs for less than $70.

At 85k I swapped to NGK Iridium Ix plugs on my 2019 civic with the 2.0na and I swear it added at least 20% response. Makes me wish I would have gotten it with a manual cause it would be so much more fun to drive around town. Also got a few more MPG

I just replaced all 4 spark plugs on my car @ 114k miles. Now I’m so glad I did it because the car feels way more peppy and responsive.

I got champion copper core for my 5.7 hemi which was what the factory had in it. I changed them at 68k and they probably could have gone another 68k they looked virtually new.Ran like a champ and I got them with rebates and at the end of the day they were 1.00 each.

I have a N55, e93 And went through the same back and forth between NGK and Bosch. My car is 100% stock. Ordered ZR5TPP33 Spark Plug - Bosch and the car runs just fine.

My F15 had the Bosch ZR5TPP33-S from the factory. I replaced with ZR5TPP33 when doing the valve cover about 20K miles ago, and no problems so far.

I'm running NGK Iridium NGK LTR71X-II 1 step colder but I am tuned. Been running these sparkplugs since the car had 5000 km. I have 45000 km now in 8 years and a half and I have changed 3 sets as it is recommended to change them a bit sooner than 30000 km on a tuned car.

It\u2019s true that you dont\u2019 get quite as good performance as with the Bosch, but this is my second set of autolites and I\u2018m over 200k miles already.

definitely not ok, they are spent, also Denso>NgK any day of the week

I had plugs from Amazon ngk and I had a wicked misfire couple days after. Somehow the ceramic broke off.