Reviews of NGK spark plug

I bought a NGK №6 4-pack for 20$ at local parts shop, After the replacement, engine problems began: loss of power, misfires, and severe vibration.

I replaced all spark plugs with Genuine Audi NGK plugs and replaced all Ignition Coils as well.

I’m lucky if I get a full 5k miles out of a set of ER10S before one of them shits out and I get a misfire.

After changing: Idles better and more consistent at 700~800 rpm range. Car drives smoother? Changing spark plugs made it visibly better.

NGKs are my go to’s

I've run Denso and NGK on E85 for 10k+ miles and numerous track days, with zero issues.

Holy shit - $75 spark plugs? I think my Honda plugs cost like $5 a pop for NGK iridium

Also, you should probably go with NGK spark plugs because if you put Bosch ones that are made in China/Russia you are going to have a baaaad time

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