Owner reviews for spark plug

I went with Denso's on my 1.8T because that is what I had on the shelf. but I have ran anything and everything in vehicles over the years, and found that there is not much different between the different types.

Next day guy at the auto parts store tells me to try ngk iridium’s and it works automatically. If you’re planning to replace your spark plugs save your self the time and money and buy ngks over anything.

I replaced the spark plugs, ignition coil plugs, alternator and checked the tensioner.

As always, go with NGK or Denso plugs.

My car was fitted with Denso Power when new, 11 years ago. It has done 63K Miles (101K Km, way more than the data sheets above say) and the economy continues to improve

I replaced the plugs again (from Brisk to NGK R7437-9) and rotated the coil packs to try and resolve the misfire issue. I also re-flashed both the ECU and TCU tunes, and the cold start misfire issue appears to be fixed.

AC Delco double platinum spark plugs belong in that engine.

Stock Ford ones were $9 a piece at my local dealer…

definitely avoid Bosch spark plugs. I'm not personally a fan and I've seen plenty fail. Unless they were original in the motor (usually Subarus don't use Bosch), I'd stick with NGK or Denso in my opinion.

In many places you cannot just go to a Toyota dealer because some dealerships have partnerships and force you to go to the Lexus dealer. My Toyota dealer services my Lexus vehicles. I referred a friend and they refused because of a new bs policy created by corporate( most likely service manager). They grandfathered my vehicles and said I cannot take any new Lexus to them. I was pissed and went to Lexus and was quoted more than double for oil change compared to Toyota. I got my spark plugs done on my gs350 for 399 at Toyota and Lexus was going to charge me 1000! I complained at Lexus and they said they could do it for 600. I told them off and went to Toyota. Now I am pissed at Lexus and Toyota for implementing this practice when all Lexus parts come in a bloody Toyota box with Toyota part numbers. Shame on Toyota for refusing to work on a Lexus and shame on Lexus for charging outrageous prices compared to Toyota for the exact same service with exact same parts. The extra 600 dollars for spark plugs at Lexus is criminal!