Reviews of Bosch spark plug

I don't use spark plugs like that unless the vehicle specifically specs for them. We used to put Bosch W7DTC's in these, or at a minimum, just the single electrode version.

changed out the spark plugs, all except for cyl 1 had crazy looking plugs. Used Bosch platinum 6704 cleared up the CEL and also the stability and TC lights no longer flash so somehow that was connected I guess.

I’ve had almost all of them destroy themselves recently.

A few months ago i had a intermittent misfire appear and went to investigate it but when I popped the hood while it was running, the wire on cyl 3 was literally popping and sucking itself in and out with the spark plug core still on. I took the plug out and the ceramic was moving in and out from the threaded bit. So it was gapping and slamming itself together while running.

I changed the one spark plug cause I had a spare ngk, I forgot about changing the rest and now I have a new misfire….. I can now feel the tick from combustion going thru the wires on cyl 1 and 4. So now 2 spark plugs are starting to do the same thing. I will be changing to ngk plugs now and won’t be touching Bosch.

For iridium spark plug. Do NOT gap them. I have bosch double iridium spark plugs and over 120K miles now. Still goes strong.

My car has Bosch Double Iridium spark plugs. Over 120K miles now still go strong.

I just got Bosch ones for my 2gr in the Lexus. Worked well, no complaints. And they weren’t badly priced

I believe BOSCH were the OEM for the spark plugs on these. I went with Copper/Nickel plugs the the originals were Platinum, again I believe, I'm not 100 percent on that. I'm using a shortened maintenance schedule because I use the car for Auto and Rallycross so I'm ok with changing the plugs a bit more often.

I replaced mine with Bosch once, it drove like shit and I immediately replaced them with NGK.

I put the expensive double spark, spark plugs into a Mitsubishi galant one time. Plugs were supposed to be hotter and make the car run better, after a couple weeks I swapped them back out for nkg’s that I checked the gap on, car ran better.

I’m working on my 08 GTI FSI and man she loves my paycheck like no tomorrow! But she is the greatest car I’ve ever owned. Congrats you’re going to both hate and love it!!! Check the coil packs! Mine use to misfire all the time. Brought it to three shops before I personally replaced all four and bought nothing but NGK or Bosch plugs.