Spark plug Bosch or OEM Mazda

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’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.

I use Bosch everytime I can, minus their $90 spark plugs lol

Avoid the NGK’s Bosch or “Volvo” (also Bosch) plugs are way better than the NGK’s.

I had good luck with ngk bp6hs, Bosch w8Bc, champion l87yc and renault oem short thread (yes, really.) plugs. Bosch w8ac used to be good but i had some arrive not working out of the box recently so I'm now avoiding them.

I'm still not entirely convinced that it is weak or under ignition versus over fueling. Either way it just seems like it's having a hard time burning the fuel that it is getting. I still can't help but wonder about the Bosch Platinum 2s. I have had good luck with them before my Mark 2 GTI and the car did run well with them for a good 10 days before all of this started.

I went with OE ignition coils and bosch spark plugs and the misfire went away for a couple days but came back on my drive to school.

I replaced my sparkplugs, and everything went smoothly except for the front plug on the driver's side. All the other spark plugs screwed in with little to no need for a socket wrench - except for tightening at the end.

This one plug seems to be stuck halfway down the middle of the thread and won't go deeper unless I really torque it. When I took the new spark plug out, I noticed that the tip was bent with the spark gap being much smaller than the other new piece.

Neither, I’ve seen Bosch plugs fall apart and I wouldn’t trust autolite on my lawnmower.

Installed new Bosch Plugs (WR7DC+), Bosch Distributor Cap, and Rotor. Now the car seems to be having a weird idle sitting as stop lights, and the engine almost shut off while I was backing into the garage. Also she seems like its having a harder time sterting up as well.