Spark plug Bosch or BRISK

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.

Been using the cheaper Brisk brand and never had an issue for 20k miles.

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.

the spark plug is less than 10k km old (bosch) so I initially did not change it. Decided to change it anyway to original mercedes (turns out made my NGK) bam emission passed, LTFT now hovers at 5-8%.

Brisk are fine. You have to check them about every 5,000 miles. And change out sooner than other brands.

I learned this after installing Bosch plugs in a Honda many moons ago. Japanese cars like Japanese-designed plugs.

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.