Reviews of Bosch spark plug

I have never seen any real large difference in NGK, Denso, and Champion if the proper heat range/type plug was used.

I'm not a fan of the old platinum Bosch design or regular autolite.

Yeah, I'd rather use some cheap BOSCH SUPERS or other $2 copper plug than any Autolite.

Sometimes you just have to try a few sets. I have a '97 Jetta which had NGK plugs in it for close to 4 years. I went through two sets of NGK plugs and couldn't get the car to run. I switched to Bosch and it started right up and ran fine.

Lesson learned: DO NOT EVER EVER EVER USE BOSCH PLATINUM (STANDARD TIP) SPARK PLUGS IN YOUR VR6 ENGINE.... THEY JUST DON'T WORK!

Since Iridium is tough, and there is platinum at the tip of the movable electrode, I bought Bosch Iridium.

If you use anything but OEM plugs in a stock white block, well just don't do that. Also Bosch Platinum, great for having to pull your head and find out what the center of the plug did to your engine

For the OEM Bosch plugs, I would check them every 10k-15k miles at a minimum, based on what my stock plugs looked like @ 19k miles (sh!t).

God knows they can only be as bad as the Bosch plat +4's, Man those are terrible in basically everything I've put them in... good luck!

Had bad bosh plugs before.

Never had a issue with OEM ac-delco or Ford plugs/parts.

Bosch W7DTC plugs were the best, caint get them no mores, use NGK BP6ET plugs instead.