Spark plug Bosch or Champion

That is what I am running in this 1996 Corolla and my gas Mileage is better than ever! Made a huge difference in power .

We changed that spark plug and the customer was happy with the magneto drop. That spark plug worked fine on a Champion spark plug bomb test.

Champions quiet redesign of their plugs to match Tempest made up my mind. It matters, and Champion is just trying to save face.

For the last twenty or so years I have only used Bosch plugs. I have had great service in my VWs, Toyotas and Ford.

if not oem ACDelco get ones from the likes of ngk, or bosch.

When I had dino burner cars, I did all of my own work, and always used Bosch Platinum plugs for my specific engine and heat. Iridium last the longest life, but are more sensitive to getting hot and causing pinging.

I ran them for awhile in my Passat VR6.They did decent.Burned really well actually. I think when I was running them I only got about 23 MPG.

Long story short: changed spark plugs 4000km ago as per my 2019 Hyundai Kona 1.6t manual. Followed Service manual, and the recommended torque on the side of the box of the Bosch (non OEM) replacement, 17 ftlbs.

Grounding electrode on plug #3 failed, destroying 2 valves and marking up the cylinder wall.

I just put Bosch plugs in my 13 Veloster turbo and got 300 miles and it started missing replaced with the ngks no issue since

Do not I repeat do not put Bosch plugs in any import. Don't know why but they always cause problems.