Spark plug Bosch or BRISK

Put the one piece Brisk in so that you don’t have to relive that again.

I ran the Brisk plugs for 6200 miles .. a bit over the 5K recommended interval. Installed Denso 5749 plugs this weekend and maybe I'm imagining things, but it seems a bit less temperamental at highway speed passing pulls. With the Brisk's installed lately I was getting some hesitation with WOT. No more.

Since I mounted Bosch 4-prong spark plugs, fuel economy has improved a lot. Gone from 12-13 km/l to nearly 15 km/l.

I have only used Bosch plugs in my cars, and I have not had any issues with them yet.

Bosch iridiums, these for longevity, copper ones have better spark if your concern is performance

Bosch spark plugs aren't bad, per se, but they're not really anything special.

I recently just replaced my spark plugs they were past due. So I bought the OE Bosch 9683. The engine runs fine, starts easy, no misfiring, no rough running. But after the plug change I am getting much worse millage.

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.