No. Look at the photo, part of the ceramic in the middle is gone. The electrode is loose. No idea how that could happen, but my friend who is a Mercedes mechanic suggested a production error with the plug itself. Funny thing is that I was going to take the plugs out today to check them because it's been running funnily lately, but alas, 400 meters from home it blew to pieces. Haha. I've been driving an absolutely ridiculous amount every day for work lately, so something was bound to give in. This motor hasn't used any oil at all before (none!), but now it's all over the place. Grr!