That looks like a new plug....
As its under warranty it might be prudent to send a cold start video to your dealer for their opinion?
Thank you Rog. As I look at it, it does look suspiciously un-burned. But I have put over 1,000 miles on the car since I got it three weeks ago (and obviously haven't put in new plugs during that time), and I don't quite know what to make of that. Hard to believe it's only been firing on three cylinders all this time, as it feels quite peppy...
