Well, count me in the failed injector camp. "Misfire in cylinder 3." Same symptoms as others, viz. VERY rough idle, check engine light, and, in my case, an accelerator pedal that did nothing. Press on the pedal and nothing happens. Weird sensation. Rather like a computer mouse that doesn't work. Oh, but the "ready to drive" message and icon were displayed.
I ran a health check and it said the check engine light is on. That was helpful. Engineering test mode showed no codes whatever.
Had car towed to dealer and three workdays later "DTC p0203" and "replace #3 injector." All done under warranty (43k mi). Including the tow.
So now I'm back on the road but with gradually failing trust in the cars reliability. Too bad. I really, really like the car.
PS: It's getting harder and harder to refrain from sarcasm when writing posts.
What's your mileage ? Thanks.