I have a 2017 RS3, 20k miles. A few weeks ago it started it up and the idle was erratic. Bouncing from 200-500rpms back up to the normal warm-up idle. Sounding like it was missing. After warming up the rpms would hang or even Rev up a tad when switching gears or holding the clutch in. The second day it went into limp mode while driving.
I took it to Ford, they said bad MAF. I have changed the MAF 3 times now. After the last time I also changed the throttle position sensor. Car ran great for 2 weeks.
This morning I started the car and it's doing the same nonsense. Asking for opinions on what it could be.