I'm like Maui, just passed 4000 miles so far and got mine about a week after iirc.
Few niggles but nothing really huge.
I find that the ideal driving position for me means I can't see the warning lights along the top of the dash where the indicator lights are (hidden by top rim of steering wheel) so have to dip my head to make sure I've flipped the indicator stalk enough when I'm changing lanes.
I've tried to like CarPlay but in the end I've resigned myself to the fact it just doesn't suit me. Fair play to those who use it but I just find it clumsy and poorly excecuted. Also, the size of the text and icons on the mmi is ridiculous, a real distraction. A lovely hi-res display wasted with enormous icons that make everyone who's seen it try and change tracks thinking it's touch screen.
OK, honesty time. This is my third A4 and I've always wanted a flat bottomed steering wheel. It's a stupid idea, wheels are meant to be round for a reason!
The matrix headlights are nothing short of phenomenal and cannot be highly enough recommended.
Also, the way it lights up the kerbside as you approach junctions etc is a nice touch.
I spec'd the advanced key as I wasn't aware it was part of the sound and vision pack as some have found. Think it's a bit strange that the configurator and the dealer let me pay for something twice? Anyway, I can honestly say it is my favourite thing on the car at the moment. The keyless go makes so much more sense when you don't have to get the key out of your pocket to unlock or lock the door - the foot operated boot thing is a bit of an art I haven't mastered.
I was a little worried the auto box would be a little clumsy but it's near perfect, especially in dynamic - I'm sure it's sat position linked as it changes down from coasting when approaching a corner or a change of speed limit.
Interested to hear what others thoughts are so far...