Is there a standard spec for S-Line seats? As in, are they manually adjusted or electrical, and do they all have the adjustable leg bolster (how does that work by the way?); if seat heating is not fitted, is it a huge job to retrofit?

Also, what is the standard audio like in the S-Line? I am quite happy with the standard audio in my A4, so if it is at least as good as that I will be happy.

Sat-Nav - does it need a SIM for it to work, or is that for a higher version?

Folding mirrors - seem to have fallen out of favour (or at least seem to appear infrequently at the moment), is there a reason?

Suspension variations between SE and S-Line -- apart from being lower, what is the difference? Do all cars have Drive Select, and if so what impact does it have

And finally, the climate control without the digital display - it seems the majority of cars I am looking at just now only have the rotary 'analogue' style controls - - do these still show the temp on the MMI screen as the A4 does, and are they as effective as the digital display ones?

Oh, and anything else you can tell me