(Yes, it needs a bath)
I wasn't sure how well the titanium colour would work on white, especially knowing how great black wheels looks, but I think it looks fantastic.
Are you thinking of the A4? That has a 2L inline 4, while the s4 (the B8 at least) has a 3L v6.
I’ve driven through some really heavy rain with this car without issue, but never through deep puddles.