Audi A5 B9 2.0 190 In the interest of sharing info (and to mitigate an AdBlue system related issue) I have been logging what VCDS tells me on some parameters. My driving pattern is a 70 miles round trip for work (3 days/week) of A roads, and several 15-20 minute trips of again mostly A roads. We typically use my wife's car at weekend, otherwise I'll do another 60 miles round trip (minimum) drive on A roads. My driving style to work is either conservative (avg. 57mph to get 76mpg+)