I've just got my S5 B9 a couple of weeks ago, moved over from an A6 C7 TDI 272, no regrets whatsoever. When I'm driving for work I use Efficiency mode , getting 37mpg on a long run, after just over 1k miles. The VC display shows E (gear number) with efficiency in green under it. When I've stopped and turned off the the ignition it resets to D (Gear Number) still with efficiency under it, but no gear coasting when the foot is off the gas, also it seems to make as much noise as the dynamic mode when accelerating. Is this normal? Does everyone else get the same? I can live with it but I'd prefer it to stay how it was before I switched off.