That consumption is fair enough given the speed/roads/conditions. In my time with the eC4 when it comes to M’way journeys (sat at around 65/70) I always seek to have 1.5 X distance to next intended charge worth of range indicated on the GOM. Which I know will leave me some spare. If I bothered to work it out I think the actual ratio of miles done/GOM used on such journeys would probably be around 1.3ish?