I’ve always understood that the higher a cars speed the less efficient it is, and that dropping just a few miles an hour at motorway speeds can have a significant impact on range. Last week I drove from Lancashire to Stansted starting with 100% battery, and the sat nav indicated I would arrive at Newport Pagnell SuC with 22%. I presume navigation would plan for me driving at 70mph on the motorway. I travelled in the early hours, traffic was very light, I set autopilot to 80mph and maintained that speed for almost the entire journey. I was surprised that I arrived at the SuC with 21% battery remaining. Perhaps there were other variables involved but I really would have thought the extra 10mph would have had a greater impact on range.
I would have liked to have tried 90mph on the way back but didn’t want points on my license . . . .
I would have liked to have tried 90mph on the way back but didn’t want points on my license . . . .