We took the car & caravan to North Wales close to Snowdonia total trip of 703 miles in which we used 67 litres of fuel . We use our handy domestic plug in charger whenever possible .
Initially dragging the caravan up & down some impressive hills hammered the drive battery & used some fuel but nowhere as much as we thought it would. Coming back home we used even almost three litres less fuel than going .
Free running without the caravan but with the three of us in it and also having my electric buggy in the back, the car gave us a much better return than usual. For by now both of us have got used to the car and have developed our own techniques for driving it.