Charging fully.

[Jomarkh]

Try resetting your long term trip counter.
Put into eco and turn everything off heater air con etc.

 

[BugEyed]

the battery is showing as 100% but my range even on ECO is only showing as 218 miles

The value shown is based on recent efficiency combined with which mode you're in and how much power is currently being used.

Exactly. This implies that your recent driving before charging was using energy at a high rate, perhaps you were driving at Motorway speeds with the AC on?

Where I live is at the top of a long uphill climb (200m in 3 miles) from my normal direction of approach. This means that my GoM range actually increases by about 15% every time over the post charging estimate once I have driven the first few miles and the estimate becomes based on driving downhill rather than coming uphill on the last part of the previous journey. It's all a bit meaningless unless you are stretching the limits of your range to the next charging opportunity.

 

[smokie]

... and the summary of what's been said above is that is is not anything to be concerned about, it's just the way it works.