Hi Peter, like you I have a ŠKODA and got the Ovo 10000 miles free offer.
last year they credited me with £212 , this uses their 3.3 miles/Kw calculation.
Because of price increases in their rates, this year they will be crediting me £425.
I’m more than pleased with that.
It’s worth remembering, OVO allows charging 24 hrs a day, which I find useful.
Regards, wonky