Simplest way is an extended test drive (on the flat, urban speeds, 10c temp) to see how far it will go in EV with a full charge. Over 30km suggests it is OK for age of battery under 20km and it is getting tired. :idea: .
Sorry, but that's a decision only you can take, having had the benefit of advice. We don't know your personal circumstances to be able to judge the level of "risk" but good luck, whatever you decide.