[UniqueGeorge]

Thanks everybody who has contributed. I have an MG ZS that I'd like to drive to Aosta at some stage: I used to live there and have friends although none where I can use a granny charger. My route would probably be via the Portsmouth ferries as I live just a few miles away.

The expense of French autoroutes and the associated chargers would tend me towards a slower trip with overnight stop(s): as I'm retired time is not quite so important. Has anybody any tales of trips to Italy generally avoiding tolls? It's appreciated that for certain legs, the A40 from Macon perhaps, it would be sensible to use the autoroute, particularly in winter. In the Val d'Aosta I always tend to use the SS26 as the tolls are so high.

The route national stretch between Riems and Chaumont through st Dizier and Joinville? is good, with sections of dual carriageway, and easy route following, saves a big wedge of toll is shorter and is only about 1/4 hour slower. Never done it in an ev though! May not be any convenient chargers.
I have found the route national north of Reims to be less convenient need a better navigator, cost more time and save less money on tolls, others may have a different view. I don't go as far as Italy, or indeed anywhere at all at the moment. Bon voyage

 

[UniqueGeorge]

Just seen you will be going through central France from Portsmouth rather down the east side.. sorry can't help much. East/West tolls between Calais and places like Chartres are not horrific, but I doubt driving across the north of France to get onto the A19? Would be sensible.