I'll bump this with two contributions:

I have platinum with sixt I booked a BMW iX in Milan, i got there and they gave me an Audi Etron sportback. First of all, yahtzee-- that car has an incredibly high rate of charge north of 150kw IIRC, secondly its a big car and its quick. So that's nice. Problem came when I needed to charge it, long story short they provide a charging cable in the front trunk of the car. I could not find that for the life of me, and they did not inform me that's where it was kept. That's the biggest thing about charging in EU versus US. In the US the charging stations have their own cables--for better or for worse, sometimes people destroy them, sometimes they enable 350kwh charging-- but in the EU you bring your own cable and plug into the wall just like you would charge an iPhone. The custom is to provide the infrastructure/outlets, you pull up pull out your cord, plug into the outlet plug into your car once you're authorized to charge and then it flows. It's pretty easy, but be aware of the charging tariffs. 75+Kwh batteries at 0.85/kwh means your fill-up is gonna be like 60+ euro. Look for stations that charge less, or better yet park at a hotel that lets you charge for free. Moreover, if you're having a hard time finding a place to charge, look for Lidl or Carrefour, et. al. Grocery stores have made commitments to EV charging, and the charge rates aren't that expensive. ~0.25kwh, albeit at slower rates, but go in there and get a water, a snack, etc. Beyond that, pure EVs (non hybrid) avoid a lot of tolls and tariffs in city centers. There are also great places to park in cities that have charging infrastructure. In a way, you kind of have your own handicapped parking pass. So, park somewhere, plug in and enjoy the sights.I charged my car up before i returned it, but i returned on a weekend when they were closed, and didn't get any kind of notice that it was under charge or lacking fuel, so idk. I think it's a franchise discretion kind of thing.

Second thing: I'm getting another EV in France soon, they list the ID.4 as a sedan--on what planet is a 4 seater SUV a sedan when they also have the id.3 and the tesla model 3 available? I'm hoping to get the ID.4 but I'm curious what else is in their EV fleet. Does anyone have experience with renting from them in france?