I used to hire regularly with Hertz for travel in the Scottish Highlands. This is a very rural area where even "main" roads are single track with passing places, so I booked the smallest petrol car as usual.
Unfortunately this time I was told that the only cars available was an EV or Pick up truck (too big for the rural roads I was using). When I said that wasn't what I requested I was basically told "take it because it's an upgraded car or leave it and we'll give you a refund". They continually insisted that the car they offered me (a Polestar) was a "significant upgrade" on what I had booked so would not back down. I was told there were plenty of charging points in the area I was going to and I'd have no problems because all the instructions were in the car. This was, of course, a lie.
Since it was at an airport and I had a deadline to meet I reluctantly agreed. It turns out all the instructions in the car means "we stuck a QR code inside you can scan with your phone". The car came with a shell charging key fob. It turned out the nearest such charge point one to where I was staying was 100 metres from where I picked up the car - Glasgow Airport. Every other one required a different app to be download first. Why - why can't I pay by credit card? Or the local Council ones you have to fill in a form and they'll send you a keyfob by post before you can use them. Yeah right, completely hopeless when you are away from home.
Most of the chargers didn't work at all. Those that did took many attempts with the app continually reporting "token errors" when I tried to charge or no longer showing the charging status. One of them even locked the charging cable to the charge point. The screen on the charger came up that "charging failed" and "disconnect cable", but it locked the cable in place so I couldn't and since the cable belong to Hertz I couldn't drive off and leave it without a very expensive penalty charge. Eventually, when I was able to get hold of someone on the telephone who was, after several attempts, finally able to get the charger to relinquish the cable. ALL the chargers I found only allowed you to charge for up to 2 hours after which you would be get a penalty charge and that was only enough to add around 40% charge as they were not fast chargers.
The worse part was that Hertz insisted you had to return the car at least 80% charged to avoid penalty charges. I had a 150 mile journey back to the airport and a flight to catch. I don't have time to wait around for 90 minutes to recharge the car back to 80%. So I got a penalty even though I complained that I was happy to pay the costs for electricity to return it to charged state but not the penalty since I hadn't booked an EV and didn't want one and didn't have time to recharge it before return. A petrol car takes 2 minutes to refuel and that is what I had booked. On the survey I gave a low rating an request someone from Hertz contact me to discuss it. They never did.
So never again to Hertz. The experience was awful, the company couldn't care less.