This may not be helpful to the OP, but maybe for others reading this thread it will give them pause.
I stopped renting cars in Europe a long time ago, more than a decade ago, over just such BS as this...that, and the mysterious traffic violation notices people report receiving from a foreign rental, months and sometimes a year or more after the rental. No thanks, I do without a rental these days when constructing a trip itinerary in Europe or elsewhere abroad.
Once upon a time, at least in the US, when you rented a car, it likely had minimal mileage on it, and minimal damage and unattended maintenance issues. Things changed more or less with the Great Recession (2007-09) and car rental companies stopped the practice of buying cars and holding them in their rental inventory for just a few months before selling them. Ever since then, it is much more likely when you rent a car, it will have upwards of 30k or more miles on it, and with that mileage, lots of dents and dings, not to mention maintenance issues.
I recently had a one day local rental from Enterprise. After leaving the lot, I noticed that the vehicle tire warning light indicated one of the tires was overinflated, north of 55 pounds psi...so was this a faulty monitor, or a dangerously overinflated tire? I pulled off the road and did a visual examination of the tires and did not notice anything indicating overinflation, and I only planned to drive the car about 20 miles total, but that damn light bothered me. If I had been using it for an extended trip / high mileage, I would have returned it, but I rolled the dice. When I turned it in, the rental desk clerk said he would note it, but who knows if anything was done...he didn't note anything in my presence.
I don't have many occasions to rent a car anymore, but when I do, I do a thorough exam of the vehicle with photos, and I return to the rental desk to discuss the damage I see, and request not just assurance but documentation that the damage I see has been noted in the records. I use my Chase Sapphire car when renting a vehicle, and knock on wood, I have never had any disputes with any car rental at home or abroad in over 40 years of renting, but at least if it happens here in the US, I am counting on Chase and US consumer protections to shield me from frivolous claims. And that is the problem, as I see it, dealing with car rentals in a foreign country.