Most countries have official government websites addressing this problem.
Go and search!
Example UK:
https://check-vehicle-compatibility-e10-petrol.service.gov.uk/en/manufacturer/Fiat
So 1,6 L petrol should NOT run on E10.
It's based on ACEA report:
https://www.acea.auto/files/E10_petrol_fuel-vehicle_compatibility_list-2021_update.pdf
Example Poland:
https://e10.klimat.gov.pl/ - same result, DON'T tank E10.
View attachment 477078
You can run some E10, but the fuel system will deteriorate faster, that's it. In such old car it is worn already.
So you will fix it (like a fuel pump replacement, "rotten" hoses, cracked seals/o-rings) soon or later anyway...