A resting voltage of around 12.5 is not ‘good’ for stop-start battery. Replace it as soon as you feel you can as other errors will follow otherwise…. The car will start with much lower resting voltage than that, but the monitoring systems around the car will start to show errors if it drops any lower at start up.
As soon as my wife stops buying Fiat branded "fripperies" I can buy a battery
Why do you need disco lights that flash in time to the radio