Well I'm in Italy and most of the time it works.
But I've refilled the gas 3 or 4 times and never has it ever once worked. First of all the payment system at the pumps are old and do not have contactless at all.
I just filled up today where you fill up and pay inside but they said their contactless terminal wasn't working.
One thing I notice sometimes is that they hold up those portable terminals up to your phone and while I try to select the card I want to use before authenticating FingerID, they pull away the terminal, thinking I've already authenticated it when I was swiping to select the card I wanted to use.