It's already been so long, I honestly can't remember mine. But I had to replace my fuel filler cap due to the rubber tether wearing out....then the mechanic came along and replaced it AGAIN after a cap-seal diagnostic code popped up.
Now HIS replacement is popping repeat codes, and he doesn't want to replace it.
....I'm going to order the cap myself again, and I can't remember if the OEM cap had white lettering warning on it (like many US an UK caps often do).

Those of you with Petrol XE's from 2017 through 2019.... does your gas cap have the warning writing on the cap in white letters? Or is yours clean and no-writing?

 

No writing, just this sticker...

 

Mine looks like OldGuy's, but without the sticker. No labeling on it anywhere.

 

Mine looks just like OldGuy1's too... with the sticker...

Does anyone know if the QR code and "LEV III" mean anything?

 

Think it is "Low Emissions Vehicle" III. Which was a standard developed by California in 2012 or so... I imagine that those without a sticker are just because it fell off....