Help identifying this please?

[Maidment_Grand]

Hi All, any idea what this is (about the size of a 50p piece)?

Cleaned the van yesterday and found it on the drive, any help appreciated!

 

[calikev]

iIs the little tab that keeps your fuel flap closed by the door

 

[Maidment_Grand]

iIs the little tab that keeps your fuel flap closed by the door

You’re spot on! Cheers.