Any idea what this could be?

[Lemmonie]

Mini is nearly two years old. Had no paint work done, no recent valet, the mark has just appeared!

[227bhp]

Like Michael Jackson once sang, can you feel it?

[langtounlad]

Hard to tell from the picture. It may be that the panel has taken a hit, sufficient to put the slightest deformation in the bodywork and is only noticeable around the edge of the deformation. We had this on my wifes car - someone had probably stumbled against the panel in a car park.

[Lemmonie]

Nope, nothing to feel at all. Not raised in the slightest

[dtravis83]

Maybe take it to a detailer and get them to check it over? My friend used a paint depth measuring tool when going over my car and it was pretty interesting.

[227bhp]

It looks like the reflection from a window.

[Craikeybaby]

It could have been damaged and touched up prior to collection from the dealer.

[langtounlad]

My money is still on the imperceptible bump theory.
In our instance I'm sure that the panel flexed back after the impact as we assumed it was from a well padded backside.
So there was no edge to the area of impact and it was only visible in certain light conditions.

[scratcher_]

Craikeybaby said:

It could have been damaged and touched up prior to collection from the dealer.

You'd be surprised how often this happens.
As above, have the paint depth checked.