2015 STi DRL ?
 

Does/should a 2014/2015 STi have daytime C shaped running lights built into the headlight ?
Or is that just a shiny bit of bezel.

AFAIK DRL was a requirement when it came out but early models had the DRL in with/instead of the foglights.

If you have Halogen high and low beam bulbs there will also be a parking/clearance bulb accessible from the wing area behind the plastic arch liner.
If you have Halogen high beam and LED low beam then the parking/clearance "bulb" is a non replacable LED unit.

https://ministrant-sponge.000webhost...nce%20bulb.JPG

An early model on a 14 plate with, AFAIK, just the clearance/parking "side" lights on
https://scontent-lht6-1.xx.fbcdn.net...1e&oe=5DB7544A