I have a 2024 Vauxhall Corsa with a trim that includes the Blind Spot Alert function.
My previous car was a 2022 Peugeot 2008, and the Blind Spot Alert function showed the light on the wing mirror any time a car was in the blind spot, so it happened very often on dual carriageways, on motorways etc (as you would expect).
However, I have never once seen the light come on either wing mirror on my Corsa.
'Blind Spot Alert' is enabled in the car's Settings.
Just in case it only works whilst actively indicating left or right, I tried that many times on the motorway when a car was near approaching and again, never a light.
Any thoughts?