yes. they are part of car so need to be included in the MOT. If your driving in fog you need to use fog lights, so they need to be in working order.
There is one reversing light. There is one reversing light.
?
There are two backup lights next to the red tail lights.
there are 2
There could be a bad relay switch. The fuse that goes to these particular lights may also need replaced as well.
Yes
how many reverse lights on a polo 2011
one
1
It has only one reversing light :)
just the 4