No get a cup spolier, these clio look so bland and boring with no spoiler. If you don't like the cup spoiler then they do other smaller ones, that still make the rear less boring.
That would make more sense than just failing because of a wire hanging out the back.
I honestly think that they will only be checking the auto level and washer jets are working if installed, as part of this new mot requirement.
A lot of people saying different things, so I guess we will...