whine

I have another strange noise with my LR Exclusive Which I bought at the beginning of April. When you get to 37mph you start to hear a motor whistle which stops when you reach 40pmh. If you slow down it comes back. If you sit between 37-40mph accelerating and slowing down the frequency changes...

(this is a copy of a post that I had mistakenly added to the wrong forum) I have a 2023 MG4 Trophy, with the rear spoilers. The car makes a constant high pitched whine at high speed, over about 60mph. I took it to my local MG garage a few months ago and was told there isn't a fault. The noise...