Hello all - I am new to the forum so please excuse me picking the brains of wiser heads than my own as an introduction... I have had a 2017 model for about 6 months now - absolutely brilliant car to drive. It is a true Jekyll & Hyde: docile and refined in town and something else when the space is there to open up! I am struggling with a very strange, intermittent noise that has stumped everyone I have shown it to (including the garage I bought it from). The sound file below hopefully captures it: the recording is made just above the dashboard, although the sound seems like it is coming from the area around the driver RH side vent/A pillar/adjacent speaker. I have wondered given the location about (say) leaf material, but I have cleaned out all the vents with no joy. What seems weird is a) the noise is completely intermittent - one *normally* gets it at higher speeds and/or on rougher road surfaces, but no guarantee and b) it almost sounds like an electrical or metallic noise. It is very strange and I can't work it out at all. I've tried all the obvious things I can think of, including removing everything from the cabin of the car, turning the A/C on and off, different fan speeds, etc. All to no avail. The car is under warranty for a few months more, but without being able to locate it (the garage were unable to replicate it, even when I sat in the car with them) there is a limited benefit in hacking bits out to see if anything is amiss. Can anyone help at all? I would be very, very grateful if anyone has any bright ideas! Thank you for reading.