Hi, I’ve recently bought a 66 plate Leon Titanium FR with 16k mileage. It drives like a dream, a bit harder on the suspension but to be expected. I have an issue when I reach 70 to 80ish and that is a low repetitive droning noise, much like a washing machine, it doesn’t alter speed and drops off under 70. Is so annoying. Its not the cheap tyres as I had them replaced, its not wheel bearings, its not tracking as its been done twice. No vibration or swerve. What is it please? Is it a standard FR sound at this ticking over speed??? Its already been back to the dealer and they couldnt find anything, apparently they took it for a test too…