We have a 2020 A4 Progressiv S-Line with around 20,000 miles,. There is a subtle but persistent noise/vibration from the steering wheel or binnacle, it's hard to pin down but is annoying. At steady speeds between roughly 30 mp/h and 70 mp/h it sounds like a dry or faulty speedometer cable would sound in an older car, no vibration felt through the steering wheel. I'm hoping to find out what this is before going into the dealer as they may say "We couldn't find anything" which often happens if their mechanics don't give a rats........Any help appreciated.