I have a 2016 VW Passat SE 1.8t that makes a low humming sound in the front end when driving over 40mph and can be heard especially when I let off the throttle.. once I step on the gas the sound pretty much disappears and when I coast or ease off the gas the sound comes back! I can also feel a very slight vibration when I place my foot on the floor under the pedals.. what can it be? I recently purchased new tires so it’s definitely not that! Car only has 20k miles.. automatic transmission. Would appreciate it!
Can you make a YouTube video of the noise & post the link here?
Does it happen when you’re stationary/at idle?
I’d start by checking all your pulleys - water pump, alternator, etc. Then exhaust plumbing, then engine & transmission mounts (for the vibration).
If they all check out, I’d try this method -
Read the finding noises topic (on the FAQ page)
https://www.youtube.com/watch?v=wbsUTESwOMY
https://www.youtube.com/watch?v=oKiztI4nE98