Hello, I have 2014 Octavia 3, 110kW diesel, auto, currently 130k on the odometer. Yesterday, the car developed a new, strange noise while idling. Sometimes, the noise appears only when in Drive or Reverse, and always is present only when the car is stationary and idling/not moving. As soon as I start moving, the noise goes back to normal. 

I was wondering if anyone could identify what that could be? 

Here is a link to video I made, while reversing into garage. At the end, once I stop, I was changing gears, when it sounded normal, that's when I put the stick into Neutral. 

 

Any help would be highly appreciated! 

Cheers

 

Maybe the dmf rattling due to play. 

Exhaust Rattle.....make sure your hangers are all good and rubbers not broken. Otherwise, it could be baffles in the exhaust.