Dash rattle

[Lucki]

Check the inside rear view mirror and the rain sensor housing behind it guys. Just hold them down as you are accelerating and see if the rattle stops. They turned out to be the culprits in my car after I suspected the dash for a long time. Also check the sunglass holder.

MK3 Octavia - List of Defects, Faults and Issues

[Nicolai]

We have a rattle between 2000-2500 rpm that you can mainly hear on the drivers side. Somewhat intermittent and it doesn't seem to matter too much if its in normal and sport. It is annoying, because everything else in the car is so quiet.

I have the same rattle coming from what sounds like the drivers side air vent. Mine can be heard when lugging the engine at the rpm range you described as well as rough roads...it's a buzzing/rattling sound which can't be stopped by pressing on anything in that area, well annoying! Did you find a solution to yours?

[DETROITCANDY]

If you have an OBD11 you can run a sound actuator diagnostic that may help determine where the rattle is coming form or whether it is caused by the actuator itself. It runs a test tone up and down through the frequency range it works in and you will be able to quickly distinguish if a part of the trim has a resonate frequency that's causing the rattle. I'm guessing that is what the function is there for, helping service team find rattles. If you take it back, they may just stuff some wadding in behind the glovebox. Sometimes the sound actuator themselves aren't seated properly in their mounting position. I remember a lot of people had the same issue with the 6R Polo Gti. The sound actuator mounted on the firewall in the engine bay (under the windscreen-wiper /cabin air intake plastic cover) just needed to be removed and clicked into place properly and the rattle was gone. I'd hazard to guess that they didn't reinvent the wheel with the placement for the Skoda and it is probably is in the same spot.

The other fix I saw on other car of the same model was wadding stuffed in behind the glovebox, I thought it was a bit 'ad-hoc' until I pulled it out and found a VW part number sticker on the wadding..... Sometimes the simplest fixes are the best.

[Notyettrending]

+1 to that, centre speaker was my culprit. Asked the dealer to fix it for me at the service. Apparently some extra foam was used to remove the vibration.

[HPRS230]

+1 to that, centre speaker was my culprit. Asked the dealer to fix it for me at the service. Apparently some extra foam was used to remove the vibration.

I found if you put the soundtackor to eco is fine, I have now OBDeleven'ed it to 0%.

[DuaneDibbley]

My MY18 RS wagon has his issue too.

Seems most often to come from the rear vision mirror mount. But I’ve also noticed a new vibration from the centre air vents.

Turning down the fake engine noise helps presumably due to using the centre speaker less.