Hello, 

 

My 2018 280 estate was in for some work this week, including addressing the knocking I've been hearing from the rear for the last few months. 

 

Garage recommended droplinks, but it hasn't solved the issue unfortunately. At just under 60k miles I'm ok with them being replaced. 

 

Garage suggested it could be the shocks, although I have a feeling they are pointing towards them simply because they're aftermarket (Koni Special Actives - exactly 3yrs old). 

 

After some digging, I found this thread - 

- and the concensus there was a faulty/failed wishbone bushing. 

 

Just wondering if anyone has had similar experience and managed to pinpoint the issue before I start throwing parts at it. 

 

Thanks 

does knocking disappear with loaded trunk?
i solved that case, by replace brand new Bilstein(FEBI) 12-281459 rear top mount with one year used OEM 5Q0 513 353 E
-> https://www.briskoda.net/forums/topic/510961-2023-280ps-lk-replaced-2016-220ps-style/page/3/#findComment-5854160

 

 

another story about solve rear knocking Koni,

not mine, i just saved the link

-> https://www.drive2.com/l/612649804215901503/

 

10 hours ago, MartiniB said:

does knocking disappear with loaded trunk?
i solved that case, by replace brand new Bilstein(FEBI) 12-281459 rear top mount with one year used OEM 5Q0 513 353 E
-> https://www.briskoda.net/forums/topic/510961-2023-280ps-lk-replaced-2016-220ps-style/page/3/#findComment-5854160

 

 

another story about solve rear knocking Koni,

not mine, i just saved the link

-> https://www.drive2.com/l/612649804215901503/

 

Thank you! The link is interesting, hopefully not my issue as modifying the top mounts might be tricky... 

 

Will try a loaded trunk and see if it changes. Did yours? 

30 minutes ago, amateurdad said:

as modifying the top mounts might be tricky...

and street illegal in most of civilized countries 

 

33 minutes ago, amateurdad said:

Will try a loaded trunk

mine hatch's trunk were fully loaded by books then

 

43 minutes ago, MartiniB said:

and street illegal in most of civilized countries 

 

mine hatch's trunk were fully loaded by books then

 

And it was quiet, or noisy? 

loaded became quiet in combination

Bilstein 12-281459 top mount + Bilstein B6 DampTronic 20-254353 shock

 

became quiet in all cases

OEM 5Q0 513 353 E top mount + Bilstein B6 DampTronic 20-254353 shock

 

Hi again,

Unfortunately still not got to the bottom of this knocking issue, it's even louder now and seems to be worse on the RHS.

What's been done so far:

Rear ARB droplinks (no change)

Rear top mounts (no change)

Rear Eibach lowering springs,

New OEM lower spring pads

New Audi top spring pads

All done at the same time as top mounts.

Still no difference, just even louder now I've driven on that setup for a while.

I'm starting to look into subframe / diff mounts, but there are so many it could be I'm hoping someone can offer a pointer in the right direction if they've had similar issues before.

Still want to try refitting the OEM shocks to rule out any 'slop' in the top mount, or bushing noise from the bottom.

I have been in the boot while a friend drives and the noise is coming from the strut tower area, as if the shocks are rattling around inside. Not just on big bumps, just general undulations in a normal "flat" road.

A local German specialist has quoted me £200 for a couple of hours diagnosis which I may have to do eventually but seeing how far I can get first.

Many thanks for any help in advance.

Just a thought but could it be a wheel bearing or the exhaust hanger bushes?

I had my rear exhaust hanger bushes changed to the MK7.5 Golf R ones (grey/black) as i was getting knocking from the rear.

Edited 29 September, 202529 Sep by Awesam

Exhaust pipe mounts?

1 hour ago, Awesam said:

Just a thought but could it be a wheel bearing or the exhaust hanger bushes?

I had my rear exhaust hanger bushes changed to the MK7.5 Golf R ones (grey/black) as i was getting knocking from the rear.

What was the reason you changed to the Golf R ones? Are they quieter?

1 hour ago, D402 said:

Exhaust pipe mounts?

Could be a great shout, will check!

8 minutes ago, amateurdad said:

What was the reason you changed to the Golf R ones? Are they quieter?

They are firmer than the standards so stops the exhaust from swaying and causing a clunking noise

5 minutes ago, amateurdad said:

Could be a great shout, will check!

Was under pushing and pulling on the exhaust today and it's not making any noise at all. Not sure it's the fix I'm looking for (ie an easy one!). Back to the drawing board!

The bush on the rear trailing arm is a known point for knocking.

I’d have the shocks checked first though.

Seen a few cases where the special actives fail early.