Audi A6c8 rear spring lower mounting corrosion

[Mickwillow]

Hi so my car has just turned 4 years old and it’s been to Audi for its 2nd MOT. It passed but had an advisory for Offside Rear Lower Coil spring mounting corroded but not seriously weakened! 
They want £320 to change it ! £18 part which is a rubber mount with a aluminium strengthening plate mounded into it that corrodes! Great idea not . 
So has anyone else had any issues yet? 

[Steve Q]

First time I've heard of this. Sounds like a design flaw. 

[dalswinton]

Hi, 

I had the same problem on my 2017 a4 allroad last year, 

same place, o/s/r lower, I had mine replaced at an independent

v w garage  at just over £100.

p.s. my brother, who has the identical car had his go as well on

the o/s/r/    seems funny it is always the o/s/r. that goes.

[Mickwillow]

Never had a issue with my 2017 A5 and my father in law has that now , does seem very poor for an Audi just turned 4 year old to have issues like this already, cars only done 28k ! 
 I have found a guy with YouTube that found the same problem when changing his spring on a A4 funny enough 

 

[Stevey Y]

7 hours ago, Mickwillow said:

Never had a issue with my 2017 A5 and my father in law has that now , does seem very poor for an Audi just turned 4 year old to have issues like this already, cars only done 28k ! 
 I have found a guy with YouTube that found the same problem when changing his spring on a A4 funny enough 

 

Hi its quite a common problem mostly the rubber bit rotting out but if I were you I would take heed of the term not seriously weakened, get under the back clean the alloy bit with a small wire brush and then give it a coat of Waxoyl that will keep the rot at bay for years, did mine when I first got it 2019 and they were still good four years later.

Steve.

[Mickwillow]

Waxoyl’s  a brilliant idea Stevey 👍 think I’m going to try and change them first then apply the waxoyl 

[Jim Ridley]

Just Checked mine after reading this ,glad I did off side one is rotten 

 

Edited June 8 by Jim Ridley

[spartacus 68]

Waxoil won't stop the corrosion. The alloy insert is there to strengthen the rubber suspension seat. It corrodes from the inside. Leave it and you risk the spring breaking. Easier to replace on a 2WD car. On quattro, you can remove lower shock mount. You need a piston jack to extend lower trailing arm down. Worst case scenario, loosen subframe bolt a few turns too. No need to undo the eccentric bolt either.

[Mickwillow]

I didn’t need to do anything apart of removing the lower stock mount bolt and then use a bottle jack and a piece of tube over the bottle jack top to the stock top mount fitting bolt , 

using a pair of springs compresses to compress the spring evenly enough to pull out the rubber mount 

I’ve got to thank Spartacus  for his write up . And mine s a Quattro too 

a

[Mickwillow]

Heads up the screwed on my spring compressors were too long so I cut them down.   But I only paid £25 for them 

[Mickwillow]

Mark you see the plastic rivets on the lower arm I had a problem removing them so  I ended up replacing them ! £10 for 4  , 

Job  took me about 2.5 to 3 hours