I have written much on this over the years so take a look at my views on my website
vwgolfmk7problems
I have also fitted the Audi damper this year and in my view it does reduce the noise from the rear. This damper will however do nothing for what has been referred to as "the rolling log syndrome" It certainly is not going to eliminate rattles. You will see from the website that the rattle came from the VW rear shock absorbers. I have had 2 MK7 GTI's and both had the same problem that was resolved by fitting Bilstein B4's to the original MK7 and then Koni Actives to the facelifted model.
My main gripe is quite a high frequency hollow ringing type sound that is of a frequency that is very irritating. This was not present on the on the original MK7 and that car was fitted with the same size wheels and the same make & type of tyre. I now have quite an amount of sound insulation fitted but this particular type of ringing sound is ever present and interestingly the frequency does not change with speed and can be heard even at 5/10 mph. I have also come to the conclusion that tire noise increases as road surface temperatures can significantly increase at times during summer months in the UK. On the newer super-smooth surfaces then the car is extremely quiet but many roads are not laid with the quiet tarmac that is thankfully becoming more common place.
It is doubtful I would ever purchase another Golf. If I did then it would be after a 48-hour test drive and not a 15 minutes drive around the block where the salesman is often more interested in demonstrating how wonderful the sound system is, as opposed to anything else, plus it would have to have DCC fitted and be significantly quieter than the current GTI, especially when used on long trips over perhaps not so smooth surfaces.
