Huh I wonder why the 7.5 is louder?
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Why do I feel this car has more cabin noise - is it my imagination, I don't thinks so as I am comparing the facelifted MK7.5 GTI to my previous Mk7 GTI
As I have written in other posts I purchased a facelifted Golf 1.5TSI around 6 weeks ago and soon realised that the cabin noise was excessive due to a loud droning noise. The dealer agreed there was an unusual sound and replaced a left rear wheel bearing. This made no difference to the sound. I tested a similar model and that was the same. I then drove a MK7 1.4TSI and that was perfect in terms of cabin noise. As I had 30-days to exchange for another vehicle I eventually replaced it with a 2018 GTI.
Now I come from a MK7 2015 GTI so I knew what to expect. In my view even this this new facelifted GTI suffered from more cabin noise than the older model, so much so that I have used Silent Coat over the spare wheel well area. I also removed the rear wheel arch liners to enable me to use Silent Coat to cover those areas along with Silent Coat under the rear seat. Under the boot floor and parcel shelf I have use acoustic foam.
The result is a definite reduction in interior noise. Finally I just knew that the Potenza S001 tyres are not good in terms of comfort and noise so now I have the Goodyear Eagle F1's. With these there is an immediate difference in ride quality as they appear more compliant and sharp ruts and ridges are handled better. Due to my experience and that of others worldwide who suffered with the original MK7 shock absorber problem I decided to fit Koni Active rear shock absorbers that without a doubt are an improvement over the original Sachs. Even though VW have had a number of years to deal with that shock absorber issue I still believe today that the Sachs shock absorbers fitted to current cars do make a certain noise over ruts, ridges and potholes etc. The Konis do not make any sound. I could have fitted the less costly Bilstein B4's as I did on the previous GTI but decided to go for the Konis which for me was a good move
The result is a much quieter and more comfortable car. I would like at sometime to fit Silent Coat under the front wheel arches as that should make a further improvement. I just do not understand VW who should do more to reduce cabin noise and ride quality. It has cost me around £550 plus my time on a new car to make these improvements. For me it is money well spent but should I really have to do this on a new near £30K car!
http://www.vwgolfmk7problems.uk/