Switzerland is tad fussy about messing around with components - so anything clearly modified is out. The car has been tested and failed - so they are expecting a fix.
Rear exhaust will raise questions and an expensive fix - along with new side silencers.
I have a sneaking suspicion that the car was never noise checked when imported.
FYI the test is every 4 years in the first 10 years of life - every 2 after then. Although it is now 5 years 2 months since its last test!
