Thread: W220,320l,S Class, exhaust rattle

2001, 90,000 miles, Can anyone advise me please,(do not want to scrap car) i have this intermittent rattle coming from the exhaust system that alters with engine speed, i have been to 2 well known exhaust centres that have both said catalytic converters are the problem, now do i fit after market, choice of ceramic or metalic or MB very costly ones ???

Aftermarket CATS can be ok but the real MB CATS are so much better in quality and sound.It just depends on what you can afford and if you wish to keep the car for along time.

thats what i have been told by indepandants but not suppliers and installers could lose performance and could have noise issues with it but the difference in parts alone is £600 to £800 to replace with the MB type.