I have 69,000 miles on my Murrrano, the car is louder then before upon accelerat on 2006 Nissan Murano

ation. Dealer said the rear muffler and center exhust need to be replaced.The back axle is rused out. I'm confused what the axle has to do with the exhaust. Does this make sense? Also the noise isn't extremly loud. Does the muffler needed to be replaced that soon?

Asked by for the 2006 Nissan Murano
In areas where a lot of salt and chemicals are used for snow and ice removal you see more issues with rust. The back axle may not have anything to do with the noise. Did they say that the back axle needs replacement? It may be a safety concern that they mentioned the axle.