The exhaust flex pipe can fail causing excessive exhaust noise from the front/center area of the vehicle. The flex pipe is a flexible joint in the exhaust that allows for engine movement.Google+
Car Problem Reports
Saab 9-5 Excessive Exhaust Noise from Flex Pipe Failure
Saab 9-5 Problem
Average Mileage: 121,461 mi (62,000 mi - 220,000 mi)
Visitor, 2008 Saab 9-5, 95,000 mi
2008 SAAB 95 AERO. Front pipe flex section failed - nice loud exhaust noise, increased HP from reduced back pressure & annoyed neighbors. $102 - http://www.partsgeek.com/mmparts/exhaust_pipe/saab/95.html
Visitor, 2003 Saab 9-5, 113,000 mi
flex pipe failed, the car is very loud now.
Visitor, 2000 Saab 9-5, 220,000 mi
Flex pipe and piece of steel behind rusted out.
Visitor, 2000 Saab 9-5, 95,000 mi
flex pipe needs replacement, as well as a new muffler, as a huge hole has rusted out of it.
Visitor, 2002 Saab 9-5, 134,000 mi
Loud exhaust humm in the front/center of the vehicle. I will update with a mechanic/cost.
Visitor, 2005 Saab 9-5, 125,000 mi
Sounds like my flex pipe just went.
Now I need to find out hiw much it is to have repaired
Visitor, 2007 Saab 9-5, 62,000 mi
Not solved yet. Covered under extended warrenty but Saab does not have parts in stock due to bankruptcy. They said they hope to have this addressed in the next couple weeks.
Visitor, 2003 Saab 9-5, 105,000 mi
Just had flex pipe replaced due to excessive noise. Noise is from front of vehicle. Shop said they do wear out and fail. It was replaced at local car repair business that does exhaust work. Took about 30 minutes.
Visitor, 2001 Saab 9-5, 103,000 mi
Same issue as described.