One problem related to engine knocking noise has been reported for the 2001 SAAB 9-3. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 SAAB 9-3 based on all problems reported for the 2001 9-3.
At approximately 75,000 miles, driving on the interstate around 70mph, oil light begins flickering. After slowing down to 60 the light stopped flickering and instead stayed on. From the time I was able to slow down to pull off the road a knocking sound could be heard from the engine progressively getting louder. The car was then taken home and inspected. Removing the oil pan revealed that the oil pick-up tube was clogged and the pan was caked with burnt oil. A local mechanic estimated $3,000 to repair the internal damage. Called SAAB, they said the car was beyond any warranty and that it was my fault for not turning the car off immediately after seeing the light. Furthermore after researching this issue, I spoke with 3 SAAB representatives who claimed to know nothing of this oil sludge issue and were not able to bring it up as it does not have a recall number, a fourth one was able to pull up a record based on my v. I. N. Showing that this known oil sludge problem was "repaired" back in 2006 under the name "special policy" which was good for 8 years after the in service date so long as all records of the car were kept. According to this report my argument was pointless considering I was approximately 5 months out of warranty and did not have the required service logs.