I think we can agree that the exhaust notes of Italian cars and bikes are the Stradivarius of internal combustion engines. However, I'd like to introduce my list of
The WORST-SOUNDING cars I've owned.
#1: '74 Mazda RX3 (showroom stock)
Bad: On a good day this car sounded like a convoy of 2-stroke dirt bikes with exhaust restrictors added.
Worse: Broken Apex seal. The audible equivalent of a dragging a Port-a-potty thru a construction zone while making a batch of microwave popcorn.
#2: '66 Corvair Corsa (aftermarket "Trombone" exhaust added)
Bad: The "good news" is the car did achieve the goal of "not sounding like a showroom stock Corvair". However, the car did attract the attention of local law enforcement (ticket read: "Loud and excessive noise due to improper exhaust and rapid acceleration") while also having the attribute of rejecting the attention of 18-24 year old females. I'm just thankful that the "man card" didn't exist in the late 60's. If so, I would have been wrestled to the ground and had it forcefully removed.
Worse: Automatic car washes in the late '60s operated by latching on the car and pulling it thru stationary washing equipment. During such an event I felt a vibration and heard a loud "thump". Checking the rear view mirror allowed a full panoramic view of the bulk of my 3-day-old exhaust system lying on the ground. While, admittedly this is about as close to the car would ever come to mimicking the sound of a full-on race Porsche 911, it wasn't the result I was going for.
Even worse: 17-years old, freedom and a couple of quarts of Coors can lead to good times. They can also lead to you backing your car off the road into a ditch and burying the exhaust tips into a dirt embankment. The sound of car transitioned from spots car(ish), showroom stock, suffocation, and death. As they say: "What's the most valuable tool in your tool box?". Answer: "The one you have with you". I can report that the "tool we had with us" (beer opener) can successfully excavate enough material to dislodge the tips of a Corvair Trombone exhaust from a dirt embankment if time is not a factor.