Exhaust System FAQs
What is a dual exhaust, and does my car have one?
If you have a V6 or V8, your vehicle could have a single or dual exhaust. Look at the rear of your vehicle. If you have two tailpipes, you have dual exhaust – one exhaust system for each engine bank. If your vehicle has dual exhaust, it also has two mufflers and two or four catalytic converters.
What are the signs of a bad muffler?
If your muffler is going bad, your vehicle will sound louder; you might hear the engine rattling (misfiring); you could hear something dragging on the ground; you might have condensation coming from the tailpipe, and your exhaust might smell unusual.
How long does a muffler last, and how long does it take to replace it?
It depends on your driving habits and how much roads are treated during the winter. Ice melt and salt wreak havoc on metal and cause premature rusting. A muffler can last between 40,000 to 80,000 miles, on average.
As for replacement, the average muffler repair takes up to 60 minutes, though some take less and some take longer. Bolt-on mufflers take less time than those that are welded into the exhaust system.