Most cars will have one catalytic converter. If you have a car with a dual exhaust system, however, your car will have two catalytic converters. If your catalytic converter needs to be replaced, you may notice one or more of these warning signs:
Repairing or replacing a catalytic converter can cost you anywhere from $945 to $2,475, including parts and labor. For this reason, most people consider catalytic converter repair and replacement to be a last resort, especially if your car is older or has a lot of miles on it. If you have a newer car, though, it’s possible that you still have an emissions warranty, in which case the replacement cost will usually be covered.