Q: I had a catalytic converter installed in my vehicle in 2013, now I'm being told I need a new one. How long is it suppose to last?

asked by on September 12, 2016

I had a new catalytic converter installed in 2013 on my 2005 Toyota sienna van in the vehicle had 180,000 miles at a time. Now my vehicle has 245,000 miles and I am being told that I need a new catalytic converter. how long are they supposed to last?

Hello. Most vehicles do not have to have the catalytic converter replaced unless it becomes damaged due to road debris or it overheating severely. With that said, it is possible your car may be running a bit too rich (too much fuel in the air/fuel mixture), which can cause the catalytic converter to overheat.

When this happens it can become clogged or filter excess gases poorly, which will cause the vehicle to run very poorly as a result (think of a sink being backed up), not allowing it to flush out toxic gases which become backed up inside the vehicle’s exhaust system. If you not experiencing any drivability concerns, I would ask the person why they suggested having it replaced. If you would like to have the car checked for a second opinion, a certified technician from YourMechanic can come to your home or office to give the vehicle a complete inspection.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

My car has trouble starting first thing in the morning or after sitting around for a while.

There are many causes of hard starting but illustrative ones are a faulty engine coolant temperature switch (sensor), malfunctioning idle air control (IAC) valve, vacuum and EGR leaks, inadequate fuel delivery or pressure (clogged fuel filter, injectors), and contaminated or...

Check Engine light on. Would the computer give all error codes in one shot? How do we know the engine's condition?

Hi there. From the description you have provided, I'm am inclined to agree with your assessment of a used engine being installed in your vehicle. An inspection of the engine, by a qualified technician could determine whether the engine is...

Toyota Corolla vs. Scion IM

On that one, it's a toss-up. Toyota makes Scions. That was an experiment they had--"let's call these little cars Scions." They shut down Scion and now they are going to call all of them Toyotas. They are both good cars....

Related articles

How Exhaust Systems Work
It It all starts in the engine In order to understand how the exhaust of a vehicle works, there must be a basic understanding of the engine as a whole. The internal combustion engine in its simplest form is a...
2012 Toyota Highlander vs. 2012 Dodge Durango: Which One Should I Buy?
Sport Utility Vehicles (SUVs) are a fun class of vehicle: not only are they great for carpools and moving around friends and family, but you can also get them off-road and just get dirty and have fun with them. These...
The Best Used Cars to Buy If You're a Teacher
If If you are a teacher, probably foremost on your mind is getting to school on time. You would also probably like a used car that is easy on gas and not terribly expensive, and will hold your gym gear...