How long should an exhaust last?

tsb

Thinking along the Consumer Rights Act that your purchase should be of satisfactory quality and last a reasonable length of time, regardless of any manufacturers guarantee or warranty. What is a reasonable length of time for an replacement exhaust to last?

The part in question is actually the catalytic converter section, so probably the most expensive section to purchase.

angrycrow

In what way has it failed. If it has failed emissions it could be due to a faulty engine. I had a Peugeot that could get through a cat in 2 years due to burning oil. I suspect the residual oil was getting into the cat and contaminating the plates.

Alter_ego

If you get a new cat, remember the old one is your's. It contains platinum

onomatopoeia99

My car is still on its original exhaust and cats (126,000 miles / 18 years), which is no indication of anything.

There are too many "it depends" factors to consider in exhaust and cat life.. Failure in under two years is entirely possible in the right combination of cicrumstances.

tsb

angrycrow wrote: »

In what way has it failed. If it has failed emissions it could be due to a faulty engine. I had a Peugeot that could get through a cat in 2 years due to burning oil. I suspect the residual oil was getting into the cat and contaminating the plates.

It is the pipe bit that has totally corroded, holes in parts of it. The catalytic converter part is pristine looking. So not an emissions fail or anything engine wise. Another pipe section was replaced at the same time and this also looks like new with no corrosion.

molerat

My last car had the original main exhaust and cat when I sold it after 10 years / 90K but was on its third manifold. The exhaust was fine but I had to weld on new support brackets as a couple had rotted away.

System

tsb wrote: »

Thinking along the Consumer Rights Act that your purchase should be of satisfactory quality and last a reasonable length of time, regardless of any manufacturers guarantee or warranty. What is a reasonable length of time for an replacement exhaust to last?

The part in question is actually the catalytic converter section, so probably the most expensive section to purchase.

When you get a replacement exhaust it is usually from after the catalytic converter. You buy the CAT separately or have to specify a CAT to be replaced as well. So if you go to an exhaust centre and have an exhaust fitted that will include everything but the CAT and manifold.

If the CAT comes with a short length of pipe as part of that section then it won't have been replaced when the rest of the exhaust was.

markudman

You have not said anything about your car IE make ,model, Year what sort of driving you do.

tsb

I've specifically not mentioned make,model, age,mileage because that wasn't my query. My query was to try and quantify reasonable length of time with ref. to the sale of goods act. I'm getting the feeling 2 years is the consensus

sevenhills

tsb wrote: »

I've specifically not mentioned make,model, age,mileage because that wasn't my query. My query was to try and quantify reasonable length of time with ref. to the sale of goods act. I'm getting the feeling 2 years is the consensus

If you are thinking a new exhaust part will not last 2 years due to rust, that is very unlikely.

sevenhills

tsb wrote: »

It is the pipe bit that has totally corroded, holes in parts of it. The catalytic converter part is pristine looking. So not an emissions fail or anything engine wise. Another pipe section was replaced at the same time and this also looks like new with no corrosion.

So the cat was changed, but its now a different part that needs replacing?