Quote:
Originally Posted by Rick-sta
The cat may need replacing. Had this on a previous non mg rover car. Failed on emissions, no engine warning light or anything but the cat needed replacing. Once replaced it passed no problems.
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Yes a new Cat will often get them through a test but the quality of non original cats is often quite poor and they will often only last a couple of years max. If you can get the original Cat to pass you it will be a better job and be a lot cheaper.