Welds May Crack on Front Catalytic Converter on Mercedes-Benz ML430

Submitted by Vehicle Owner · May 29, 2025

Published by RepairPal

Problem overview

An exhaust leak may develop due to cracked welds on the front catalytic converter. Replacement of the catalyst is recommended; re-welding of the catalyst is discouraged because it is an emissions device.

8 people reported this problem

4 comments

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Mercedes-Benz ML430 vehicles with this problem

3 model years affected

2001 Mercedes-Benz ML430

2000 Mercedes-Benz ML430

1999 Mercedes-Benz ML430

2001 Mercedes-Benz ML430

2000 Mercedes-Benz ML430

1999 Mercedes-Benz ML430

Average mileage: 99,666 miles

(73,000 - 145,000)

Repairs related to this problem

Catalytic Converter Replacement

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