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Mercedes-Benz
ML430
7

Exhaust Leak From Front Catalytic Converter on Mercedes-Benz ML430

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 99,666 (73,000–145,000)
3 model years affected: 1999, 2000, 2001
7 people reported this problem
Comments
Viewing 1 - 4 of 4 comments
Catalytic converter has a crack at the joint where it is welded. this is a design flaw from the manufacturer
crack in front catalytic converter.
going to replace. oh joy.
Amazingly, the car was running better than we can remember in a long time, right before it happened.