Mercedes-Benz Catalytic Converters

All About Catalytic Converters for Mercedes-Benz

The catalytic converter -- "cat," as it's sometimes called for short -- has a critical role in the exhaust system of a Mercedes-Benz vehicle. Think of it as a special type of filter; what it does is capture and contain the harmful emissions the engine produces when gas and air get burned up during combustion, ultimately reducing how much of them get into the air around us.

How a Catalytic Converter Works

Bolted to the underbodies of vehicles, sitting between exhaust manifolds and mufflers, cat converters contain precious platinum-group metals such as palladium and rhodium. The metals help break down noxious gases into oxygen, nitrogen, carbon dioxide, and water vapor. The nitrogen remains trapped, while the carbon dioxide, water vapor, and oxygen get released through the exhaust pipe and into the atmosphere.

Signs the Catalytic Converter in a Mercedes-Benz is Going Bad

Even a high-quality cat can fail, if it doesn't otherwise end up damaged during an attempted theft for its valuable metals. Either way, federal law requires that your converter be in top shape to help cut emissions -- so it's important to know the symptoms of trouble with one in order to act quickly and fix things. They include:

• Worsening acceleration
• Engine underperformance
• The smell of rotten eggs
• Loud noises from under the vehicle when you speed up
• Excessive heat coming from the undercarriage
• Higher and sometimes darker-colored exhaust emissions

Notice any, and you'll need to replace the converter, based on what an inspection's results recommend. (If you need help with the job, get in touch with a Mercedes-Benz dealer to schedule a service appointment.)

The Average Cost of Catalytic Converter Replacement

You might be looking at paying anywhere from $2,280 to $2,430, by recent RepairPal estimates. That's most often pricing for replacing cat converters in economy cars and SUVs, though. For a luxury model like a Mercedes-Benz, costs might be somewhat higher; changing one in a Mercedes-Benz C 300, for example, might run $2,485 or more on average.

Shop Genuine OEM Catalytic Converters Online at Mercedes-Benz USA

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