Engine noise when turning off
Thread Starter
Junior Member
Joined: Aug 2005
Posts: 22
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Engine noise when turning off
Since I wasn't able to find any pertinent thread addressing the engine noise I have been hearing, I wanted to inquire if any c230 (V6) owners have heard a clunk-clunk noise from the engine area when the motor is turned off. It sounds like metal on metal contact. It's clearly audible when the motor is turned off in a garage. My first guess would have been exhust related: something loose or making contact with perhaps a heat shield when the engine shakes a bit but an underbody inspection of the car has revealed no probable causes. At no other time is the noise audible. The vehicle has only 1800 miles and I'll have the dealer examine it at the time of its 1-3k inspection, but wanted to see if anyone had any insights or similar observations. And as far as I can recall, the car has done it since day one.
Senior Member
Joined: Jun 2005
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From: NYC
BLACK 05 C230SS
My 05 C230 sometimes has a clunk noise on shut off but its the exhaust making its last puff I believe. Only happens on a long trip or so.
You really need a few people around to listen carefully of the noise and make sure its the engine and not the exhaust. If you believe you have engine problems than you should go to another dealer or MB mechanic to take a look.
You really need a few people around to listen carefully of the noise and make sure its the engine and not the exhaust. If you believe you have engine problems than you should go to another dealer or MB mechanic to take a look.
Super Member
Joined: Mar 2004
Posts: 917
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From: michigan/ohio/indiana
2013 c300 4matic, 2002 c240
mine makes a sad noise like a long sigh and i have the feeling that i can hear my car saying, ' please don't stop driving me even though gas is $3.50/gallon'
