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      07-22-2014, 03:56 AM   #1
ChiCityN20
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Is idle sound of the s65 always loud?

Hey guys, today I went to check out my first m3 for purchase! I was stoked, it was an Alpine White 09 6mt with 52k miles and one owner. Unfortunately the car was not good enough. It had dents, a cracked tail light, scratches, curb rash. Dirty mats. I was not going to buy it regardless. But my question is, when the car started up the engine noise was loud. Not like the rod bearing video. But almost as loud as like a diesel semi truck. Is this normal? Again this is my first m3 ever. I didn't drive it, my father did because I don't know how to drive stick yet. He said it was smooth but he thought the noise was loud as well. For comparison my 04 g35 with 85k miles' engine was quieter. And the g35 has a louder exhaust for sure. We drove it for a bit and we came back and it was still as loud. I didn't take any videos because I was so mad that the car had been not kept well. Any help would be much appreciated
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      07-22-2014, 07:56 AM   #2
Golddots
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Yes it is normal. It is much quieter after a couple minutes.

It is the " cold start" idle and is even worse with an aftermarket exhaust.
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      07-22-2014, 07:58 AM   #3
Bill N
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I think it's an air pump forcing air through the exhaust to reduce cold start emission readings (though, of course, not cold start emissions!).
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      07-22-2014, 08:16 AM   #4
Rupes
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Hell ya it's loud! That's the best part. The sound isn't coming from a fancy exhaust system either, that's all coming from the engine compartment.

Enjoy your soon-to-be exotic car experience at a less than exotic price.
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