I seem to have a hole in my exchaust. When the car is cold everything is fine, after a few minutes you can hear it. I have checked and could not find anything. The whole exhaust loos like new.
Anybody have some pointers were I should check.

Thanks

Get a friend to plug the exhaust with some rags while the engine is idling.
You look & listen under the car.
Should be able to see the leak.

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2007 C 230 Sport.

Check at the double skin where the downpipes merge ,they usually corrode here and isn't obvious as it's only the inner pipe which rots.
Geo.