Hello together, I drive a 2007 D5 2.4 185hp automatic. Unfortunately the vehicle roars during the ride at approx. 1800/1900rpm when slightly accelerated. From approx. 2000 RPM it is gone… It is a loud roaring noise no vibration or unbalanced recognizable. I have prophylactically replaced all 5 engine bearings and tested the undersruck system. (This is i.o.) Unfortunately it did not succeed. The noise is only reproducible during the ride. It is not in stand and also when driving on the stage is not coming. (On stage all 4 wheels turn) Flex tube is intact. Unfortunately, the ideas run out. One possibility would be the vibration damper of the cardan shaft. The Volvo dealer meets unfortunately different statements. At first appointment with direct acceptance/test drive the master said: that is annoying, would disturb me too. 1 day later it was said. You hear nothing it is all normal nothing untypical. Maybe you have a tip for me? Or there is someone in the stage Close to Augsburg which knows if this drone is normal for the D5