Hi all
I bought a C350 d Estate and when I start the engine, it sporadically makes a loud revving noise like a motorbike is going past. It does not do it all the time, and doesn't seem to do it after any particular journey or run time.
Video of sound below:
If you have any ideas, please let me know.
The vehicle has not been modified to my knowledge, and does regular long journeys.
I bought a C350 d Estate and when I start the engine, it sporadically makes a loud revving noise like a motorbike is going past. It does not do it all the time, and doesn't seem to do it after any particular journey or run time.
Video of sound below:
If you have any ideas, please let me know.
The vehicle has not been modified to my knowledge, and does regular long journeys.