When accelerating, there's a rather rorty noise, seemingly from the nearside front of the engine compartment (I have only heard this from inside the vehicle), as if of a blowing exhaust. The exhaust pipe is OK, however. Any ideas what it might be? It does not happen on the over-run.
I had a brand new Berlingo hire car in Tenerife last year, 1.9 diesel. It too had a noise like this, so I popped the bonnet and couldnt see anything. Performed fine for the 2 weeks we had it, can't be certain but it could be a "characteristic'??
possibly a down pipe to manifold issue, these usually have a compressed steel o ring between the down pipe and the manifold, the engine movement under accleration may cause the gasket to blow however lifting the bonnet and reving it up will not reproduce the same effect as the engine rocking on take off/accelaration