Hello, so yes, on my 2007 A3 sportback 2.0 140cv BKD, first DMF replaced under warranty at 69.000km, and now at 131.000 the symptoms of it being about to die start to show again. When I turn the ignition of, the engine shudders with a clonking rattle hard metalic sound just after it stops, the sound comes from the lower part of the engine bay. Is it safe to say that the DMF is about to die again (same symptoms as last time), or could it be the shut off valve acting up? If it was the DMF, can anyone recommend LUK or SACHS? I seem to remember that LUK had an issue with their DMF's. Thanks.