Hi all, just had my D3 at Ritters for a service and to get to the bottom of these vibration, clunk issues. Pleased to say all is good. Had the auto flush and new pan done, as it has 110000kms on it now. But also before sending it to them, spent some time under it checking things out as per advice below. Found the front left axle had some movement in it. Ritters confirmed this, pulled it apart and found it worn and lacking grease (sealed for life). New axle ouch. But I tell you the car feels like new. No clunk, no vibration under load, smooth as silk. Very pleased with the outcome. Hip pocket a bit sore though. Happy ending thankfully, the car fells better than when I bought it 12 months ago. Hip pocket