Car went to dealer today to investigate exhaust rattle that I thought was coming from the rear? Turns out it was the front exhaust mount making the noise! Dealer contacted Fiat Technical Dept who advised greasing the mount. Have been told to monitor and if the rattle comes back it would be replaced. Car is nice and quiet now . Other fault was the 500 seat logo peeling away from drivers seat, Fiat agree it should be replaced under warranty so waiting for seat cover to arrive? On a side note I have a dashcam fitted and it recorded everything that happened when the ignition was left on so I got to see two test drives looking for the rattle, work going on in the workshop and even the car being washed. I don't think the mechanics knew as I heard him singing and commenting on the good throttle response! They also did a couple of updates on the Ecu,radio and aircon. Well pleased with work done.