Hi! I got a brand new DS4 a week ago, a 1.2 Puretech. There is a strong smell of unburnt fuel inside the car when in stop/start traffic, which goes when driving faster. On lifting the bonnet, it seems to be coming from the Turbo. The Citroen dealer has said it could be because it's a new car (lack of carbon deposits), but we've now done over 300 miles and it's still just as strong. They checked it over and said they can't find a problem. Surely it's not right? Has anyone else had this issue, or could anyone suggest what it could be?Thank you!