Hi, I have had my XF 2.2 diesel for just over 4 years and never until today experienced any faults with it. It has covered 40,000 mile and been dealer serviced from new. It was last serviced in March 19 and hasn't covered many miles since service. I had driven around 50 miles yesterday and was stuck in a queue of very slow moving traffic when I could smell fumes inside the cabin. Initially I thought it was exhaust from the car in front but shortly after that I noticed a smoke coming from the gaps around the front of the bonnet. When I got an opportunity to stop away from the traffic I had a look under the bonnet but could see nothing out of sorts. The fuel was quite low at the time but I can't see why that would cause an issue. The drive home went fine and I didn't notice the smell again. I filled the car to max today and had a short drive and although I haven't seen any smoke today I did feel there was a bit of smell still after parking. I wondered if anyone could shed some light on this or has had the same issue, thanks in anticipation.