Hi Richard   I am also new to the forum having taken delivery of a 3.0l diesel XF at the beginning of May.  I am also new to Jaguar , however over the past three weeks the smile hasn't left my face , today I did a 140 round trip to Perth and returned over average 40 mpg.   There is so much power I think you will be putting the Sorento out to pasture.    I hope that , if you go for the Jaguar, you will be as pleased as I am.   Thanks Brian