hi paul welcome to the club I have owned a 2.7d S type and 2 x 3.0d 'S' XF S type was good with the smaller engine and felt that with the extra weight that I would go for the 3.0 when I bought the XF great engine with lots of power great mileage on the 3.0 drove to Southampton from Scotland last week and averaged 52.1 MPG at average speed of 68 MPH over the 440 mile drive and that's the 275BHP engine as for problems only thing that I have had is the restricted power light on limiting the speed to 40MPH can't remember if it was the intercooler or CAT as for spec had a premium luxury and a portfolio not much between them would recommend the 3.0TD the S if possible spec not that important cheers whisky