Paul
We've got the previous model - a 2 year old 320d Touring manual gear box which we had from new. We towed our Bailey Ranger with no problems and got around 30-32mpg. Solo on trips, 55+ if you stick to 75.
Ours is 150bhp and the new one I understand is 165, so more power. Plenty fast enough for me.
Watch out for Golf drivers - they love trying to race, but I ignore them!
Best car we have had and came with a 3 year/60k full warranty but also with 5 year/100k free servicing, but don't know if this is available on the new model.