As many of you know I have had the CAT and DPF removed from my Captiva. I am just back from a holiday in Blackpool. My MPG for towing was 26.2,the computer told me it was 33.6. I was towing a Bailey Olympus 624 twin axle. The Bailey is 1650kg and is 7.4m long, plus in the car there were 3 adults and my labrador. I am happy with this. Most of my towing was done between 50 and 55 MPH in cruise and in 5th gear. PS. when solo my computer usually shows over 50 MPG on runs, if I drive with a very light foot over 60 is possible when away from town.