i have towed a coachman laser which weighed 1650 kgs fully laden with absolutely no problems with my galaxy tdi 130 which has the six speed manual box. i have never towed with a galaxy auto but i do know of one that was on rent to the company i work for, we used it as a staff bus whilst our usuall one was off the road it was running 24 hours a day continually around manchester and lasted about 4 weeks about 8000 miles before the gearbox overheated one day and was as the hire company said totally knackered. i would stear clear and stick with the manual, its a cracker.