On the parkers site, it says, our audi could pull 1.6ton and vectra 1.3ton, but the thing is, will it pull the caravan up hills ok without the temp gauge rising too much. Theirs a killer of a hill for cars in wales called Dinas Mawddwy. The hill is a few miles long and it gets steeper as you go up. In our citroen xm 2.5TD we had, if there was no traffic we would get a run up at about 70 - 90mph then just before the tight right bend, just before the top of the hill your crawling at 30-40mph in 2nd -3rd gear. Not sure how well our audi handled that hill,, but dad went up it towing the caravan in the audi, and apparently it pulled the caravan up it fine. But Im guessing the vectra wont like it much?