You really need to be looking at SUVs with a 3,500 kg towing limit - judging by their comments on an international forum, the VW Touareg copes reasonably well with Australian caravans which are heavier than UK/EU ones AND need a 10% noseweight - although they have complained that the Touareg's noseweight limit has reduced from 350 to 215 kg over the successive models.