We've got a 2008 XC70 that does very well towing. I should distinguish this is a much heavier and more tow-worthy vehicle than the 5 cylinder XC70s. They are nice cars but conventional wisdom is, they are hardly well enough engineered to tote themselves around, much less additional weight.

The 2008 has a nice short first gear in the automatic to get going. It tows our 2500-3000lb ski boat without the last sign of stress. It tracks straight and the huge disc brakes easily stop the rig. It is a breeze. At least, my seat of pants estimation is, the 2008+ is a great tow vehicle.