We've had a 2006 Subaru Outback SE 2.5 automatic for 5 months - towed about 800 miles so far - best towcar we've ever had.
Kerbweight is 1520kg, towing limit 1800kg, noseweight limit 82kg.
Solo mpg is averaging 27mpg, towing 1250kg gives 21mpg.
Set the cruise control to 60 and towing is effortless, even on motorway gradients - handled 70+ a couple of times during overtaking without any drama.
Self-levelling rear suspension means that load and noseweight have no effect on attitude, or stability.
Everything just works, and looks as though it's designed to go on for ever - the worst feature we've found is the interior light is over the back seat because of the large twin sunroofs so it's dark to get in the front at night - we're both delighted with it.
New Outbacks are available with diesel but only as a manual initially.
Anything else you need to know?