Check out the guy on utube towing 1300kg camper with Outlander PHEV. Didn't watch whole thing yet bit pieces I've seen are positive. 60 mph and still electric.
Not a lot of details, very end states 195 mile trip, 6.25 gallons 52 mpg imperial I think.
another review
Makes me wish I could have waited instead of getting the wife the Rogue in December.