To date we have covered 4428miles since collecting the Outlander PHEV 18th June last year, including towing a caravan our total fuel cost including electric £328.54 which equates to 106mpg.
The trick on the motorway try to start of will a full charge going to the daughter 72 miles average fuel 112 mpg the other day.
On the motorway let the battery deplete then use the charge button, all the excess energy from the ICE and regenerative braking will charge up your batteries, below 40mph switch off the charge and use electric, any advice just ask.
Unfortunately I have suffered a brain injury and occasionally I get confused and often say the wrong thing.