Hi Chris,
I have been following the Mitsubishi PHEV forums for past 12 months or so, from what I can gather the only owners to obtain 80/100 mpg are those who do short journey virtually on electric only were as the Toyota RAV4 is just jump in and drive, no electric leads plus a big boot, however, both have their own version of the CVT gearbox, from what I have read both are nowhere as bad as the smaller engine Toyotas.
At the moment I am just trying to get my head around all this new technology, from the outside it would appear the RAV4 now has a far better engine and hybrid system than the previous model and far superior it all respects to the Mitsubishi PHEV, it would appear the only advantage the Mitsubishi PHEV has is it 28 mile electric only range. In an ideal world I would love a Toyota RAV4 PHEV, but they do not exist, maybe some of up and coming PHEV can fill that void in the market?.
My problem is I tow a caravan, at present the only electric car capable of towing a caravan is the Tesla, but even the Tesla has limitation, it is limited to 100 miles too protect the motors.
Unfortunately I have suffered a brain injury and occasionally I get confused and often say the wrong thing.