The displayed range is a guess at best. It's all dependent on what temp of the battery is, use of climate control, what kind of driving you do, terrain, traffic, speed, etc. The car's computer generates this value based on past driving ... the meter is called a "guess-o-meter" ... lots of links of ...
Don't remember anybody else posting this problem here. Could be lots of things but your brakes are too important to go on guess work. You need to have the car looked at by a dealer.
As European users don't seem to have this "cold start" problem, I doubt that the Outlander is the source of any pollution claim. Also whilst very successful, Mitsu sales are eclipsed by the Prius - most models of which continually go through an ICE stop-start cycle in urban traffic.
According to the manual for my 2014 car, the PHEV starts to do strange things if the ambient temp is above 45c or below 15c - so at MINUS 20c (and below) it might not be a fault but "normal" behaviour.
I have a 2014 3h with 50k miles. Don't get a 3h if you want to keep warm in winter but don't want to burn petrol to do so. I've had the motor mounts done and would expect any high mileage car to have been done as well - you can hear a distinct clonk if they haven't or need replacing again. Although ...
In the "old days" - well 2014, when this all kicked-off - there was a lot of discussion, user testing, technical & scientific evidence about this issue. As I remember there were graphs to demonstrate where the semi-mythical sweet spot is. If readers want to plough through 7 years of mainly inconsequ...