So, I've had my PHEV for just under a month now.
Very happy in general. Only 'issue' to me being the cubby space and the low depth of the centre console (my Lexus had a very high one, and with little places to put phones etc).
As for economy.....
I charge most nights at home.
I drive to the office 4x a week. It's 25 miles away, so do prob 70% on EV in the morning, and mostly petrol/hybrid on way back. The mpg on the way to work is irrelevant due to the bias towards electric - last time I checked it was saying 450mpg or something ridiculous.
On the way home from work, it seems to average around 35mpg. I don't try and drive in a particularly 'eco' style, although am no boy racer.
In amongst these trips, I have done a few 150 mile round-trips. Most of these journeys have been on fast dual carriageways, and have been using a mix of hybrid driving and periods using the 'charge' function, so I can glide silently when in built up areas.
Mostly drive with heating/cooling system OFF, but do use it under more extreme conditions (ie. very cold nights, or very sunny days which heats the car up)
Overall (all the above) trips are so far averaging out at 47mpg
Considering my Lexus hybrid would hit around 50mpg during winter, and my prior Ford Kuga (diesel SUV) would do around 40-45mpg, it seems pretty comparable.
I am getting about 410-420 miles to recent tanks, although it does seem a little variable and can be less depending on my charging cycles. This is about the same as the Lexus, which has the same sized tank.
Obviously, none of the above is scientific at all and I still struggle to understand the optimum approach to economy. But my key metric when selecting the car was not having a significantly worse economy on average to my outgoing Lexus hybrid, and it seems to be delivering that.
I am envious of people who live nearer their work though. On weekends where I'm not travelling around but popping out to shops, it is great to use zero fuel