As Glos pointed out correctly, you don’t really charge your PHEV on journeys, the intent is to either drive it within the electric range and charge at home, or use the petrol engine. Now of course Glos didn’t mention that it’s HIS PHEV in particular that is awful on petrol: ours does 55mpg on petrol alone despite the added weight, we have an EV tariff and a home charger, and can do a lot of our journeys in electric mode only – we only refuel once every 2-3 months, for around £50 (Momentum). The average recharge costs us a whopping 63p for roughly 32 miles of range average.
My view is as electric-only ranges continue to increase, 70-90 miles are currently achievable, as are charging speeds increasing at both the maximum AC rate and into the DC range depending on the PHEV in question. It’s becoming much more practical to charge on the go and have a decent chunk of range in as little time as a piss stop.
Hyundai/Kia missed the trick here when they facelifted the car last year; as such, it remains the lowest range of its main competitors. That said, I see a calculated 47 mpg on a hybrid run. In defence of @Glos-Guy, he doesn’t use any regen settings.