Not impressed with the mpg, spent a couple of days at our caravan, a journey from the West Midlands to north Wales with a good mix of urban, motorway, 70mph A roads, 60mph A roads and up and down hills. The car display said 42.6 mpg, I filled the car up before leaving and again on return, 24.17 litres for 216.6 miles, so 216.6 miles divided by 5.32 gallons equals 40.71 mpg so the car display is not faulty as I at first thought it was.
I’m sorry to hear about your disappointment @Marc but have to say that I’m not surprised. Hyundai don’t seem to have this hybrid malarkey nailed in the way that some other manufacturers have. As I mentioned some time back, I had a Tucson self charging hybrid on a 24 hour test and was surprised that on regular runs that I make it was delivering worse mpg than our BMW X1 2.0i 4WD Auto, which had no hybrid technology at all (but was incredibly economical for a quick car – and the engine was super smooth and whisper quiet compared to the Hyundai).
I spent the first 6 months manually calculating the MPG on our PHEV. Many PHEV drivers quote the mpg on the dashboard, which is incorrect as it takes no account of the cost of the miles driven in EV mode (an issue that you don’t have with yours). It depressed me as it was so disappointing, especially on longer runs mostly on petrol, so I stopped doing it and have felt better since!