@kezo and yet driving on the motorway in HEV mode yesterday very much seemed to be a ‘charge’ mode, as it was constantly charging the battery. As I say, HEV mode seems to behave differently depending on whether you activate it intentionally (as I did yesterday), as opposed to when it kicks in during Auto mode when the battery depletes (as previously). Presumably your long term 50mpg is calculated using the pence per mile method including charge costs? If so, that’s encouraging. I’m tempted at some stage when the EV miles have depleted to fill up with petrol and run the whole tank in HEV mode with no charges whatsoever to see what the mpg is. That would be the only scenario when the mpg as shown in the car would be correct!
When Ive used HEV mode button, the battery seems to hover/hold the battery charge at around the charge %, I initially switched to HEV mode, rather than charge the battery above the % initally switched to HEV (if that makes sense), rather than charging the battery as it does using charge mode on the Rav4/Across.
I have changed the settings to show the rev counter, rather than the eco guage thingy, as I can see more easily what is hapening. Even in HEV mode, the car is still behaving as a hybrid vehicle but obviously less so and perhaps more like the Tucson HEV or any other hybrid, yards rather than miles before the battery recharges.
My earlier comment showing the mode’s and 50mpg/35 mile electric was taken from Fleet New’s long term test prior to it joining their fleet, however it based on the prefacelift which is irrelevant and if you dig in their site you can see they use the same tunning cost calc’s as we do.
https://www.fleetnews.co.uk/cars/reviews/hyundai-tucson-plug-in-hybrid
As for me I’m still getting 34/35 miles electric locally and 38+ miles on a run and over 1800 miles my longterm average is now 54mpg but, will climb now daughter back in school.