Ron1949 wrote: ↑
Thu Jun 10, 2021 4:57 am
I have a question that is driving me crazy,
Which is cheaper?
(1) Charge my hybrid vehicle at a charging station 35p a kw
(2) Charge my vehicle when on an open road using the car charge button,
petrol prices £1.22 Lt = £5.55 UK gallon
In answer to your specific question, you need to convert both to Pounds per mile.
The PHEV uses about 500 Wh/mile (ie 0.5kWh) according to this page https://ecarsrange.com/mitsubishi-outlander-phev/
1. on Electric 35 * 0.5 = 17p per Mile
2. from that webpage the PHEV does around 50MPG on a flat battery however it is really around 33MPG , so £5.55 / 33 = 17p per Mile
So running on Petrol is about the same at 17p vs 17p on electric.
Using the Charge button only really makes sense if you NEED to drive in EV mode in London CBD, otherwise it is just another energy conversion which generally involves losses. Having said that, using the Charge button carefully ONLY when you are doing over 65km/h (ie ICE is driving the wheels directly in parallel hybrid mode) is slightly more efficient than using the ICE below 65km/h in series hybrid mode. However that only works if you remember to switch charge on and off as you change speed above and below 65. If you don't want that hassle, just drive with the battery "empty" (the PHEV tries to maintain around 30% charge so no need to stress that the battery is totally flat as it isn't)