I decided that that it was time to see what happened to our petrol consumption and how much we could recharge the battery over about a 30 mile round trip.
We used all the regeneration we could as the journey has some hilly areas. What seems to happen is that the computer still takes advantage of the EV charge on uphill areas and augments the petrol engine.
During regenerative breaking with the engine running there are definitely more KW added to the battery quite quickly. We didn't keep the charge button on all the time. The EV moniter showed we had been driving in EV for 55% of the journey.
We arrived home with approximately the same 27 miles available in Ev Charge. The car was doing about 39.6 miles per gallon while charging the battery, and our aggregate score had dropped to 78 miles per gallon!
What would be easier is to calculate kilometres per litre, as that is how we buy fuel. I suppose Mitsubishi thought that it had better keep all the mileage stats in imperial. I will look at the manual and see if there is a way to reset the gauge to kilometres. I doubt it as the odometer is in miles.
We had an Eco score of three leaves out of five for this trip.
My husband drove on the outward journey, and I drove the last ten miles at a slightly lower speed of between 40-45 mph and 20-30 in small village areas. This definitely made a considerable difference to the charge dump into the batteries.
It's difficult to know exactly how many litres of petrol were used today. I am hoping when we get the app that goes with the car, we can analyse this data as well.
The reason I decided to try this today is that it is very awkward, (although not impossible) to manoeuvre the car behind our house where the best spot for charging is at the moment.
However there is still extra mileage to consider that offsets these figures, as for the short trips to the village and back there will be no need to use the Petrol tomorrow.
I did achieve exactly what I wanted, with this trial. I just can't put a definite figure of cost on the amount of fuel we used. I am guessing around two litres, perhaps a bit more.
At 95p per litre, That's £1.80 for our journey, and 27 miles worth of EV left in the battery for later. We started out with 26 miles of EV, so that cancels out the banked electricity cost and leaves us with using about two litres of petrol!
With a completely full charge in EV we did a 22 mile round trip on EV alone, that charge cost us about £1.30. This used the full capacity of the battery as we were doing the hilly journey.
I estimate it is about 10-15% less efficient to use the charge button to charge the EV batteries than charging with the PHEV plugged in.
Also depending on how your electricity is generated, depends on the actual emissions. The PHEV even in petrol mode does have low emissions, but if your electricity comes from fossil fuel generation it does not relay seem as clean an option.
What would be amazing is to have a 4 KW solar panel array fitted to the house to use for charging the car and offsetting the household energy consumption.
I simply can't justify the expense of this, as solar panels are still expensive and not as efficient as they need to be to make them really viable. Also the feed in tariffs for any surplus energy capacity are too low to make it a worthwhile offset to the expense of putting them in.
Perhaps with the next generation of PHEV, there may be an option for plugging it into solar panels on DC. I am sure this would be more effective and use less energy than putting it through a converter and back to DC.
It would be easy to have a mode box that either feeds the car charge port on DC or feeds the house/feedback tariff with AC.
Depending on your unit cost of electricity and pump price for petrol this would change your cost per mileage, however the PHEV is still outperforming the Chevrolet Captiva we used to own hands down, even doing an expensive trial run today!
What is noticeable is how our driving style has changed, and we are using any opportunity to get regenerative breaking. We don't have to rush anywhere round the area we live, and I find I am seeing much more scenery and enjoying the countryside and spotting the wildlife.
I can can see our slower pace is irritating for French drivers, but we are simply staying in the speed limits called for in villages, and keeping to about 45-50 on the country roads between towns. Keeping a good distance from the car in front also gives opportunities for regenerative breaking coming up to traffic lights and junctions.
I would love to try doing a treasure hunt/ rally with this car over all sorts of terrains to get points for low fuel consumption over speed and handling. There are definite tactics to getting the best economy out of the PHEV. Well not our Nice new PHEV, I would do it in one provided by MITSUBISHI as a trial against other SUVs in the same class!
I still think an aggregate of this journey at 78 miles per gallon unbelievable. I definitely need to get the app!
Beats playing Pok é mon!