EV Mode or HEV Mode?

[BoJoUK]

I would be obliged for any guidance given.
I have now done about 2750 miles since getting my HS PHEV and because virtually all of my driving is less than 75 miles, I run the car in EV Mode. So far I have averaged about 300 MPG (only because virtually every journey is small and I have only ever put petrol in it once and it still has 58% petrol left in the tank).
I am soon going to be away for a few days and won’t have the ability to charge the car up, SO, should I leave it in EV Mode and let it start the engine when it gets down to 0 miles, OR, should I switch it to HEV Mode for that journey? So far I haven’t run it in HEV Mode at all.
Your thoughts and guidance would be greatly appreciated.

 

[Enshnk]

You should start with hev mode. If it completely drains the battery and switches to gasoline, it will consume more gasoline and limit your speed.

 

[davewins]

Like you, most of my journeys are under 75 miles and are able to charge at home. However, I do a trip a couple of times a month which is around 265 miles round trip with no ability to charge whilst I am away. I'm currently trying just leaving it in EV mode, so the first 75 miles are electric. In reality as this is motorway driving it is probably more like 65 to 70 miles of electric, and it automatically switches over to HEV. On that trip of around 133 miles, it will use the first 70 miles of electric, switch to HEV and charge up to about 9 miles of battery before it switches back to EV mode and then when it gets to 0 it switches back to HEV and starts again. What I find is that when I get to my destination, there's usually 4 or 5 miles of electric available - more than enough for pottering around town etc. That journey usually ends up with an MPG of 48ish mpg. On the way back home on the same route it will use the remaining battery and start the cycle of HEV/EV again. That journey is usually about 42mpg. The next trip, I will try on HEV for both legs and see what the results are.

 

[BoJoUK]

You should start with hev mode. If it completely drains the battery and switches to gasoline, it will consume more gasoline and limit your speed.

Thank you very much for your advice, it is greatly appreciated.
What you have said makes good sense, so I will do exactly as you suggest and then revert back to EV Mode when I get back home.

 

[BoJoUK]

Like you, most of my journeys are under 75 miles and are able to charge at home. However, I do a trip a couple of times a month which is around 265 miles round trip with no ability to charge whilst I am away. I'm currently trying just leaving it in EV mode, so the first 75 miles are electric. In reality as this is motorway driving it is probably more like 65 to 70 miles of electric, and it automatically switches over to HEV. On that trip of around 133 miles, it will use the first 70 miles of electric, switch to HEV and charge up to about 9 miles of battery before it switches back to EV mode and then when it gets to 0 it switches back to HEV and starts again. What I find is that when I get to my destination, there's usually 4 or 5 miles of electric available - more than enough for pottering around town etc. That journey usually ends up with an MPG of 48ish mpg. On the way back home on the same route it will use the remaining battery and start the cycle of HEV/EV again. That journey is usually about 42mpg. The next trip, I will try on HEV for both legs and see what the results are.

Thanks for your reply and thoughts. I will be very interested to hear how you get on by doing the comparison.

 

[decrep]

I have a mate with an HS PHEV. He says he does long motor trips.
He says that he's found the best results by using the battery to get up to speed, then using the ICE motor to cruise. Forget his explanation, but it sounded good at the time.