2025 hs PHEV EV Mode

[Lawrence Sabin]

Hello all.
So I am now on my 2nd HS PHEV in 2 weeks of ownership.
The first car was replaced by MG as it had a transmission fault.
I picked up my replacement this Saturday 19/04/25 and now appear to have another fault with this one, and would like to know if anyone else is experiencing anything similar.
When in pure EV mode, no heaters turned on and was on 100% charge when I first noticed this.
The fuel is also being used as well as battery, for example I have done around 18 miles this morning and fuel range at the start was 179miles and battery was 72miles.
When I got back I had 163mies left and 63miles electric.
Whilst driving I temporarily put it into GeV mode and when I came to a std still the engine was ticking over at 1400rpm which seems high to me.
Has anyone experienced anything similar.
I am getting weird of this model now and considering asking the dealership to take the car back.
2 cars in 2 weeks both with faults.

Thankyou
Lawrence

 

[Jto]

I think you need to get used to the car before saying that this is a fault, what is GEV mode and what does it do or do you mean HEV.
I also suggest you look at page 157 in you user manual and that will answer you question why you used fuel.

 

[aerofurb]

The 2025 HS PHEV is unlike most other PHEVs - it can operate as a series hybrid or parallel hybrid. Google the terms and you'll get a better understanding as to how the car works.

Given ICE or EV ranges are guesstimates based on how the car was last driven - and it will update as you drive - even the ICE range changes when operating in EV mode only.

Any range given by a car be it ICE or EV has to be a perceived range. If you go and drive it very gently, obviously the consumption will be less than if you cane it away from the lights and sit at 70 mph into a 30 knot headwind.

As for the 'tickover' speed, for the most part, the ICE appears to operate as a range extender, ie charging the battery - it isn't driving the wheels directly in this case. You'll often see it staying at 1400 rpm, even though the road speed is changing. What it is doing is warming itself up.

The heater/aircon is electric, it does not use the ICE for this.

May I respectfully suggest you sit back, have a Google about the car (more info online about its sister car the Roewe D5X, go for a nice drive in an excellent car and..... relax!

 

[Lawrence Sabin]

I think you need to get used to the car before saying that this is a fault, what is GEV mode and what does it do or do you mean HEV.
I also suggest you look at page 157 in you user manual and that will answer you question why you used fuel.

Sorry meant to read hev ( hybrid mode).
Not sure about getting used to car first as surely running in electric mode only it shouldn’t use any fuel especially as no heater/air con was on and didn’t need any extra power.
The previous car that had the transmission fault didn’t use any fuel whilst in electric mode.
To use 20 miles of fuel and electric range to do around 18 to 20 miles can’t be correct.

Lawrence

 

[Jto]

If you moved out of EV which said you did the engine may be used, staying in EV you may have not used the engine but the car decides if the engine is need or not and will cut in as need in ether mode.
You did 9 miles on electric and the rest on petrol and depending how you drive the petrol wil go up or down. Example drive at 30 mph then the petrol range will go down, if you move onto a faster road and did 55 mph the range will go up as you will use less petrol at the faster speed.
So you need time to get to know how the car works. When you stopped the car was in HEV then the engine would run at a faster tick over.
I had a 21 plate HS PHEV and could when the battery was under 80% make it charge the battery and tick over would be higher. But doing this you will use more petrol, to me there is nothing wrong with the car by the sounds of it. I would use EV all the time and let make the decision to change over.

 

[Lawrence Sabin]

Thankyou everyone.
I drove it again this afternoon and at no point did the engine cut in ( zero rpm at all times) and still fuel was used or should I say the fuel range went down at roughly 1 miles less for every 1 mile covered as also did the electric range.
So as far as I understand for example I did 9 miles but 9 miles of fuel was used and also 9 miles of electric, this doesn’t seem correct to me.
Thank you all
Lawrence

 

[Jto]

Simply you said did 18 miles and started with 72 miles then on stopping you had 63 miles = 9 miles of electric used. Petrol 179 miles then on stopping 163 miles = 16 miles how did you use 16 miles of petrol on a 18 miles journey.

1 hard right foot
2 low speed journey
3 stop start journey
4 car engine changing the battery
All of the above would lower the petrol range as you will use more petrol. When you do a long journey at speed you see the range go up. You did not use 16 miles of petrol yesterday you many used 9 miles but the type of journey you did reflect in the range read out. You definitely did 9 miles of electric driving. You asked the question any one experience and have 3 years and tried to give you that the best explanation.

 

[Lawrence Sabin]

Thank you for your reply.
I’m not trying to pick fault with what anyone is saying.
What I can’t understand is when the vehicle is in EV mode and the engine has not cut in which is evident by the instrument cluster not showing HEV or not showing any rpm, then how is it using fuel?
I may have rounded up or down miles on my example however I just can’t see how fuel is being used.

If understand that the engine may cut in at times to help out but the battery was pretty well charged and nothing on the cluster indicated the engine running.

Thank you.
Lawrence

 

[Jto]

It’s not using fuel you seen that, but car looks at you driving the type of road you are on and works out how much range you will get from the fuel in your tank and then changes the read out on the dashboard so you know the range. But you have not used a drop of fuel

 

[Lawrence Sabin]

Thank you.
So if I understand what you are saying.
Although using battery only the car adjusts the range of both the fuel with the volume of fuel it has based on the type of road and how it currently driving, but hasnt actually used any fuel and therefore has the same volume of fuel in the tank? It is and also adjusting the battery range obviously as thats what I’m using.
Thank you for all your help explaining this.
Regards
Lawrence

 

[Jto]

You got it