At the risk of annoying some members (Potential Range)

[Mark Holmes]

Simple question and I’m not claiming the actual mileage has increased....., but has anyone else had their GOM show an increase of ‘’Potential” distance following the updates. Mine always used to show about 178 miles of range after a slow charge (on ECO and everything else off), but since the update mine still shows over 200 miles (on ECO and everything else off). Now I not claiming the extra distance as it seems to drop quicker, but I worried the updates have messed something else up. After the update my “Potential” range whet to 218 miles and now it’s down to 208 miles, but my battery charge light used to come on at 42 miles and now comes on at 55 miles. Simple question has anyone else suffered this problem as since the update I’ve completed over 700 miles on mixed roads and it’s still not settled down to where it used to be..
Realistically I’m still getting about 165, but it’s annoying as it’s misleading...
I’ve reset my mileage and I’m averaging 4.2 miles per KWh, I do drive efficiently...and always in ECO with everything else off, fans, aircon and heating. If I want heat I use the seats and for air I use the roof or windows.

 

[Nibloprice]

If the weather is nice where you are, that will play a big difference. Without changing driving style between the latest two weekends, last weekend driving at 10-15degrees i got 140 at a stretch. And this weekend at 20-25degrees I got 165 easily. Both on 60-70 roads. My m/kwh was 3.5 last weekend, and 4.2 this weekend. That sort of variation could well confuse the GOM, if it gets different temp variations every few days.

 

[Mark Holmes]

Get nearly the same regardless of the weather at the moment on the GOM, but then even after a cold day where the range would drop after charging the “potential” range is still showing these high figures. Is there a MG technician in the forum who can pass comment. Should I have this checked out or should something have been done when the updates were installed??
I’m confused as know else had really mentioned this or could it just be a glitch. I’d hoped that running the battery down and then charging again would have correct this issue, but it hasn’t.

 

[DangerousDoug]

We had the update just before coming on holiday, and have been poodling round the Yorkshire Dales, North Pennines and Lakes for the last two weeks. We're seeing per-journey average m/kwh in the 4.5 range, which is high for our car (used to be 3.5 before coming on hols) but our average speed is greatly reduced on these roads. Overnight slow charging produces a full "tank" indication of 158-160 miles. Car always assumes a m/kwh of 3.2 when setting out, which then fairly quickly changes to the actual measured consumption (in the high 3's to low 4's). I think we're seeing faster rapid charging (the two big charges we gave it on the way up here were running at 45kW, whereas I've only seen a max. of 35kW before (all on 50kW CCS chargers) so there may be an improvement in battery management with the comfort2 upgrades, but I don't think it's made a difference to consumption and range. I'm surprised your car shows a full "tank" range of 180-200 - I've never seen anything like that in our car, in the nearly 7000 miles and 6 months of ownership!

 

[Frank]

We had the update just before coming on holiday, and have been poodling round the Yorkshire Dales, North Pennines and Lakes for the last two weeks. We're seeing per-journey average m/kwh in the 4.5 range, which is high for our car (used to be 3.5 before coming on hols) but our average speed is greatly reduced on these roads. Overnight slow charging produces a full "tank" indication of 158-160 miles. Car always assumes a m/kwh of 3.2 when setting out, which then fairly quickly changes to the actual measured consumption (in the high 3's to low 4's). I think we're seeing faster rapid charging (the two big charges we gave it on the way up here were running at 45kW, whereas I've only seen a max. of 35kW before (all on 50kW CCS chargers) so there may be an improvement in battery management with the comfort2 upgrades, but I don't think it's made a difference to consumption and range. I'm surprised your car shows a full "tank" range of 180-200 - I've never seen anything like that in our car, in the nearly 7000 miles and 6 months of ownership!

Hi Doug,

The potential range you are getting when checking after a full charge (and it won't make ANY difference how the car receives this full charge, rapid, slow or fast or ANY type of cable associated with that charge) is correct (normal). I would expect on ECO Mode (forget checking on Normal or Sport) about 150-158 + or - a couple of miles here or there. When checking, turn your HVAC Button on and then off, you will see that a normal figure with the HVAC off after a full charge to show 170-178 again + or - a couple of miles here and there. I bet you have been checking the "mileage" with the HVAC on as I was doing for many months but thinking that the HVAC was off, when it wasn't. I like you wondered what I never got figures over the high 150s when checking in the morning. In Summary after a full charge you should show 150+ in Eco with HVAC on and 170+ in Eco with HVAC Off. How Mark,s shows 200+ I don't know but that does not mean he will get anywhere near that mileage.

Regards

Frank

 

[Mark Holmes]

We had the update just before coming on holiday, and have been poodling round the Yorkshire Dales, North Pennines and Lakes for the last two weeks. We're seeing per-journey average m/kwh in the 4.5 range, which is high for our car (used to be 3.5 before coming on hols) but our average speed is greatly reduced on these roads. Overnight slow charging produces a full "tank" indication of 158-160 miles. Car always assumes a m/kwh of 3.2 when setting out, which then fairly quickly changes to the actual measured consumption (in the high 3's to low 4's). I think we're seeing faster rapid charging (the two big charges we gave it on the way up here were running at 45kW, whereas I've only seen a max. of 35kW before (all on 50kW CCS chargers) so there may be an improvement in battery management with the comfort2 upgrades, but I don't think it's made a difference to consumption and range. I'm surprised your car shows a full "tank" range of 180-200 - I've never seen anything like that in our car, in the nearly 7000 miles and 6 months of ownership!

If I fully charge tonight I will post a photo

 

[Mark Holmes]

Hi Doug,

The potential range you are getting when checking after a full charge (and it won't make ANY difference how the car receives this full charge, rapid, slow or fast or ANY type of cable associated with that charge) is correct (normal). I would expect on ECO Mode (forget checking on Normal or Sport) about 150-158 + or - a couple of miles here or there. When checking, turn your HVAC Button on and then off, you will see that a normal figure with the HVAC off after a full charge to show 170-178 again + or - a couple of miles here and there. I bet you have been checking the "mileage" with the HVAC on as I was doing for many months but thinking that the HVAC was off, when it wasn't. I like you wondered what I never got figures over the high 150s when checking in the morning. In Summary after a full charge you should show 150+ in Eco with HVAC on and 170+ in Eco with HVAC Off. How Mark,s shows 200+ I don't know but that does not mean he will get anywhere near that mileage.

Regards

Frank

That’s the strange thing, why does it show it when it won’t do it, but it only happened after the update and that’s what’s really annoying as I’d like to know why of if something has gone wrong.

 

[DangerousDoug]

Hi Doug,

The potential range you are getting when checking after a full charge (and it won't make ANY difference how the car receives this full charge, rapid, slow or fast or ANY type of cable associated with that charge) is correct (normal). I would expect on ECO Mode (forget checking on Normal or Sport) about 150-158 + or - a couple of miles here or there. When checking, turn your HVAC Button on and then off, you will see that a normal figure with the HVAC off after a full charge to show 170-178 again + or - a couple of miles here and there. I bet you have been checking the "mileage" with the HVAC on as I was doing for many months but thinking that the HVAC was off, when it wasn't. I like you wondered what I never got figures over the high 150s when checking in the morning. In Summary after a full charge you should show 150+ in Eco with HVAC on and 170+ in Eco with HVAC Off. How Mark,s shows 200+ I don't know but that does not mean he will get anywhere near that mileage.

Regards

Frank

Thanks for the reply, Frank. You're right in that I check the "full tank" figure when powering up the car to "Ready" then switching to Eco (annoying that the car always powers up in Normal - why can't it remember the last set driving mode, like it does with the regen!!??). I'll do as you suggest with the HVAC on and off, to see the difference.

 

[Frank]

Thanks for the reply, Frank. You're right in that I check the "full tank" figure when powering up the car to "Ready" then switching to Eco (annoying that the car always powers up in Normal - why can't it remember the last set driving mode, like it does with the regen!!??). I'll do as you suggest with the HVAC on and off, to see the difference.

Doug,

You will see a large difference, however even with the 170 plus showing it still does not mean you will get that, however I think that in City driving only I reckon you could easily get 170 or more, I have never tried as I ALWAYS charge my car up every night regardless of the State of Charge and I can't be bothered trying it anyway. Maybe there is a MG ZS EV taxi out there in the forum who could answer that question???

Regards

Frank

 

[Mark Holmes]

Dear all,
Following on from what I said earlier I charged the car tonight to 98% and I have 214 miles of “potential” range. I really don’t understand why and would really like an MG Technical person to explain how or why this has happened..see the photo. You can see for yourself that I’m not going mad or making this up..

 

[KasEV]

@Mark Holmes,
Dear Mark, I understand are worried but it is worthwhile doing an actual motorway range test if you wish to confirm there is nothing wrong before you take it to be checked in a garage.
I however think nothing wrong with your car.
The sort of Miles per kWh figures you are showing are in keeping with summer temperatures + very efficient driving and hence longer distances per charge.
The car has a 44.5kWh battery and has 42.5 kWh available for travel per charge.
If you do 4.5miles/kWh on average
Then your
available range is 4.5 X 42.5 = 191. 25 miles
If another driver only manages 3.2miles/kWh then their
Available range 3.2 x 42.5 = 136 miles

So it is as simple as that.
The worry starts when people get confused and start making claims that don't add up. Such as claims of achieving very long mileage when their miles per kWh is 3.2 or less.
If you were not making 4.5miles/kWh then I would have been very concerned.
The other factor is that you city/motorway drive ratio may be nearer 50:50 or more whereas others may have a ratio nearer 40:60 or 30:70
Remember the WTLP range figure for 100% City driving for the ZS EV is 231 miles.
So there is theoretically the possibility of you even improving your figures further.
I personally think most of us for one reason or another will struggle to go above 4 miles per KWh and hence we will continue posting lower figures. Some clever, slick and skilled ones like yourself will do very high miles per kWh and higher range.
I wish I could say something magical has happened with your car's range but it will be a lie. It is all to do with drive style, weather and efficient driving.
I do not know if you are one of the few with larger wheels and different type pressures as this also affects the range.
If however you still wish to attribute things to some magical power of the recent comfort 2 updrade, I would not hold it against you but I have to doubt it as it is not in agreement with the laws of nature/physics.

 

[Mark Holmes]

Thanks for your reply and I understand your comments, but to me it is very simple my driving style, use of motorway, we were already in good weather etc hasn’t changed and yet the estimated mileage range did after the update. My average is 4.2 miles per kWh, but you are right this does sometimes go above 5 miles per kWh, but I don’t drive fast on average 55 to 60 mph on a motorway as I do try to get more distance from my charge and to be honest it doesn’t add a great deal of time from going that little bit slower perhaps 5 minutes on a reasonable run.
Just to be clear tire pressures are 37 psi front and 38 back when cold.
Tires and wheels are standard.
Just an example of my efficiency from this morning see photo

 

[KasEV]

@Mark Holmes,
Your figures do add up so that is the main thing.
If your miles per hour are up then your range will be high.
And as you sad in winter you did about 3.5 and your range was low. So now that you are doing up to 5 your range should be higher as this equates to over 80miles between you summer and winter range. That is excellent and in keeping with what could be expected without the update. It is all to do with you efficient energy management.
If you do not believe me it is not a problem but just ask all the new members who got their car with the update in place at the time of manufacture. If it is due to the update they will be having the same figures as you.
As non of them are posting such figures it should be clear to you that it is your driving style and the weather that is cause of your good figures.
Anyway as I said before do a motorway range test and then you can do the calculations yourself to see if your odometer readings are the same as the real world calculations.
Having said all that if you start getting over 6 miles per kWh then there is something wrong. I am told the maximum one can do with a ZS EV is just over 5 miles per kWh. It is however difficult to achieve in real life conditions.
Most people may even not get up to 4 miles per kWh no matter in real life what they do.