Found this thread interesting because, after the 'full software update' in July (according to the dealer) my GOM increased from 160-170 to 217 on a full charge. I'm almost always in ECO, KERs 3, HVAC off and typically getting 4.1m/Kw. The first time this happened I did run it to 198 miles before chickening out and recharging. In theory impossible (or highly unlikely)
My brother has a 4 year old ZOE and when its battery capacity dropped to below 70m a software update increased it back to the original 90m. This makes me think that manufactures are managing the battery to not fully charge for two reasons; 1. because its better for the battery health to not fully charge it 2. because they can pull a 'fix' out of the bag when a battery drops below 70% within the warranty period.
If the above speculation is true, this boost to 217m means the battery is fully/over charging, which could shorten its life. Any thoughts?
@GrahamH
By MG's own data if all one does is city driving then the GOM would show up to 231 miles on a single charge and I know of a few OAPs with ZS EV who were getting 215 to 220 both before and after C2U because they do short slow drives to the supermarket only. So getting GOM readings over 200 is normal if that is the type of driving you do.
I note you question if C2U may have done a miracle on the ZS EV GOM.
If C2U does something miraculous to the car, I would expect the GOMs in the cars of these OAPs to now be showing 300 on a single charge.....??
Anyway what about all the other thousands of ZS EV that have been sold and software Updated?
Why have they not experienced this miracle?.... I forgot this question has been answer already... Only the "choosen" get the miracle.
Well let's leave the myths behind and tackle the science......
It is a known fact that certain 1st generation EVs with air cooled battery systems had a wider buffer with regards to depth of discharge to protect the batteries and also prevent customers from making claims on batteries in the early days of the EV market. The companies however stated clearly what their battery depth of discharge was. It think some were about 70 to 80%. As manufacturers became more knowledgeable about real life battery degradation and more efficient methods of battery cooling they updated their software to increase the depth of discharge to 90- 95% and to the best of my knowledge they explained to their customers what was being done.
I wonder why MG in their information update on the C2U did not mention the miracle of the GOM. No sorry I know the answer to that question..... It will be revealed only to "the chosen" .
@GrahamH I note you stopped and charged your car when you felt the mileage on the GOM may have been unreasonable. That was absolutely the right thing to do.
So my question is what is the gain to you as a owner and to MG as a manufacturer of having a GOM that shows miraculous high mileage that is not achievable in the every cars that these miraculous high range is appearing?
Clearly there is no benefit except if one wants to promote "the cult of the chosen few"......
@GrahamH I would suggest if you think your GOM is malfunctioning that you have it checked.
There is nothing to be gained by your GOM showing 1 million miles when you know the battery will not take you that far and you can see that even if you drive at a speed of I mile per hour and your efficiency is 100miles per kWh you will not make the I million miles shown on your GOM.
@GrahamH I do not think you should worry about MG doing something that will undermine its best selling car in the UK by putting in an upgrade that will lead to quicker battery degradation. MG will not self sabotage in that way.
The way I see it the only people undermining MG are the "prohets of the chosen few cult" who persistently misinform about how GOM works, claim their GOMs and hence their cars have miraculously range and then when they can not achieve that range they abuse and degrade MG saying their GOM is basic, inaccurate, deviates by as much as 80miles and even that the software on their GOM is that of another MG not the ZS EV. Yet they continue to proclaim their GOM miraculous.
All I will say is beware of these "wolves in sheep clothing" and if you have any doubt about your GOM have it checked by MG.