Range prediction - if only

[Badger192]

...and not even 100% charge ha ha.. not bad for a 'Standard'...

 

[webhiker]

Seems spot on to what I get (on a good day)
Try doing the math on the Total trip counter. Or just reset it.

 

[siteguru]

But yours will be in km ... that photo shows the range in miles. (WLTP for the Standard is 218 miles = 350 km or thereabouts).

 

[webhiker]

But yours will be in km ... that photo shows the range in miles. (WLTP for the Standard is 218 miles = 350 km or thereabouts).

I did convert between miles and km, but I was not aware that this was only a standard

 

[siteguru]

I did convert between miles and km, but I was not aware that this was only a standard

It was literally typed in the post with the photo - the very last word.

 

[webhiker]

It was literally typed in the post with the photo - the very last word.

You are absolutely right. Impressive that I managed to miss that.
Yes, for a Standard it is odd indeed. But at least take this out of my comment. I can get achieved ranges which when extrapolated matches WILTP. Not always, not often, but it happens.

Peace out

 

[Badger192]

Back to normal now....

 

[MG Clive]

Back to normal now....

View attachment 41220

Aww, unlucky mate.

 

[Rolfe]

If it's playing silly buggers, when did you last do a long calibration charge?

 

[Badger192]

If it's playing silly buggers, when did you last do a long calibration charge?

Coughsplutter a what? Sorry Rolfe, i've only had the car a few weeks and unaware of a long calibration charge?
Feel free to educate me

 

[siteguru]

Run the charge down low (<10%), plug in to an AC source (e.g. 7kW wall box), then let the car charge to 100% and leave it until the car says charging is completed.

 

[Badger192]

Run the charge down low (<10%), plug in to an AC source (e.g. 7kW wall box), then let the car charge to 100% and leave it until the car says charging is completed.

Will do - thanks !

 

[ReintjeWA]

Considering your mileage (kilometerage?) is around 12.000, perhaps your total accumulated drive time has reached 100 hours, because the display can’t actually show 100 hours it resets back to 0 and in doing so resets your averages, defaulting back to a very optimistic range. Maybe check the page with total accumulated drive time to check that.

But you definitely also want to the calibration charge occasionally.

 

[Badger192]

Considering your mileage (kilometerage?) is around 12.000, perhaps your total accumulated drive time has reached 100 hours, because the display can’t actually show 100 hours it resets back to 0 and in doing so resets your averages, defaulting back to a very optimistic range. Maybe check the page with total accumulated drive time to check that.

But you definitely also want to the calibration charge occasionally.

Thanks for the advice

 

[Rolfe]

Considering your mileage (kilometerage?) is around 12.000, perhaps your total accumulated drive time has reached 100 hours, because the display can’t actually show 100 hours it resets back to 0 and in doing so resets your averages, defaulting back to a very optimistic range. Maybe check the page with total accumulated drive time to check that.

But you definitely also want to the calibration charge occasionally.

But if it's doing that, why the silly-optimistic range?

My SE gets its long charge regularly, and the stupidest range I've ever seen it admit to (twice) was about 230 miles. Both times it was on the Tesla chargers at Fort William, after frustratingly slow drives across Rannoch Moor and through Glen Coe, with rubbernecking tourist buses cluttering up the landscape. I suspect my fuel economy had been quite spectacular at that point.

It can be a bit of a fiddle to organise on the lowest tariff if you have a low overnight period, but I manage it with Octopus IG by refusing to let them start the charge till 11.30 when the cheap rate starts (it suits me not to start earlier), then asking for 100% by 7.30 am.

Come home below 10% if you have to do a wee detour to achieve that. If possible let the car sit for a couple of hours before starting the charge, to let it get a good look at the bottom of the well. Charge it (on AC, obviously) all the way to 100% in a single operation, and then let it do its balance charge. (Make sure there is enough time set on the charger to let it do that, once the charge has started.) And Bob's your uncle. Do it every few months at least.

The LFP battery has a very flat charging curve and it keeps track of where it is on the curve mainly by adding and subtracting charge and usage. But this will gradually accumulate errors over time. Imagine it like a well and you're trying to figure out how much water is in it by keeping track of water running in versus bucketloads taken out. Eventually you're a fair bit out. Then one day you take a lot out, and the car suddenly sees the bottom of the well, which it hadn't seen for a long time, and goes, oops, sorry, there's a fair bit less there than I thought. It recalculates hastily, and suddenly that 20 miles you thought you had is only five. Or less. You avoid this by letting it get a look at the bottom and then recording exactly how much it takes to get to the top, under controlled conditions, every so often.

 

[Badger192]

Must admit it's not the 1st time the predicted mileage has been optimistic (for a standard model)

 

[Badger192]

Will definitely look into draining the battery to below 10% ...if my arse cheeks are strong enough
(My daily commutes are 25miles each way)

 

[T1 Terry]

No one noticed the 14 mph average ..... I've never tried to drive that far at an average of 14 mph, so I'm not going to say it's not possible for an MG4 51 to achieve .... but I'm certain I couldn't do it

T1 Terry

 

[Cabansail]

Why do you have the range in Milliliters? (mls)

I guess getting about half a pint at the end of your trip is OK.

 

[ReintjeWA]

But if it's doing that, why the silly-optimistic range?

I don’t know, I suspect the car’s software just goes “I don’t know anything about your driving so here’s what they’ve told me to show you” (WLTP or whatever formula SAIC uses). But that’s just my guess