"mileage" disappointment or there's wrong/normal here?

[Ethernea]

So ive been using Custom driving move with these settings:

Eco horse power, light wheel turning...
Regenerative level 3...
Always on AC (too hot in here) ...

This car model 64 kWh battery is supposed to have 450 km capacity... But in reality it can only be used 20% to 80% to maintain its health long-term...

So it really is using only 60% of 450km which is supposedly 260km... Which sounds fine if that was the case.

But the last run since last charge... It didn't even make it to 200 km from 80% to 20%...

10 hours - 184 km - 17.9 kWh every 100km...

If its 64 kWh... / 17.9 kWh every 100km.. its supposed to be 3.57x 100 = 357km... Running only 60% of that would be 214 km...

But no.

Its 184 km... Thats terrible.

Im glad charging it is "apparently cheap" but charging this frequently at so low autonomy makes me wonder... What is this?

Is this normal or there's something wrong in here?

(I did spent installing speakers this time - almost 1½ - 2 hours with AC one while making the changes because its too hot in here)

P.s. ive noticed that every 3-4km it drops 1%... So its 300-400k... But 450km seems impossible and they sold me the idea this car could get that distance WITH AC on - and 0 to 100% no issues with battery only to find out NMC cant do this long term or it can fail prematurely.

Bummer. :/

What can i do to improve this?

They supposedly updated the car with obd2... But when i went into the settings of the infotainment it said last update attempted eas BEFORE going to the dealership workshop... And they said infotainment doesnt get updated through OTA in that option but through OBD2

So i dont have latest version MPU R33 or MCU 3.8.0

just this...

• MPU SWI69-29958-1100R21
• MCU 69.3.5.0

Dont know if this could be related to distance efficiency. But definitely felt abandoned by them with " there's no update for Ecuador due to regulations " - like what...

 

[decrep]

economy is very dependent on speed, how fast were you driving?
And the 80% -20% thing is about leaving it outside that range for long periods, you can charge to 100% the day before your trip without a problem, and also drain the battery as far as you dare before filling.
So you should be able to safely use 90% battery on a long trip

 

[haloweenhamster]

Different regions do have different software versions so that part is plausible, MG are also poor at providing updates as well though.

As for mileage being off, I haven't paid any attention to it, most of the time mine reads 2.0 miles per kWh which is the minimum it reads but I drive more like it's a play thing than driving economically.

 

[Robf]

Make sure you have intelligent battery heating turned off.

Consumption figure (kWh / 100km) number is not updating

Last couple of days the power consumption number (since last charge) is not updating. I'd normally leave this for a few days to get a better handle on it, but I'm going to really need that figure during a long trip planned on Sunday. Has anyone else come across this? It is stuck at 29.8 kWh /...

www.mgevs.com

 

[Ian Key]

It's having the air-con running all the time which is killing your range. Also when did you last do a 100% balance charge on an AC?

 

[wattmatters]

17.9 kw every 100km

For highway driving with aircon running hard in hot weather that sounds pretty normal.

If you plan a long drive then charging to 100% the day/night before is perfectly fine, as is discharging down to single digit %. The main thing is not to leave the car at a very high or very low state of charge for long periods.

Our long term average energy consumption over 12,000km is 17.6 kWh/100 km. That's actual charge energy data (mostly at home AC charging), not car battery consumption.

 

[fnegroni]

For highway driving with aircon running hard in hot weather that sounds pretty normal.

If you plan a long drive then charging to 100% the day/night before is perfectly fine, as is discharging down to single digit %. The main thing is not to leave the car at a very high or very low state of charge for long periods.

Our long term average energy consumption over 12,000km is 17.6 kWh/100 km. That's actual charge energy data (mostly at home AC charging), not car battery consumption.

Which translates to ~16.5 kWh/100km battery

Mine is av between summer and winter 16.9 kWh /100km

 

[Flightengineer]

Nice topic! First, useable battery capacity is 61.5 kWh. Declared range is 435 km. Second, check your driving style.
My usual commute is about 40 km: 20 down to the hill without AC and 20 back up hill with AC on. We have hot weather in Israel as well. So my average is 14.6 kWh/100 km. Once I started with full battery and finished with 12 % covered 372 km. Which give me range just above 400 km. I drive in OPD mode, mostly alone without speeding on traffic lights and speed not more than 80-90 km/h.

 

[OriginalBigAl]

I do not know how seasonal the weather is in Ecuador , but working off just over 400 kms for a full battery would be the prudent real life approach. 18-20°C days best for the battery and when you do not need A/C or heating and in ECO mode gives you the best range , but then reality takes over. By the way , you have some really slow bikers in Ecuador!!!!

 

[wattmatters]

Which translates to ~16.5 kWh/100km battery

Yes but that's an overall average. Highway consumption is higher.

17.9 kWh/100km reported by the car for highway driving in the heat with aircon doing the ton on a Summer's day here sounds perfectly normal to me. I typically see 17.5-18.5 on highway journeys. Anything outside that usually means head or tail winds.

This is my normalised range estimate (km per 100% SOC) over the last 6 months I have been collecting the data from the car via the SAIC API / Home Assistant integration:

Obviously normalised range varies depending on what sort of driving you've been doing and environmental conditions. Looking at the above, can see dips around 7-11 May, and a shorter one around 13 July. The former was a 1000+ km highway trip, the latter a couple of runs up and down the local mountain (~1000m elevation gain each time).

Effective full range on highway driving here is 320-350 km (which is why I prefer to arrange charge stops within ~280 km), regular driving will see full range of 360-400 km and when just mainly doing local town slow stuff it's 400-440 km.

 

[siteguru]

The latest Infotainment for your car @Ethernea is 1100R33; you currently have the UK/EU version 1100R21 installed. Whether or not 1100R33 is available with your dealer is another matter.

 

[Lord Randall]

I think the low range is tied to the very low average speed.

My commute is 52 km daily, I drive all week (260 km) starting from 80% and ending between 33-35%.

My daily consumption is 8-10% battery. AC always on. My commute is mostly on route with speed-limit between 50 an 70 km/h. My average given traffic is 40-45 km/h.
Average consumption is 11.5-12 kWh/100km going and 14-15 coming back.

64kWh battery, Italian summer so around 25 °C in the morning and 35°C going home.

 

[phil99]

It's having the air-con running all the time which is killing your range. Also when did you last do a 100% balance charge on an AC?

AC doesn't impact the battery anywhere near as much as heating. It obvs has some impact but compare A/C to heating and it's nothing.

For highway driving with aircon running hard in hot weather that sounds pretty normal.

If you plan a long drive then charging to 100% the day/night before is perfectly fine, as is discharging down to single digit %. The main thing is not to leave the car at a very high or very low state of charge for long periods.

This is everything you need. High speed constant driving is the least efficient.

Don't stress about the battery. There's not much you can do as an average user to cause it any damage. There's LOTS of data out there from older and newer EVs showing that yes - battery degradation is a thing - but it doesn't have any real-world impact for most users.

People who drive long distances regularly will be impacted, but if you're driving long distances regularly you're probably either leasing or changing your car regularly.

 

[wattmatters]

think the low range is tied to the very low average speed.

I think you meant low range is tied to high average speed.

 

[fnegroni]

I think you meant low range is tied to high average speed.

Not really: at that average we are talking too much stop and go. Not enough momentum: look at the stats in the first picture.
I get better mileage at 40mpg average than at 7 mph over the same distance.

 

[Lord Randall]

Very low speed average over 180 km mean lots of stops, and starting from standing still mean huge spikes of energy drained, expecially uphill. You will get you best range at speeds over 40-50 km/h up to 90 km/h, when air drag start to exponentially hit your efficiency.

 

[wattmatters]

Not really

Well they go on to quote the following economy rates from their stop/start low speed commutes, which are pretty decent:

My commute is mostly on route with speed-limit between 50 an 70 km/h. My average given traffic is 40-45 km/h.
Average consumption is 11.5-12 kWh/100km going and 14-15 coming back.

Converting my normalised range estimate into economy figures (kWh/100km), it looks like this:

You will get you best range at speeds over 40-50 km/h up to 90 km/h, when air drag start to exponentially hit your efficiency.

Air drag occurs at all velocities above zero and is a power function, not exponential.

What you are describing is a consequence of the power-speed equation for a vehicle which has both linear (gradient and rolling resistance) and curvilinear components (acceleration and air resistance).

At steady state velocity and low speeds, the linear components (rolling resistance and gradient/changes in gravitational potential energy) make up a larger proportion of the total power demand while at higher speeds on flat terrain the air resistance component is dominant and being a cubic power relationship, gives the sense of being "exponential".

 

[Lord Randall]

I defeated the WLTP by 67km ?

Well I don’t think is real but still...

 

[Rolfe]

At your ambient temperatures, it probably is real.

 

[Rapax]

This is just city driving with a bit of heating (it was 10°C this morning). Trophy ER.
Depending on driving style it can go way up. This was normal driving.
Average total is 15.5. highways, ect.