Keeping track of my MG4 (efficiency)

[LenEV2016]

tends to happen with tyres

Yeah black ones!!


Does that count as product placement

 

[MG4JP]

You can buy continental premium contacts in Europe but not an exact version of the stock tyre, that is the point Im making the ones that came with the car were specific to the Chinese market with a Chinese specific rubber compound.

There are numerous threads on how crap the stock tyres are.

We are however going round in circles, at the end of the day the tyres are shite

I'm not entirely sure I'm getting what you're trying to say, especially because you refer to "Continental PremiumContact" in general.

As far as I know, there are at least two versions of the PremiumContact: the numbered ones ("5", "6", etc.) and then there's the "C". I can buy both the numbered ones and the "C" versions in Europe.

Are you saying that the "PremiumContact C" version we have access to here in Europe is different than the "PremiumContact C" version that comes installed in the car?

Genuinely just trying to understand, that's all.

 

[LenEV2016]

I'm not entirely sure I'm getting what you're trying to say, especially because you refer to "Continental PremiumContact" in general.

As far as I know, there are at least two versions of the PremiumContact: the numbered ones ("5", "6", etc.) and then there's the "C". I can buy both the numbered ones and the "C" versions in Europe.

Are you saying that the "PremiumContact C" version we have access to here in Europe is different than the "PremiumContact C" version that comes installed in the car?

Genuinely just trying to understand, that's all.

Yes, if you search the forum on the stock tyres subject you will read all about the issues and how the stock tyres are a Chinese market only specific tyre.

 

[wattmatters]

December plus full calendar year data. Comparisons with previous Decembers shown.

Not a big month of driving but 92% of it was powered by the sun via our own generation.

In December we added a 12.5 kW bidirectional DC charge module to our home solar/battery system. The charge from solar feature works really well and can suck down the photons pretty much as fast as my PV will supply. I have seen it charging at up to 12 kW at times.

Else if needed we also get free energy from the grid for 3 hours a day from 11 AM to 2 PM.

 

[Rolfe]

That's really impressive.

 

[Corindikev]

I have paid nothing for months for energy. When we moved in August I had a $50.00 credit with Evie which they gave me for some reason & their supercharger was just up the road. That got me through till I installed my ZJBeny 7kW wall charger & charged during the 2 hour free period each day (12:00 - 14:00).

On 24 November my 8.8kW of new solar went in plus the 18.64kWh battery. By then I'd changed to the OVO energy plan of 3 hours free per day plus 8c/kWh from midnight to 6am.

The battery software is set to always use battery before grid so on a rainy or heavy cloud cover day it uses solar, then battery & lastly grid. Since then I have never drawn any grid power at all & have not needed to use the cheap night rate either.

My 8.8kW of bi-facial panels have actually produced 10.0kW at peak. Documentation stated that the bi-facial panels could generate up to 15% more & while the expert reviewers were sceptical of this claim, the results I have achieved prove this to be possible.

Total outlay was AU$11,600.00 (would have been over $18k without subsidies).

 

[EvTek23]

Happy new year to everyone.
I'm posting my figures for December.

I also noted the large recalibration of the GOM. Initial figure based on the months motoring

The recalibrated estimate after the accumulated trip distance reset.

 

[MG4JP]

First and foremost, Happy New Year, everyone!

First post updated, with December's data:

Period	Distance (km)	Efficiency (kWh/100km)	Average Speed (km/h)	Up Time
December 2025	2370	17.1 (3.63 mi/kWh)	45	51:50

Current overall combined efficiency, after 30,024 km: 15.2 kWh/100km (4.08 mi/kWh).


Notes for this month:

• As suspected, this month I hit a new record for my monthly consumption: 17.1 kWh/100km (3.63 mi/kWh);
• As mentioned in my previous month's summary, I did the 800km trip once again this month;
• The consumption for this trip was around 7.5% higher than the previous one... Yes, the weather was a bit colder (2 or 3 degrees Celsius) but everything else was pretty much the same (same time of the day, barely no wind, same number of passengers, pretty much the same luggage and travel speeds), so I'm thinking the main culprit is actually the new Michelins. Still need to do a few more miles with them in order to get to a proper conclusion, as we know new tyres will usually return higher consumptions.

 

[EvTek23]

I think I've been doing the car and myself some injustice in relying on the mls/kWh figure from the onboard trip computer. This, for the last two months has shown 3.5mls/kWh. I saw a spreadsheet from @KnightRider for his IM5, and made up a spreadsheet using my own records of home and public charging.
There were two things very apparent from this:
1) The onboard trip computer is not really telling the full story.
2) The actual achieved mls/kWh is higher than I expected. The data for the charging energy is taken directly from my EVSE, or from my Pod Point account, so therefore is raw input power including all the loss in the CCU etc.

Over the two months I have posted by readings, I now get a real figure of 4.11 and 4.12 for November and December respectively.

 

[wattmatters]

In my numbers, the energy consumed is always that supplied to the car, be it from our solar PV system, the grid or a public charging station. IOW the energy I have to "pay" for (even though some energy might be free of charge).

The rare exception is when using destination AC charging for which there is no metering and so I use the car's system (via Home Assistant) to inform me on how much energy has been added.

 

[EvTek23]

You'd just expect that with the inherent losses during the charging conversion (around 10%) in the CCU that the power input effective mls/kWh from the EVSE would be a lower figure than the DC to 3 phase AC conversion in the motor controller mls/kWh.
So which figure then is the actual value, the EVSE figure that sees the car in a better light or the on-board figure?

 

[T1 Terry]

Our poverty pack 51 said I had 320kms range when I set off for the AEVA meeting, but the kwh/100kms said 25 ..... With a 51 supposed kwh battery, that added up to 200kms .....
The orange warning came on about 15kms from home, I rolled through front gate with 198km on the trip counter and 2% on the SOC, that comes out to 1kwh left, but the kwh/100kms was at 21 by then because the last 50 kms was very light throttle driving at under 50km/h .....
Very strong winds was the cause I'm guessing, but the 51kwh was not available it seems, the GOM was not even close, it though I still had 100kms range left .... I've never heard of a constant down hill run that long .....

T1 Terry