Accuracy of range and efficiency from various sources

[aibo]

Which one is the most accurate and which one is the most inaccurate based on 2013 model?

1) SOC
2) GOM
3) Onboard Carwings Energy Info (average km/kWh)
4) Carwings website historical data

 

[TonyWilliams]

Which one is the most accurate and which one is the most inaccurate based on 2013 model?

1) SOC
2) GOM
3) Onboard Carwings Energy Info (average km/kWh)
4) Carwings website historical data

Not all cars have Carwings, so you can eliminate 3 and 4 for those cars. The GOM is just that, so I vote number 1.

The only problem with the dash SOC% is that as the battery degrades (or is exceptionally cold), that 100% has a different actual value of stored energy.

The best is a Gidmeter or the LEAF Spy app on Android devices.

 

[aibo]

Today, SOC was 79% before I left home. After I drove 46km, the SOC dropped to 43%. If we assume the usable capacity is 21kWh, 7.56kW was used. The average would be 6.08km/kWh (3.75 miles/kWh). However, the car's dash shows an average of 7.8km/kWh (4.8 miles/kWh). Why is there such big discrepancy? It's off by over 25%. 7.8km/kWh seems to make sense as it was city driving with top speed around 60km/hr (37mph). GOM projection is close to 7.3km/kWh (4.56 miles/kWh).

It's hard to determine the estimated if there isn't a reading I can trust.