Accuracy in Battery Consumption

[kiwi]

All,

Recently I had to do a trip to the north of Auckland/NZ, and decided to measure how accurate range values are on a 2017 MX 75D.

TLDR: its impressive.

Details
I charged to 90% (301km).
The trip was about 110 kms in each direction. 70% was on motorway or highway (80-100km/h limit, dual or single lane each way), and 30% on a windy road.

Going North
On the way up, there was very little traffic on the last windy segment and I drove more “spiritedly” (not speeding, but accelerating out of the corners much more).

Range showed 181km on arrival.
=> 120km range drop and 109 km driven.

Before returning - I used the Nav system to predict how much battery would be left when I reached home. The answer was 21%.

Going South
Sadly there was lots of traffic all the way, so all driving was at or below the speed limit.

Range showed 70km on arrival home.
=> 111km range drop and 110 km was driven.
I arrived home at exactly 21% available, as predicted.
Both are very impressive.

Lastly - I drove 218.4km, 47.3kWh used for a total of:

• 216 Wh/km
• 4.6 km/kWh
• 345 Wh/mile

In Summary

• Driving harder reduced range quickly.
• The car’s range estimator seems very accurate if you are driving normally with traffic.
• The car’s Nav predictor was exact too.

 

[lymex2017]

Thanks for sharing. I'd like to add that driving at 130km/h on high way consumes 252Wh per km, mine is MX100D, two persons with no luggage, and no air conditioning used.