First Year Energy Consumption

[tarbat]

My Cyberster Trophy goes in for it's first service tomorrow, so I thought it was worth summarising the energy consumption over the first year. I've always kept records of energy consumption on my previous EVs, and I have to say the Cyberster compares very favourably with my previous EVs (a Fiat 500e La Prima Cabrio and a Renault Megane eTech).

One major caveat - I do very low mileage each year, this past year being less than normal due to a stay in hospital and recuperation afterwards. So total mileage is just over 1000 miles. The Cyberster is our only car, and we don't use it daily, it's used for days out touring and trips to hospital, doctors, etc. The days spent touring are normally "fun" driving, with no eye on energy consumption In fact the lowest the battery has ever been down to is 44%, and the average charge is 22 kWh over 19 charging sessions.

There are 3 ways to measure energy consumption:

• 2.8 mi/kWh : Calculated from the energy charged from our home charger, vs the miles covered. This is the best equivalent of a mpg figure from an ICE car.
  Once I account for charging losses, that then equates to around 3.2 mi/kWh from the car's battery.
• 3.3 mi/kWh : As reported by the Cyberster.
• 3.9 mi/kWh : As predicted by the Cyberster.

So it's clear the predicted range is generally overstated, but the energy consumption reported by the Cyberster is very close to the actual energy consumption.