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"Running the charger for 9 hours and 15 minutes and consuming 108.6 litres of diesel to charge the 10 EVs, the results came in: a total energy consumption (as recorded by the EV power management systems) of 368.4kWh delivered at an average rate of 3.392 kWh/litre.....
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Converted to standard fuel consumption figures using the lifetime average kWh per kilometre, the BMW i3 came in as the most efficient, recording a fuel consumption rate of 4.392 litres/100km – about the same fuel efficiency as a diesel BMW 3 series.
The Tesla models, while scoring higher than the BMW i3 (between 5.011 to 6.014 L/100km for the Model S and 5.689 to 6.957 L/100km for the Model X) came significantly under similarly sized vehicles in their range (for example, a diesel Holden Commodore does 5.7 litres/100km while a VW Touareg diesel SUV does 7.2 litres/100km)."