Over at PriusChat | Toyota Prius Forums, News, and Accessories someone asked about miles/kWh for various vehicles (actually they asked about kWh/mile), but we did a bit of calculation for the Model S that I thought members here would like to see.
160mi/40kWh = 4.00 mi/kWh = 0.250 kWh/mi = 0.155 kWh/km
230mi/60kWh = 3.83 mi/kWh = 0.261 kWh/mi = 0.162 kWh/km
300mi/85kWh = 3.53 mi/kWh = 0.283 kWh/mi = 0.176 kWh/km
320mi/85kWh = 3.76 mi/kWh = 0.266 kWh/mi = 0.165 kWh/km*
Perhaps those differences aren't dramatic, and we also don't know how accurate the range forecast numbers really are, but it seems that the smaller/lighter battery packs will make a significant differenced in efficiency. Also, that the improved aerodynamics of the Performance version really have a positive impact.
*At 55mph per numbers from Tesla
160mi/40kWh = 4.00 mi/kWh = 0.250 kWh/mi = 0.155 kWh/km
230mi/60kWh = 3.83 mi/kWh = 0.261 kWh/mi = 0.162 kWh/km
300mi/85kWh = 3.53 mi/kWh = 0.283 kWh/mi = 0.176 kWh/km
320mi/85kWh = 3.76 mi/kWh = 0.266 kWh/mi = 0.165 kWh/km*
Perhaps those differences aren't dramatic, and we also don't know how accurate the range forecast numbers really are, but it seems that the smaller/lighter battery packs will make a significant differenced in efficiency. Also, that the improved aerodynamics of the Performance version really have a positive impact.
*At 55mph per numbers from Tesla
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