26 Feb '12, 7pm

volt vs. prius

volt vs. prius

Excellent report, Ray, thank you! I see three minor technical errors in your analysis and one fundamental “error”. Minor error #1: You are using 89 octane gas, but GM recommends premium gas for the Volt. I can see getting away with 89 if you burn it pretty quickly, but you really should stick with the manufacturers recommendation for the purpose of this calculation (like you did with the EPA MPG number). Minor error #2: I wouldn’t attribute the gross vs. net kWh difference to just the pumps and heaters. The charger (AC/DC rectifier) efficiency and battery efficiency itself will contribute. You should generalize that definition a bit more. Just my opinion :) Minor error #3: That electricity cost is highly variable across the US. I am paying $0.055 per kWh, about a nickel per kWh, here in Atlanta. That’s going to push the crossover distance way out. You should run the calcs ...

Full article: http://www.plugincars.com/mpg-comparison-2012-volt-vs-201...

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