If we do $32K Volt (164.73 MPG avg according to voltstats) vs used $5k Corolla at 32 MPG, the break even point is 19.86 years (because of the higher cost of the Volt vs Leaf).
The Volt would take 91.06 gallons a year, more or less. People have been good at getting only maintenance charge from the ICE.
Let us assume best case, no ICE use from the Volt (impossible, I know), it would still take 16 years vs the $5k Corolla.
Now, Volt vs Leaf. No math needed. Volt costs more, actually needs fuel, so the Leaf is the best buy on fuel costs only. Driving distance, on the other hand, is a different beast entirely.
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