You read that right. Let’s do some math to prove it.

Since electric and gas are measured in different units and capacities, I needed to calculate the cost to drive 1 mile for each.

My wife drives a moderate 18 miles per day to and from work. This is normal. Most people drive less than 40 miles per day.

So here’s the math. (All numbers are rounded up or down for readability).

### Gas Car

- In 2012 cars averaged 24 MPG.
- In February 2013 the average price for gas in Chicago was $3.93. Could be worse – highs were around $4.28 in 2012.
- $3.93 per gallon of gas ÷ 24 miles per gallon = $.16 per mile.
- That’s $2.88 a day to drive 18 miles.

### Nissan Leaf

- With a full battery, our Nissan Leaf averages 75 miles. (This is an average based on varying conditions).
- The battery has a capacity of 24 kilowatt hours (kWh).
- In March 2013 the average cost per kWh in my area never exceeded $.06, and was often less.
- 24 kWh * $.06 = $1.44.
*Translation: it costs $1.44 to fill the Leaf’s battery to capacity, for which you will get 75 miles of range.* - $1.44 per full battery charge ÷ 75 miles per full battery = $.02 per mile.
- That’s $.36 a day to drive 18 miles.

### Summary

- $2.88 to drive 18 miles per day in a gas car.
- $.36 to drive 18 miles per day in a Nissan Leaf.
- $2.88 / $.36 = 8. It’s 8x more expensive to drive a gas car for a daily commute.

**Driving a Nissan Leaf every day to work saves us $2.52 per day. $12.60 a week. $50 a month. $600 a year. And that’s just going to and from work.**