Been driving my Smart ED since November 2013.
In 10 months of driving, I have not bought gas once (obviously).
That is >5000km of driving, with average usage of less than 18kWh/100km (including winter).
So that is 900kWh of electricity, at $0.12/kWh total of $108.
I'm not sure anyone here could beat that.
$108 to drive 5000 km.
My wife buys gas for the GLK every week, and even when I drive it for weekend trips with the family, she fills it up Friday before the weekend. I just don't want to visit gas stations.
We spent $1700 on gas this past year to drive 10,000km in the GLK. Crazy!!