My mileage is roughly the same, between 13 to 14 kwh per 100km. I pay 0.35€ per kw so that puts my 100km at around 4.75€. Right now in italy that's around 2lt of diesel. You won't get 100km from 2lt of diesel. Ever. And it's only going to get worse.
I've been mocked since I first got an EV almost 5 years ago because I didn't have a realcar™ so now I am sorry but I'm gonna point how much does it cost me to drive my car every time someone brings out the gas prices at work.