So I have done some math, and found that my gas cost went from $20 a week to under $2 electricity a week. So before my M3 I drive a Honda HRV, doing 8.8L/100km, and for gas cost is about 1.50/L if I fuel with the "89" mid tier. My daily round trip is 20km, but traffic is quite bad so usually I have to pay $18-20 a week in gas. Now my M3 that I owned for 3 days now, charging at home at $0.065/kwh off-peak, each kwh provides 6-7 km, and daily consumption will be 4kwh = $0.26. I measured there is about 10% inefficiency in charging, so the cost is about $0.3 a day and still under $2 a week. Compare ICE cost of $20 a week to $2 a week that is a 90% reduction in fuel cost. Wait what? I triple checked my maths and it looks like it is what it is. What do you guys think?