I've been running about 10- 10.5 l/100km ( SWB model) It's been running minus 20 celsius temperatures so we idle a lot to warm up plus a lot of time gets spent in traffic jams. Diesel here is running $1.25 a liter lately- about 18 cents more tham low octane gas, 7 cents nore than higher octane gas. The difference all lies in government taxation (taxes are the highest cost element of fuel in Canada) and for some reason although it costs less to refine diesel it always costs more than gas at least here in Ontario Canada.