 First I apologize abouut my bad english. I have the basic canadian version, slightly different from your's. Already drove 4000 km (2500m.) with it, mostly on highway. Average mileage, cold temperature: 52.3miles/Imp. gallon (160oz.). Best mileage: 72.4 miles/imp. gallon (on 20 miles) Best electric autonomy: 3.4 km. (2.1miles). Better than what figure in owner manual.