Fuel Consumption; Engine Oil; You are here This article discusses in detail the engine oil used in Ford Focus cars: 1st generation (mk1 1.8 16V Flex Fuel Ford Focus 2014 1.6 fuel consumption is 6.3 litres per 100km in combined city/highway mode (15.9 km/l), fuel consumption in city - 8.7 l/100km, highway fuel economy - 4.9 l/100km. Fuel tank capacity is 55 litres or 14.53 gallons , which gives a mileage up to 860 kilometers without refueling in urban cycle and even up to 1120 kilometers on highway. m4ZX0nI.