What is the average MPG (fuel economy) of a Toyota land cruiser ? Toyota land cruiser average fuel consumption is 29.0 MPG or 10.1 litres/100km and average CO2 output is 262.0 g/km based on 71 models. CO2 (carbon dioxide), mileage, fuel economy and other emissions data for Toyota land cruiser cars. 2017 Toyota Land Cruiser Wagon 4WD. Search by make for fuel efficient new and used cars and trucks Fuel tank capacity is 87 liters. Fuel economy in city is 16.7 lt/100km, Fuel economy in highway is 9.8 lt/100km and combined fuel economy is 12.4 lt/100km according to officially published data by manufacturers. Land Cruiser 4.0 V6 real World MPG/consumption is 20,4 lt/100km.