How to deal with excessive fuel consumption in a 2012 Magotan?

[MacFelix]

Check if high-viscosity engine oil is being used; it's best to use oil with a viscosity rating below 30. Clean the fuel injectors using a non-disassembly method. Inspect the lubrication of the walking mechanism and check if there is any additional resistance when the wheels rotate freely. Have a skilled technician inspect the three-way catalytic converter and oxygen sensor, and clean the three-way catalytic converter while at it. Check if the tire pressure has been consistently low. Inspect the tires for any damage. Inspect the spark plugs for contamination and check their ignition performance; clean or replace them if necessary. Consider changing the transmission fluid using a circulation method.