What is the difference in fuel consumption between 4WD and 2WD with the same displacement?

[VonJude]

The difference in fuel consumption between 4WD and 2WD with the same displacement is approximately 0.4-0.8 liters. Driving habits: Incorrect driving habits have the greatest impact on fuel consumption. During driving, especially in heavy traffic, at red lights, or when changing lanes, sudden acceleration and hard braking are the most common issues. It was found that when the vehicle enters the test section at a constant speed, fuel consumption can increase by 2 to 3 times compared to driving at a steady speed. Tire pressure: When the tire pressure is too high or too low, the car's fuel consumption will increase. Road conditions: Congested roads or uneven surfaces that force the vehicle to drive in low gear for extended periods will also increase fuel consumption.