Two-wheel drive (2WD) vehicles are more fuel-efficient than four-wheel drive (4WD) and all-wheel drive (AWD) vehicles because they have less driveline components that need to be powered. In addition, 2WD vehicles are typically lighter than 4WD and AWD vehicles, which also contributes to their improved fuel economy.
AWD
All-wheel drive (AWD) vehicles are more fuel-efficient than four-wheel drive (4WD) vehicles because they only engage the front wheels when needed. This means that AWD vehicles can operate in two-wheel drive mode most of the time, which saves fuel.
4WD
Four-wheel drive (4WD) vehicles are the least fuel-efficient of the three drivetrain types. This is because 4WD vehicles always engage all four wheels, even when they are not needed. This results in increased fuel consumption.
