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Every model in the Subaru lineup except the Subaru BRZ comes standard with an AWD system.

The 2024 Subaru Impreza AWD Hatchback.

How does Subaru AWD work? The Subaru AWD system is a permanent All-Wheel Drive instead of a part-time one. That means power is going to the wheels at all times instead of only when traction is lost.

The firm's so-called Active All-Wheel Drive system is found in the majority of Subarus, models paired with a CVT. It Sends most of the engine's torque to front wheels, though, yes, the rears are always driven as well. An electro-hydraulic multi-plate clutch pack shuffles twist from front to rear as required.

Overall, the main difference between 4x4 and AWD is that AWD systems are always active and automatically share torque among the axles when low-traction conditions are detected, while 4WD systems are part-time and need to be engaged by the driver via a lever or button in the cockpit.

Crossover small or medium SUV All-Wheel Drive cars such as Subaru Forester that are designed for normal road use with occasional dirt or mild off road use generally use permanently engaged AWD systems. This has the active safety advantage of always having twice the grip of a driver selectable 4WD system.

Some vehicles use “full-time all-wheel drive.” Just like the name suggests, full-time AWD always sends power to both the front and rear wheels. While these systems never turn off, they may still be able to vary how much power goes to the front or rear if they sense your wheels starting to slip.

All-wheel drive, or AWD, refers to a system where all four wheels can gain traction independently of each other. The difference between AWD and 4WD is that AWD is typically always on while you can toggle between having 4WD on and off.

Since 4WD systems tend to be more robust than AWD systems, they can handle more abuse and power. Low- and high-range settings allow the driver to dial in the right amount of power and torque delivery to gain the best traction for the situation.

Improved performance: An all-wheel-drive car has better acceleration than RWD or 4WD. Since all four wheels accelerate simultaneously, there is no wheel spin when you pull hard.

Is AWD Less Fuel-Efficient? All-Wheel Drive components are heavier and tend to place more weight on the engine. This can bring a vehicle's fuel efficiency down by 1-2 mpg.