What kind of four-wheel drive is Subaru's four-wheel drive?
2 Answers
Subaru's four-wheel drive is a full-time four-wheel drive. The following are the differences between full-time four-wheel drive and on-demand four-wheel drive: 1. Different structures: On-demand four-wheel drive has a relatively simple structure, while full-time four-wheel drive has a more complex structure. 2. Different power distribution between front and rear axles: On-demand four-wheel drive has a smaller adjustment range, while full-time four-wheel drive has a larger adjustment range. 3. Different operation methods: On-demand four-wheel drive does not have a separate button inside the vehicle, while full-time four-wheel drive has a separate button. Part-time four-wheel drive vehicles are designed with a transfer case, which may be a lever for the transfer case or an electronic button or knob. Most on-demand four-wheel drive systems have a separate button inside the vehicle labeled 'lock,' while some are automatically connected to the four-wheel drive state without any button inside the vehicle.
I've always thought the coolest thing about Subaru's AWD is that it's 'always on.' Almost all their models come with full-time AWD straight from the factory, unlike some cars that require manual switching. The most basic ACT-4 system can send 95% of power to the front wheels, but the rear wheels always maintain a bit of force, making it especially stable in rain or snow. Models like the Outback and Forester use the smarter VTD system, which normally distributes power at a 45:55 ratio but can instantly shift up to 70% of power to the wheels with better traction when slippage occurs. Drive it on ice, and you'll know—that feeling of firmly sticking to the road is truly reassuring.
