Two separate circuits
Your vehicle has two separate circuit brake systems. Each circuit works diagonally across the vehicle. If one circuit of the brake system should fail, the other half of the system still works. If one circuit fails, the brake pedal will go down much closer to the floor than usual and you will need to press it down much harder. And a much longer distance will be needed to stop the vehicle.
See also:
Unleaded gasoline
The neck of the fuel filler pipe is designed to accept only an unleaded gasoline
filler nozzle. Under no circumstances should leaded gasoline be used because it
will damage the emission control sy ...
Flat tires
If you have a flat tire while driving, never brake suddenly; keep driving straight
ahead while gradually reducing speed. Then slowly pull off the road to a safe place. ...
Breaking-in of new brake pads and linings
When replacing the brake pad or lining, use only genuine SUBARU parts. After
replacement, the new parts must be broken in as follows: ...