John Johnson

Hey guys I have a 2003 a6 3.0 Quattro, it's leaking an insane amount of brake fluid, I am currently empty from just and hour, can anyone tell me what's wrong? I took off the tire and found what I believe was the cause. That rubber hose thing in the top left corner, sorry about the crappy picture.

georgeb944

It's probably the brake line to that caliper,

If you have someone watch while you step on the brakes, they will be able to see where the brake line is broken.

Replace it with a new one, refill the reservoir and bleed the brakes.

Might be a good time to replace the rotors and pads. The rotors in the picture look like they have seen better days.

Joby

You should just replace all four. If this one has failed, the others will fail soon. FYI, use regular, aftermarket rubber hoses. The stainless steel reinforced lines only last about 5 years. Also, when they fail, they fail catastrophically. You'll have brakes one second, then the pedal goes to the floor. Ask me how I know.