Audi RS6 Spongy Brakes: Safety Alert + Expert Tips

As a 2017 Audi RS7 owner, I encountered similar brake pedal issues. The spongy brake feel typically indicates air in the brake lines or deteriorating brake fluid quality, even if levels appear normal. In my case, the problem started gradually and worsened over time. The diagnosis revealed two issues: the brake fluid had absorbed moisture over time and needed a complete flush, and one brake caliper was sticking slightly, causing uneven pressure distribution. The fix required: Complete brake fluid flush and replacement, Brake caliper rebuild, Bleeding all brake lines thoroughly The sticking caliper was causing additional wear on one brake rotor, which could have led to more serious issues if left unaddressed. Signs of brake system problems should never be ignored, as they directly impact vehicle safety. For your RS6, recommend having these checked: Brake fluid quality testing, Brake caliper operation on all wheels, Air in the brake lines, Brake master cylinder function This was a serious repair that required immediate attention. These high-performance vehicles need specialized brake system maintenance, particularly with their complex brake setups.

Thanks for sharing your experience with the RS7. The symptoms sound exactly like what I was experiencing. I took my RS6 to a different shop and they also found air in the hydraulic brakes plus a worn brake caliper that needed attention. Would you mind sharing how much you paid for the repairs? Also curious if youve had any issues with your disc brakes or squeaky brakes since getting it fixed? Want to make sure I'm budgeting appropriately and know what to watch out for going forward.

After getting the repairs done, my RS7 brake system has been performing flawlessly. The total cost for fixing the undervoltage issue came to 240 Euro, which was reasonable considering the work involved. The brake calipers now engage smoothly with no squeaking or inconsistency. The brake pedal feels firm and responsive, just like it should in these performance vehicles. Haven't experienced any squeaky brakes or other brake-related problems since the repair. One tip: regular brake fluid changes and checking the hydraulic brakes for proper operation help prevent these issues from recurring. The investment in preventive maintenance is worth it, especially considering how critical the braking system is for safety. Your RS6 should now perform similarly well with the repairs youve had done. Just keep an eye on the brake fluid condition and listen for any unusual sounds when applying the brakes.

Following the advice, I took my RS6 to a certified performance shop. The total repair came to 280 Euro, including a complete brake fluid flush, fixing the faulty caliper, and bleeding the brake lines. The disc brakes are now working perfectly, no more spongy pedal or inconsistent feedback. The mechanic showed me how the old brake fluid had absorbed moisture over time, which explained the sponginess. They also found slight wear on one of the brake rotors due to the sticking caliper, but caught it early enough to avoid replacement. Been driving for about two weeks since the fix, and the difference is night and day. The brake pedal is firm and predictable, with no metal-on-metal sounds or squeaky brakes. Will definitely stick with this shop for future maintenance, they took the time to explain everything and the pricing was fair. Going to follow their recommendation of checking brake fluid quality every 6 months instead of waiting for problems to develop. Lesson learned about not ignoring early warning signs with brake systems.