This bulletin provides diagnosis and procedure information to be applied when diagnosing potential fluid leaks on front and rear brake calipers. This information has been developed to reduce unnecessary brake caliper replacement.
full bulletin at NHTSA ↗2005 Subaru Legacy brakes problems
moderate 24 complaints filed with NHTSA · avg repair $450 · see brakes across all vehicles →
Failure mileage
Complaints
24
Recalls
0
Avg fix
$450
When does it fail?
Of the 24 brakes complaints filed for the 2005 Subaru Legacy, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 9 model years of Subaru Legacy we track for brakes problems, this one carries the most owner complaints on file — 24.
No new NHTSA brakes complaint has been filed on this vehicle in over 7 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering brakes on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This Service Information bulletin announces instruction for application of additional lubrication between the brake caliper support and pad clips. This will prevent the pad from dragging due to corrosion buildup which may result in uneven or premature wear of the replacement brake pads. This additional instruction applies to all models with brake pads using the upper and lower pad clips and has been added to the brake pad installation procedures found in the related Service Manuals.
full bulletin at NHTSA ↗WQK-47R - BRAKE LINE CORROSION
full bulletin at NHTSA ↗Brake Line Corrosion
full bulletin at NHTSA ↗WQK-47R - BRAKE LINE CORROSION
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Brake line corrosion is the dominant issue across these 23 complaints, with rear lines above the fuel tank or near the rear passenger wheel rusting through and leaking fluid. Owners describe the brake pedal sinking to the floorboard while driving—at 25 to 60 mph—forcing them to rely on parking brakes or downshifting to stop safely. The problem typically emerges between 88,000 and 229,000 miles, often three to seven years after Subaru applied anti-corrosion wax coating under recalls 13V110000, 04V274000, 14V311000, or WQK47-2. Multiple owners report the wax treatment failed to prevent renewed corrosion; some had the coating reapplied in later years (e.g., 2019) only to see lines rust again within months.
Dealerships and Subaru have refused repeat repairs under warranty, citing geographic registration restrictions, prior service completion, or mileage thresholds. One owner faced a $3,997 repair estimate for line replacement after the recall treatment proved ineffective. One dealership disputed recall-completion status with NHTSA despite official records showing the repair was done, leaving the owner stranded with inoperable rear brakes. A smaller subset mentions early rotor warping and excessive pad wear at 14,000–26,000 miles, and one ABS failure at 34,000 miles, but the brake line corrosion dominates complaint volume and severity.
Same Subaru Legacy brakes reports on nearby years: 2008
Failure modes owners describe
Rear brake line corrosion and perforation
Brake lines, primarily in the rear above the fuel tank and near the rear passenger wheel, corrode and perforate, causing brake fluid leaks. Occurs in vehicles treated with anti-corrosion coating under previous recalls, suggesting the treatment is ineffective long-term.
When: Between 88,948 and 229,126 miles; often 3–7 years after initial corrosion-treatment recall service
Symptoms owners cite: Brake fluid leaking visibly from underbody or rear wheel area; Low brake fluid level in reservoir; Brake pedal sinking to floorboard under braking; Loss of brake pressure or stopping power; Brake warning light illuminated
Repairs/costs cited: Owners cite full brake line replacement as the required repair; one estimate was $3,997.17. Dealerships treated under prior recalls (#13V110000, #04V274000, #14V311000, WQK47-2) applied anti-corrosion wax coating only; rust recurred shortly after in some cases.
Recalls/TSBs owners mention: NHTSA recalls issued: #13V110000 (2013), #04V274000 (pre-2013), #14V311000 (2014), WQK47-2. Treatment was anti-corrosion wax spray on brake lines. Multiple owners report Subaru and dealerships refused warranty assistance for recurrent corrosion after recall service, citing geographic registration issues, mileage, or prior service completion. One dealership disputed recall-completion status despite NHTSA records showing completed.
Front rotor warping and excessive wear
Front brake rotors warp prematurely and brake pads wear excessively, causing vibration and loss of braking power. Owner suspects ABS malfunction; dealership attributed it to normal wear.
When: First occurrence at 14,000 miles; recurrence at 26,000 miles
Symptoms owners cite: Sudden, significant loss of braking power; Major vibrations during braking; Difficulty slowing vehicle
Repairs/costs cited: Dealer resurfaced rotors at first occurrence; replaced front rotors and brake pads at second occurrence. Owner notes the problem is repetitive despite repairs.
ABS (anti-lock brake system) failure
ABS fails during low-speed driving. One owner notes the system cannot be disconnected at the owner's request per dealership policy.
When: At 34,000 miles
Symptoms owners cite: Antilock brakes fail while driving at 25 mph
Repairs/costs cited: Owner requested system disconnection; dealership declined to perform this work.
Synthesized from 24 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
Hydraulic brake failure while driving. Upon brake application, pedal went to floor, had to use parking brake to stop vehicle. Inadequate, ineffective preventive recall done to brake lines as a rust proofing measure was done twice and lines still rusted through and perforated in rear near fuel tank. No evidence of wax sealant application present on areas of brake lines specified in recall.…
Tl* the contact owns a 2005 Subaru legacy. While operating the vehicle, the brake sensor suddenly illuminated. Moments later, the bakes failed and the brake pedal extended to the floor. The vehicle was towed to the dealer where it was diagnosed that the brake lines positioned above the fuel tank were corroded and caused the brake fluid to leak out. The contact was informed by the dealer that the…
The vehicles brake lines have corroded and started to leak, resulting in the stopping distance increasing and the vehicle not being safe to drive. When getting the airbag recall performed at the Subaru dealership 3 years ago I mentioned the brake line recall. They stated they inspected the lines, and no issue was present. There is now an obvious issue with the brake line corroding and failing.…
Had brakes trouble with your 2005 Subaru Legacy?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the brakes problem on the 2005 Subaru Legacy?
It's a documented issue but not catastrophic. 24 complaints have been filed. Repairs average $450 and most owners catch it before it causes a breakdown.
At what mileage does the brakes typically fail?
Across the 16 complaints that reported odometer mileage, most brakes failures cluster between 115,000 and 191,000 miles, with the median around 130,000. A quarter of owners report trouble before 115,000; a quarter make it past 191,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $450 for brakes repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to brakes?
No active recalls currently cover brakes issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2005/Subaru/Legacy.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.