Toyota Avalon Service Brakes, Hydraulic Problems

Source: NHTSA · Updated Sep 15, 2026 · 150 complaints analyzed

Owners have filed 150 complaints with NHTSA about service brakes, hydraulic problems on the Toyota Avalon across 18 model years. The 2005 model year has the most (17). The words owners use most often: “master cylinder” (13% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Master cylinder: mentioned in 20 of 150 complaints (13%)
  • Brake fluid: mentioned in 10 of 150 complaints (7%)

At what mileage do service brakes, hydraulic problems happen?

Based on 74 complaints that reported the odometer reading.

Under 10k miles14 · 19%
10k–25k miles14 · 19%
25k–50k miles21 · 28%
50k–75k miles8 · 11%
75k–100k miles6 · 8%
100k–150k miles7 · 9%
150k+ miles4 · 5%

How serious are the reports?

Of 150 complaints, 28 mention a crash, 1 a fire, 7 an injury.

Toyota Avalon service brakes, hydraulic complaints by model year

Peak: 2005, with 17 complaints
1995: 9199591996: 10101997: 7199771998: 11111999: 6199962000: 15152001: 112001112002: 882003: 112003112004: 442005: 172005172006: 17172007: 132007132008: 332009: 4200942011: 222014: 1201412015: 11

n = 150 complaints · Source: NHTSA

Model yearService Brakes, Hydraulic complaintsShare of that yearMedian miles
2015 Avalon12%83,829
2014 Avalon11%3,900
2011 Avalon22%645
2009 Avalon44%2,906
2008 Avalon31%42,600
2007 Avalon135%31,726
2006 Avalon175%28,000
2005 Avalon177%52,877
2004 Avalon42%30,000
2003 Avalon114%31,000
2002 Avalon87%94,000
2001 Avalon118%17,217
2000 Avalon159%28,377
1999 Avalon67%131,000
1998 Avalon116%45,920
1997 Avalon76%—
1996 Avalon109%—
1995 Avalon911%—

When owners reported it

Peak: 2010, with 38 complaints
1995: 119951996: 41997: 819971998: 21999: 719992000: 132001: 820012002: 122003: 520032004: 42005: 820052006: 52007: 320072008: 42009: 620092010: 38382011: 820112012: 42013: 320132014: 22015: 220152020: 12025: 22025

n = 150 complaints · Source: NHTSA

Related recalls (2)

Service brakes, hydraulic:foundation components:master cylinderOct 21, 2010 · NHTSA campaign 10V499000 · 728,544 vehicles

Model years: 2005, 2006

Problem: Toyota is recalling certain model year 2005-2006 avalon, model year 2004-2006 highlander, model year 2004-2006 lexus rx, and model year 2006 lexus gs and is vehicles. Brake fluid containing polymers is used that acts as lubricants for certain brake system components. If replacement brake fluid is used that does not contain such polymers, or that contains only small amounts, a part of the rubber seal located at the rear of the brake master cylinder may become dry, and the seal may curl during movement of the piston. If this occurs, a small amount of brake fluid could slowly leak from the seal into the brake booster.

Risk: A leak of brake fluid could lead to a change in brake pedal feel and overtime a degradation in braking performance increasing the risk of a crash.

Fix: Dealers will replace the seal with a newly designed one. This service will be performed free of charge. The safety recall began on november 15, 2010. Owners may contact toyota at 1-800-331-4331 and lexus at 1-800-255-3987.

Service brakes, hydraulic:power assistSep 17, 1997 · NHTSA campaign 97V156000 · 18,746 vehicles

Model years: 1997

Problem: Vehicle description: passenger vehicles originally sold or currently registered in the states of alaska, colorado, idaho, illinois, iowa, kansas, maine, michigan,minnesota, montana, nebraska, nevada, new hampshire, new york, noth dakota, south dakota, vermont, wisconsin, and wyoming. A condition can occur where accumulated moisture can temporarily freeze in the brake vacuum hose if the vehicle is used in extremely cold climates for an extended period of time.

Risk: This can result in the elimination of vacuum assist to the brakes that can increase stopping distances and could lead to a vehicle crash.

Fix: Dealers will install a new design brake vacuum hose.

What owners report

Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.

The contact owns a 2015 Toyota Avalon. The contact stated that while driving at an undisclosed speed, there was an abnormal grinding sound coming from the brakes. The contact stated that the brake warning light illuminated, and the brake independently activated. The vehicle was taken to a specialty…

Received Aug 14, 2025 · NHTSA complaint 11680608

The contact owns a 2000 Toyota Avalon. The contact stated that the brake line was leaking brake fluid. The brake pedal was depressed and went to the floorboard. The contact stated that the subframe and rear axle were rusted. The contact had replaced the brakes. The contact stated that the failure…

Received Apr 18, 2025 · NHTSA complaint 11655498

Tl* the contact owns a 2005 toyota avalon. The contact stated that while driving, the brake pedal was depressed and became soft. The brake pedal was pumped several times to fix the issue. There was no warning. The dealer was not called. The failure recurred several times. The vehicle was taken to…

Received Jun 4, 2020 · NHTSA complaint 11327246

On april 17, 2012 bayside toyota replaced the brake master cylinder seal on the avalon under recall# 10v499000. Almost exactly 3 years later on april 18, 2015 the brake master cylinder seal failed as i was backing the car out of my garage. I was able to use my parking brake to stop the vehicle…

Received Apr 21, 2015 · NHTSA complaint 10711895

I have a safety concern with the brakes slow to stop. I have replaced them i think twice through toyota. But the issue never seem to totally go away. Below is the issue showing i am not the only one with this safety problem. But toyota refuse to acknowledge this problem is real even with the…

Received Feb 17, 2015 · NHTSA complaint 10683921
Toyota Avalon
TOYOTA AVALON China. Representative photo; appearance varies by model year. Photo: Dinkun Chen, CC BY-SA 4.0, via Wikimedia Commons.

Frequently asked questions

Do all Toyota Avalons have service brakes, hydraulic problems?

No. NHTSA has 150 owner complaints about service brakes, hydraulic for the Toyota Avalon. Complaint data shows that the problem is reported, not how many of all cars sold are affected.

Was there a recall on the Toyota Avalon service brakes, hydraulic?

Yes: 2 safety recalls list service brakes, hydraulic. Check your VIN on NHTSA.gov to see whether the fix was done on your car.

What do owners say about service brakes, hydraulic problems on the Toyota Avalon?

The most frequent phrase is “master cylinder”, in 20 of 150 complaints, followed by “brake fluid” (10).

Other Toyota Avalon problems

See all Toyota Avalon problems.