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BrakesPart report

2007 Mercury Mariner Hybrid Brakes Problems

Complaints
8about this part
Share
26%of 31 total for the year
Median mileage
86,968miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 8 complaints about the brakes of the 2007 Mercury Mariner Hybrid, 26% of the 31 complaints for this model year. Where a mileage was given, the median is 86,968 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The brake system's hydraulic control unit ( hcu ). On several occasions while driving, the brake pedal will travel to the floor while trying to brake resulting in no braking action (ie., vehicle not slowing). This might happen for one or two pedal depressions before there is any slowing of the vehicle. This problem has placed me in situations where I have to take evasive action to not hit a vehicle in front of me, or traveling into a controlled (with stop signs) intersection. …”

NHTSA complaint #10891719, filed 2016-07, 94,500 miles

“I was traveling with my 15 month old son driving roughly 45 miles an hour on a multilane street when the ABS light (orange) and a exclamation point light (red) turned on and my digital read out said service brakes. I would estimate that I lost 75% of my braking power. Due to the lack of stopping power I had to swerve onto a shoulder to avoid colliding with the car in front of me as my car gradually slowed down. I ended up in a turn lane which thankfully was clear at the time. I would estimate that my car required and extra 5 to 6 vehicle lengths to stop. …”

NHTSA complaint #10672925, filed 2015-01, 106,000 miles

“My son was coming to an intersection of a main road from a side street and when he went to step on the brake the SUV would not stop he didn't expect this and pushed down as hard as he could if stopped out in the main road lucky no one was out there. I have checked on the web and a lot of people have had the same problem it seam to be something with the electric brake system that stops the SUV. I uses mostly the regenerating system to stop the SUV not the pad only a little is use so if the system has a problem you have a danger of not stopping as quickly as expected..... …”

NHTSA complaint #10632895, filed 2014-09, 120,000 miles

“Was driving on highway - when ABS light came on, then service brake system, service 4x4, regen disabled displayed on display. Tested brakes and appeared that they were still functioning, brought car to dealer next morning, dealer replaced ABS ring.”

NHTSA complaint #10464203, filed 2012-07, 52,660 miles

“Intermittent failure of the ABS system due to broken ABS exciter ring. Caused uncontrolled skidding on smooth parking lot and jittery braking in traffic conditions at about 30 MPH.”

NHTSA complaint #10660840, filed 2014-11, 89,935 miles

Related service bulletins

Brakes: other model years

YearComplaintsShare of year
2010111%
2009419%
20083429%
2007826%
20061338%

Other parts of the 2007 Mercury Mariner Hybrid

Engine cooling
6 complaints
Electrical system
4 complaints
Engine
4 complaints
Hybrid propulsion system
3 complaints
Other or unknown
3 complaints
Transmission and drivetrain
3 complaints
Fuel system
2 complaints
Steering
2 complaints
Body and structure
2 complaints
Equipment
1 complaints
Seats
1 complaints
Suspension
1 complaints

← All problems reported for the 2007 Mercury Mariner Hybrid

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology