2007 Mercury Mariner Hybrid Problems
- Complaints
- 31filed with NHTSA
- Median mileage
- 70,000miles, 28 complaints with mileage
- Recalls
- 0campaigns on record
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
- NHTSA crash rating
- —overall rating starts with 2011 models
- EPA fuel economy
- 27 mpgcombined, 2.3L 4-cyl · hybrid 4WD/AWD · 28 city / 27 hwy
Sources: NHTSA records for the 2007 Mercury Mariner Hybrid (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error
NHTSA recorded 31 consumer complaints for the 2007 Mercury Mariner Hybrid. The part named most often is brakes, with 8 complaints (26% of the total), followed by engine cooling (6) and electrical system (4). 28 of the complaints include a mileage, and 7% of those were filed for vehicles with under 50,000 miles; the median is 70,000 miles. Of all complaints, 1 involved a crash, 1 an injury, according to the filers. NHTSA lists 0 recall campaigns and 6 technical service bulletins for this model year. Brakes complaints overlap with 2 technical service bulletins filed under the same part. Engine cooling complaints overlap with 2 technical service bulletins filed under the same part.
Not compared (before 2008). Model years 2008–2023 of the same vehicle that have at least 25 complaints are compared, and a model needs at least 3 of them.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Brakes8 26%
- Engine cooling6 19%
- Electrical system4 13%
- Engine4 13%
- Hybrid propulsion system3 9.7%
- Other or unknown3 9.7%
- Fuel system2 6.5%
- Steering2 6.5%
- Body and structure2 6.5%
Also reported: Equipment (1), Seats (1), Suspension (1).
Example complaints
Brakes: “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 milesEngine cooling: “While I was driving my 2007 Mercury Mariner Hybrid at 65 MPH on a highway, the red triangle came on and the message stop safely now. The car completely and suddenly lost all power. I tried to give it some gas but to no avail. I pulled over, shut it off for a few minutes, and then was able to restart it and make it home. I have 64,000 miles on the car. I see that there are service bulletins describing this problem, but am upset that I was not informed about it, especially since the warranty goes to 60,000 miles.”
NHTSA complaint #10342552, filed 2010-07, 64,680 milesElectrical system: “My 22 year old daughter was driving my 2007 Mercury Mariner Hybrid back to college after spring break at home. She was traveling at 75 MPH in the fast lane and the engine just quit. She had been driving for several hours at freeway speed. The stop safely light comes on and she was able to get to the right shoulder on electric power. Very scary! She waited 10 minutes and it fired back up and she was able to continue on to school another half hour. But she is now unsure when and if it will happen again. I purchased the vehicle used four years ago and it now has 70,000 miles. …”
NHTSA complaint #10507028, filed 2013-04, 70,000 milesEngine: “Travelling on illinois I-55 south early in the morning. About 2 miles north of us highway 6 exit car lost power and I noticed stop safely now message. I pulled off to side of road. Car started right up. I went about a 2 miles and car did the exact same thing. I was real close to the golf course and made it there. No problems on the way home or since. Car never acted or sounded ?funny?. Car repaired by local lincoln ford dealer. They said they replaced an engine coolant pump ($695 including labor and taxes) that is unique to hybrid. …”
NHTSA complaint #10459312, filed 2012-05, 70,100 milesMileage when problems were reported
7% of the 28 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 64,680 and 89,935 miles.
Complaints by year filed
Trend: rising. Complaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
Crash test ratings
NHTSA's 5-Star Safety Ratings for the 2007 Mercury Mariner Hybrid. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.
| Version | Overall | Frontal | Side | Side pole | Rollover |
|---|---|---|---|---|---|
| Mariner Hybrid · sedan FWD/AWD | not rated | 4 / 4 | — | — | — |
Ratings before the 2011 model year come from an older, less demanding test and are not comparable with ratings for 2011 and later.
Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.
Fuel economy and running cost
EPA ratings for each 2007 Mercury Mariner Hybrid version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| Mariner Hybrid 4WD | 2.3L 4-cyl · hybrid | CVT | 28 | 27 | 27 | $2,500 |
Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.
Recalls and investigations
NHTSA lists no recall campaigns for the 2007 Mercury Mariner Hybrid in the data used here. A recall can apply to some vehicles of a model year and not others, so check a specific vehicle by VIN at nhtsa.gov/recalls.
Technical service bulletins
TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 6 on record; the latest 6 are shown.
- 10081014Jun 8, 2016Brakes. 2005-2008 escape/mariner hybrid - anti-lock brake system (abs) warning indicator illuminated with dtc(s) c1478, c1479, c1480 and/or c1481
- 10044212Mar 1, 2012Brakes. Ford/mercury: some hybrid vehicles may require a unique bleed procedure after a replacement for one or more of hydraulic brake system components.
- 10032614Apr 1, 2010Transmission and drivetrain. Ford: some hybrid vehicles may exhibit an intermittent red triangle on and stop safely now message displayed on the message center, accompanied by a sudden rpm loss/no start with a diagnostic…
- 10033035Dec 1, 2009Engine cooling, Electrical system. Ford/mercury: some vehicles may set diagnostic trouble codes (dtcs) p0a81 (battery pack cooling fan 1 control circuit) and/or p0a96 (battery pack cooling fan 2 control circuit) in the traction…
- 10029204Jun 1, 2009Equipment, Engine cooling, Electrical system. Ford/mercury: vehicles used in certain commercial applications such as taxi's and security services where extended low speed run time and extended idling may exhibit a red triangle light and codes…
- 10029164Jun 1, 2009Other or unknown, Equipment. Ford/mercury: vehicles may exhibit a red triangle light and codes indicating a transaxle overtemp. Condition may result in reduced power as system activates fail safe operation.
Other model years of the Mercury Mariner Hybrid
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2010 | 9 | 59,250 | 0 | — | 32 | — | Not enough data |
| 2009 | 21 | 93,000 | 0 | — | 32 | — | Stable |
| 2008 | 116 | 81,000 | 0 | — | 32 | Not compared (fewer than 3 comparable model years) | Falling |
| 2007 | 31 | 70,000 | 0 | — | 27 | Not compared (before 2008) | Rising |
| 2006 | 34 | 104,000 | 0 | — | 27 | Not compared (before 2008) | Falling |
All Mercury Mariner Hybrid model years · Best and worst years by complaints
Frequently asked questions
How many NHTSA complaints does the 2007 Mercury Mariner Hybrid have?
NHTSA recorded 31 consumer complaints for the 2007 Mercury Mariner Hybrid as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2007 Mercury Mariner Hybrid is reported most often?
Brakes is named most often, in 8 complaints (26% of the total), followed by engine cooling with 6.
Has the 2007 Mercury Mariner Hybrid been recalled?
NHTSA lists no recall campaigns for this model year in the data used here. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
What gas mileage does the 2007 Mercury Mariner Hybrid get?
The EPA rates the 2007 Mercury Mariner Hybrid (Mariner Hybrid 4WD, 2.3L 4-cyl · hybrid) at 27 mpg combined, 28 city and 27 highway, with an estimated annual fuel cost of $2,500 at 15,000 miles a year. Other engine and drive versions are rated differently.
At what mileage are problems with the 2007 Mercury Mariner Hybrid reported?
Among the 28 complaints that include a mileage, the median is 70,000 miles and the middle half falls between 64,680 and 89,935 miles; 7% were filed for vehicles with under 50,000 miles.
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. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.