2009 Mercury Mariner Hybrid Problems
- Complaints
- 21filed with NHTSA
- Median mileage
- 93,000miles, 21 complaints with mileage
- Recalls
- 0campaigns on record
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
- NHTSA crash rating
- —overall rating starts with 2011 models
- EPA fuel economy
- 32 mpgcombined, 2.5L 4-cyl · hybrid FWD · 34 city / 31 hwy
Sources: NHTSA records for the 2009 Mercury Mariner Hybrid (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error
NHTSA recorded 21 consumer complaints for the 2009 Mercury Mariner Hybrid. The part named most often is steering, with 8 complaints (38% of the total), followed by vehicle speed control (6) and brakes (4). 21 of the complaints include a mileage, and 29% of those were filed for vehicles with under 50,000 miles; the median is 93,000 miles. Of all complaints, 2 involved a crash, according to the filers. NHTSA lists 0 recall campaigns and 2 technical service bulletins for this model year.
This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.
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.
- Steering8 38%
- Brakes4 19%
- Engine4 19%
- Electrical system3 14%
- Fuel system3 14%
Example complaints
Steering: “Vehicle steering is intermittently going out and driver is unable to turn the vehicle. I have contactted ford and there is an existing recall (14s05) for this very item and my vehicle (year, make & model) is listed but they say my specific vehicle does not qualify.”
NHTSA complaint #11209102, filed 2019-05, 160,000 milesVehicle speed control: “I was approaching a stop sign going about 15 MPH and the applied the brake. Instead of stopping, the car accelerated and I had to steer around a car in the intersection to avoid an accident. I applied the emergency brake and threw the car into park to stop it.”
NHTSA complaint #10820879, filed 2016-01, 88,181 milesBrakes: “Mercury Mariner Hybrid 2009 had it for 18 months and august 3, 2010 upon an approach to a stop light engaging the brakes I heard an audible warning sound and looked at my console to see the warning to check brakes, at that moment my brake pedal went soft and to the floor, I had to apply the emergency brake to stop the mariner to avoid hitting the vehicle in front of me. …”
NHTSA complaint #10347348, filed 2010-08, 40,000 milesEngine: “I was on my way to drop my 3 month old off at daycare and then to work. I was driving down the highway going 60 MPH with the cruise control set when I feel the car start to jerk back and forth a little. I look at my gauges all are normal except the RPM gauge is jumping up and down then all of a sudden it is kick out of cruise control, and I lose acceleration and a wrench light came on. I was almost hit by 2 vehicles because of the sudden lose on speed. As I was losing acceleration, I was trying not to brake because I thought it was going to die. …”
NHTSA complaint #11020561, filed 2017-08, 128,000 milesMileage when problems were reported
29% of the 21 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 40,000 and 123,250 miles.
Complaints by year filed
Trend: stable. Complaints filed in the last 3 full calendar years are within 25% of the 3 years before.
Crash test ratings
NHTSA's 5-Star Safety Ratings for the 2009 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 | 5 / 5 | — | — | 3 · 20.4% risk |
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 2009 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 | 2.5L 4-cyl · hybrid | CVT | 29 | 27 | 28 | $2,400 |
| Mariner Hybrid FWD | 2.5L 4-cyl · hybrid | CVT | 34 | 31 | 32 | $2,100 |
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 2009 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. 2 on record; the latest 2 are shown.
- 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.
- 10030846Dec 9, 2009Other or unknown. Ford/mercury: traction control light with dtc c1440. Some vehicles built may exhibit the traction control light on with dtc code c1440. If the vehicle is operated for an extended period following…
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 2009 Mercury Mariner Hybrid have?
NHTSA recorded 21 consumer complaints for the 2009 Mercury Mariner Hybrid as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2009 Mercury Mariner Hybrid is reported most often?
Steering is named most often, in 8 complaints (38% of the total), followed by vehicle speed control with 6.
Has the 2009 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 2009 Mercury Mariner Hybrid get?
The EPA rates the 2009 Mercury Mariner Hybrid (Mariner Hybrid FWD, 2.5L 4-cyl · hybrid) at 32 mpg combined, 34 city and 31 highway, with an estimated annual fuel cost of $2,100 at 15,000 miles a year. Other engine and drive versions are rated differently.
At what mileage are problems with the 2009 Mercury Mariner Hybrid reported?
Among the 21 complaints that include a mileage, the median is 93,000 miles and the middle half falls between 40,000 and 123,250 miles; 29% 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.