YearToAvoid

2007 Mercury Mariner Hybrid Reliability Data: Problems & Recalls

Caution The 2007 Mercury Mariner Hybrid has a complaint index of 60 and ranks 3rd worst out of 6 model years, earning a Caution verdict. Engine problems dominate at 32% of complaints, mainly sudden stalling with a "stop safely now" warning, with a median failure mileage of 65,000.

Based on NHTSA complaints per model-year, not a reliability rating. Methodology

YearToAvoid Scorecard

Complaint Index
60/100
#3 of 6 Mariner Hybrid years
Verdict
Caution
vs. other years of this model
Complaints
31
unique NHTSA reports
Recalls
0
distinct NHTSA campaigns
Crashes
1
reported in complaints
Fires
0
Injuries
1
Top issue
Engine
Best nearby year
2010
rated Best
NHTSA overall rating
Not rated
EPA combined MPG
27
28 city / 27 hwy
Injuries / deaths
1 / 0

Top 2007 Mercury Mariner Hybrid problems

Share of this year’s NHTSA complaints by component group. Groups with 15+ complaints have their own page.

  1. Engine10 (32%)
  2. Brakes8 (26%)
  3. Fuel System5 (16%)
  4. Electrical System4 (13%)
  5. Other3 (10%)
  6. Structure & Body3 (10%)
  7. Transmission & Powertrain3 (10%)
  8. Steering2 (6%)
  9. Suspension, Wheels & Tires1 (3%)

A complaint can list more than one component, so shares add up to more than 100%. Shares are % of complaints.

What owners report

  • Vehicle suddenly loses power and displays a "stop safely now" message, sometimes at highway speeds around 65 mph.
  • Engine shuts off without warning; dealers have traced this to the hybrid battery cooling system in at least one case.
  • ABS and "service brake system" warning lights appear along with brake pulsation, linked to failing tone rings that owners say need repeat replacement.
  • Electrical system faults trigger stalling along with temperature and service engine wrench lights coming on frequently.
  • A child safety seat reportedly does not fit properly in the rear seat without using an unapproved spacer.
2007 Mercury Mariner Hybrid complaints: complaints filed per month2Apr 2010Mar 2011May 2012Aug 2013Jan 2015Jan 2016Sep 2023
31 complaints filed with NHTSA from Apr 2010 to Sep 2023; peak Jul 2010 (2).

2007 Mercury Mariner Hybrid recalls

No safety recalls on record for this model year.

2007 Mercury Mariner Hybrid fuel economy and fuel cost

City
28 MPG
Highway
27 MPG
Combined
27 MPG
Annual fuel cost (EPA)
$2,400
15,000 mi/yr
Fuel
Regular
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2007 compared with other Mariner Hybrid years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100200620072008200920102012
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2006Good4034027
2007Caution6031027
2008Avoid100116030
2009Avoid8021030

All Mercury Mariner Hybrid years: best and worst →

Frequently asked questions

Is the 2007 Mercury Mariner Hybrid reliable?
NHTSA data gives the 2007 model a complaint index of 60, the third worst of 6 model years tracked for the Mariner Hybrid, resulting in a Caution verdict relative to other years.
What is the main problem with the 2007 Mercury Mariner Hybrid?
Engine issues are the top complaint area, making up 32% of complaints, with owners describing sudden stalling and "stop safely now" warnings at a median mileage of 65,000.
Does the 2007 Mercury Mariner Hybrid have any recalls?
NHTSA lists zero recalls for the 2007 Mariner Hybrid.
How does the 2007 Mariner Hybrid compare to other years?
The 2007 model (complaint index 60) is worse than 2006 (40, Good) and 2010 (20, Best), but better than 2008 (100, Avoid) and 2009 (80, Avoid).
What is the fuel economy of the 2007 Mercury Mariner Hybrid?
EPA rates it at 27 mpg combined (28 city / 27 highway), with an estimated annual fuel cost of $2,400.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.