YearToAvoid

2008 Mercury Mariner Hybrid Problems, Recalls & Reliability

Verdict

Avoid

Complaint Index

100/100

#1 most-complained of 6 Mariner Hybrid years

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

The 2008 Mercury Mariner Hybrid has 116 owner complaints and 0 safety recalls on file with NHTSA. Its Complaint Index is 100 out of 100 — the highest of 6 Mariner Hybrid model years (verdict: Avoid). The most reported problem area is engine (44 complaints, 38% of the total). Complaints report 2 crashes.

Complaints
116
Recalls
0
Crashes / fires
2 / 0
Injuries / deaths
0 / 0
NHTSA overall rating
Not rated
EPA combined MPG
30
31.5 city / 28.5 hwy

Top 2008 Mercury Mariner Hybrid problems

NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.

  1. Engine44 (38%)
  2. Brakes35 (30%)
  3. Steering24 (21%)
  4. Electrical System22 (19%)
  5. Fuel System20 (17%)
  6. Transmission & Powertrain16 (14%)
  7. Other5 (4%)
  8. Structure & Body1 (1%)
2008 Mercury Mariner Hybrid complaints: complaints filed per quarter192010 Q12011 Q32013 Q12014 Q32016 Q22017 Q42019 Q2
167 complaints filed with NHTSA from 2010 Q1 to 2023 Q4; peak 2014 Q3 (19).

2008 Mercury Mariner Hybrid recalls

No safety recalls on record for this model year.

2008 Mercury Mariner Hybrid fuel economy and fuel cost

City
31.5 MPG
Highway
28.5 MPG
Combined
30 MPG
Annual fuel cost (EPA)
$2,175
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.

2008 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
2010Best209030.5

All Mercury Mariner Hybrid years: best and worst →

Frequently asked questions

Is the 2008 Mercury Mariner Hybrid a reliable year?
Judged by NHTSA owner complaints and recalls, the 2008 Mercury Mariner Hybrid ranks worst among Mariner Hybrid model years (Complaint Index 100/100, verdict: Avoid). It has 116 complaints and 0 recalls on file. This reflects reported safety-related problems, not an overall reliability rating.
What are the most common problems with the 2008 Mercury Mariner Hybrid?
The most reported problem areas are engine (44 complaints), brakes (35 complaints), and steering (24 complaints). The median mileage at the time of failure in complaints that report it is 81,000 miles.
Does the 2008 Mercury Mariner Hybrid have any recalls?
No safety recall campaigns list the 2008 Mercury Mariner Hybrid in NHTSA’s recall database at the time of the last data update.
What is the fuel economy of the 2008 Mercury Mariner Hybrid?
EPA rates the 2008 Mercury Mariner Hybrid at 30 MPG combined (31.5 city / 28.5 highway), with an estimated annual fuel cost of $2,175. Where several configurations exist, the median is shown.

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.