2009 Mercury Mariner reliability record
Every consumer complaint and recall the U.S. government (NHTSA) has on file for the 2009 Mercury Mariner — the repair risk behind the ownership cost.
- NHTSA complaints
- 422
- 73 in the last 5 years
- Top problem area
- STEERING
- 166 complaints
- Recalls on record
- 1
- see below
- Reported harm
- 11 reported crashes · 4 injuries
How this record compares
raw NHTSA counts, not defect ratesComplaint rank
#1,239
of 4,194 vehicle records
Vs Mercury median
+193
median 229 across 90 Mercury records
Vs 2007-2011
+163
median 260 complaints in 736 records
Top component share
39%
Steering: 166 complaints
What owners report fails — 2009 Mercury Mariner
- STEERING 166
- ENGINE 53
- VEHICLE SPEED CONTROL 41
- POWER TRAIN 41
- ELECTRICAL SYSTEM 21
1 recall on record for the 2009 Mercury Mariner
- NHTSA 14V284000 · 2014 · STEERING:ELECTRIC POWER ASSIST SYSTEM If power steering assist is lost, greater driver effort would be required to steer the vehicle at low speeds, increasing
Estimate the 5-year cost to own a 2009 Mercury Mariner
A vehicle's complaint record hints at the repair and maintenance budget you'll need. Add your state, purchase price, and mileage to the TCO calculator for the full picture.
Open TCO calculatorThese are unverified consumer reports and manufacturer recalls filed with the National Highway Traffic Safety Administration — not validated defect rates, and not adjusted for how many 2009 Mercury Mariner units were produced or sold. High-volume and older vehicles naturally accumulate more complaints. Use this as one research signal, not a verdict on any individual vehicle. Data as of 2026. Source: NHTSA Office of Defects Investigation (public domain).
Frequently asked questions
Is the 2009 Mercury Mariner reliable?
NHTSA has 422 consumer complaints on record for the 2009 Mercury Mariner and 1 recall. The most-reported problem area is steering (166 reports). These are unverified consumer reports filed with the government, not validated failure rates, and are not adjusted for how many 2009 Mercury Mariner units were produced — popular vehicles naturally accumulate more reports.
What are the most common problems with the 2009 Mercury Mariner?
Owners most often report problems with: steering (166), engine (53), vehicle speed control (41), power train (41). Each figure is the number of complaints filed with NHTSA for this exact model year.
How much does it cost to own a 2009 Mercury Mariner?
Ownership cost depends on your state taxes, insurance, fuel, and the maintenance the vehicle's reliability record implies. Use the CarOutlay 5-year TCO calculator to estimate the full cost including the repair risk this complaint record suggests.