2009 Mercury Mariner engine problems
The 2009 Mercury Mariner has 60 engine complaints filed with NHTSA — 14% of the year's total, and up sharply from the prior model year.
60
Engine complaints
14%
Share of year
0
Crash-involved
0
Related recalls
Engine complaints by year
What owners report
“TL* THE CONTACT OWNS A 2009 MERCURY MARINER. THE CONTACT STATED THAT WHILE AT AN INTERSECTION MAKING A LEFT TURN, THE POWER STEERING FAILED. THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE…”
Common questions
How many engine complaints does the 2009 Mercury Mariner have?
NHTSA has 60 complaints about the 2009 Mercury Mariner engine — 14% of all complaints filed for that model year.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.