2010 Mercury Mariner Engine Problems

NHTSA component category: ENGINE · data through 07/14/2026

61Engine complaints

22.7%Of all 269 complaints

#2Most-reported category

Source: U.S. NHTSA complaint data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.

How engine ranks on this vehicle

VEHICLE SPEED CONTROL66 · 24.5%

ENGINE61 · 22.7%

STEERING59 · 21.9%

POWER TRAIN57 · 21.2%

FUEL/PROPULSION SYSTEM57 · 21.2%

Share of the 269 complaints citing each category; one complaint can cite several. Full breakdown on the 2010 Mercury Mariner overview page.

What owners report

“WE WERE TRAVELING DOWN THE HIGHWAY AT 60 MPH WHEN THE ENGINE WENT DEAD LIKE THE SWITCH WAS CUT OFF. I TRIED TO RESTART THE…”NHTSA complaint 10542223 — filed 09/06/2013

“VEHICLE LOOSING POWER AND THE CHECK ENGINE LIGHT COMES ON, U WILL HAVE TO SHUT VEHICLE OFF AND RE CRANK IT.”NHTSA complaint 10538344 — filed 09/02/2013

“I WAS LEAVING A SOCCER GAME AND THE CAR WENT TO ABOUT 40 MPS AND THE WRENCH LIGHT CAME ON AND THE PEDAL WENT LIMP…”NHTSA complaint 10538244 — filed 08/31/2013

Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.

Engine complaints by year filed

Frequently asked questions

Does the 2010 Mercury Mariner have engine problems?

Engine is the #2 most-reported problem area on the 2010 Mercury Mariner: 61 of 269 complaints on file (22.7%). Complaints are unverified owner reports, not confirmed defects.

How many complaints does the 2010 Mercury Mariner have in total?

269 complaints were on file with NHTSA as of 07/14/2026. Across all categories, 2 involved a crash, 2 involved a fire, 6 reported injuries, and none reported deaths.

What does NHTSA's engine category include?

NHTSA assigns each complaint to standard component categories; this page reports the ENGINE category exactly as NHTSA defines and records it.

About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/14/2026.