Built from official NHTSA complaint and recall data · data through 07/14/2026
High complaint levelIts most-reported problem — Vehicle Speed Control — runs 4.8× the fleet median for that category across the 1732 model-years tracked on this site.
269Complaints
3Recalls
2Crashes
2Fires
6Injured
0Deaths
Source: U.S. NHTSA complaint & recall data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
Is this problem acknowledged?
The most-reported problem — Vehicle Speed Control (24.5% of complaints) — has no NHTSA recall or open investigation on file.
Vehicle Speed Control complaints here are 4.8× the median for that category across the 1732 model-years tracked on this site.
2 of the 6 most-reported categories on this page are backed by a recall or open investigation; the other 4 rest on owner reports alone.
Complaint category
Reports
Official status
Reference
Vehicle Speed Control
66 · 24.5%
No official action
—
Engine
61 · 22.7%
Investigation closed
PE13003
Steering
59 · 21.9%
Recalled
Recall 14V284000
Power Train
57 · 21.2%
No official action
—
Fuel/propulsion System
57 · 21.2%
Recalled
Recall 16V777000
Electrical System
28 · 10.4%
No official action
—
Recalled = an NHTSA safety recall covers this category, so a free repair exists. Under investigation = NHTSA has an open probe but no recall yet. Investigation closed = NHTSA examined it and closed the probe — this is not a defect finding; where a closed probe led to a recall we name the campaign. Not available = recall or investigation data could not be confirmed for this vehicle — it is not a “no”. Categories are matched by NHTSA's top-level component. Check your VIN at nhtsa.gov/recalls.
Percentages are the share of the 269 complaints citing each component; one complaint can cite several components. “Unspecified / other” is NHTSA’s own catch-all category — we show it rather than hide it.
Use of an incorrectly sized wheel bearing can adversely affect the braking and steering of the vehicle, increasing the risk of a crash. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
If power steering assist is lost, greater driver effort would be required to steer the vehicle at low speeds, increasing the risk of a crash. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
Park itPark outside Specimen badges — shown on a recall card only when NHTSA sets the flag. None of the campaigns above carries either flag. Always check your own vehicle by VIN at nhtsa.gov/recalls.
What owners report
“THROTTLE BODY IS GONE I GET THE P2111 CODE THIS PART IS COSTING ME 440.00 DOLLARS THE WARRANTY THE COMPANY SOLD ME DOES NOT COVER…”NHTSA complaint 10546413 — filed 10/01/2013 · VEHICLE SPEED CONTROL
“DRIVING AND THE VEHICLE JUST SLOWED DOWN AND WAS NOT GETTING FUEL. I PULLED TO THE SHOULDER THE CAR WAS STILL RUNNING BUT NOT GETTING…”NHTSA complaint 10545669 — filed 09/27/2013 · VEHICLE SPEED CONTROL
“THE CONTACT OWNS A 2010 MERCURY MARINER. THE CONTACT STATED WHILE DRIVING 70 MPH THE VEHICLE SUDDENLY STALLED. THE CHECK ENGINE WARNING LIGHT ILLUMINATED AND…”NHTSA complaint 10543346 — filed 09/12/2013 · VEHICLE SPEED CONTROL
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Complaint trend by year filed
Frequently asked questions
What are the most common problems with the 2010 Mercury Mariner?
Vehicle speed control issues are the most-reported category, cited in 66 of 269 NHTSA complaints (24.5%), followed by engine (61), steering (59), power train (57). Complaints are unverified owner reports.
How many complaints does the 2010 Mercury Mariner have?
269 complaints were on file with NHTSA as of 07/14/2026. Of those, 2 involved a crash, 2 involved a fire, and 6 reported injuries. No deaths were reported.
Does the 2010 Mercury Mariner have any recalls?
Yes — 3 NHTSA safety recall campaigns, including campaign 16V777000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.
Has NHTSA acted on the 2010 Mercury Mariner's reported problems?
2 of the 6 most-reported complaint categories on this page are backed by an NHTSA safety recall or open investigation; the rest are unverified owner reports. A recall means a free repair is available at authorized dealers.
Is a complaint proof of a defect?
No. Complaints are reports submitted by consumers to NHTSA. NHTSA does not verify individual complaints, and a complaint is not proof that a defect exists.
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.
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