Built from official NHTSA complaint and recall data · data through 07/14/2026
High complaint levelIts most-reported problem — Structure:body — runs 5.6× the fleet median for that category across the 1175 model-years tracked on this site.
152Complaints
1Recalls
6Crashes
5Fires
9Injured
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 — Structure:body (17.1% of complaints) — has no NHTSA recall or open investigation on file.
Structure:body complaints here are 5.6× the median for that category across the 1175 model-years tracked on this site.
None of the 6 most-reported categories on this page have a recall or open investigation on file — they rest on unverified owner reports alone.
Complaint category
Reports
Official status
Reference
Structure:body
26 · 17.1%
No official action
—
Power Train:automatic Transmission
19 · 12.5%
Investigation closed
EA09013
Structure:body:hatchback/liftgate
15 · 9.9%
No official action
—
Power Train
15 · 9.9%
Investigation closed
EA09013
Electrical System
10 · 6.6%
No official action
—
Structure
9 · 5.9%
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 152 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.
IN THE EVENT OF A VEHICLE CRASH, THE OCCUPANT(S) MAY BE SERIOUSLY INJURED BY SHATTERED GLASS. 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
“WE HAVE EXPERIENCED TWO WELL KNOWN ISSUES WITH THE EXPLORER/MOUNTAINEER. THE BODY PANEL ON THE BACK HATCH IS CRACKED IN THE MIDDLE AND FRIDAY WE…”NHTSA complaint 10423238 — filed 09/04/2011 · STRUCTURE:BODY
“THE CONTACT OWNS A 2003 MERCURY MOUNTAINEER. THE CONTACT STATED THAT THE REAR DECKLID PANEL WAS CRACKED DUE TO THE COLDER WEATHER TEMPERATURES. THE VEHICLE…”NHTSA complaint 10392156 — filed 03/18/2011 · STRUCTURE:BODY
“2003 MERCURY MOUNTAINEER CRACKED PANEL ON BACK LIFT GATE FROM WINDOW AROUND RIGHT SIDE OF ROUND EMBLEM TO BOTTOM. SECOND TIME THIS HAS HAPPENED. FIRST…”NHTSA complaint 10375390 — filed 01/10/2011 · STRUCTURE:BODY
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 2003 Mercury Mountaineer?
Structure:body issues are the most-reported category, cited in 26 of 152 NHTSA complaints (17.1%), followed by power train:automatic transmission (19), structure:body:hatchback/liftgate (15), power train (15). Complaints are unverified owner reports.
How many complaints does the 2003 Mercury Mountaineer have?
152 complaints were on file with NHTSA as of 07/14/2026. Of those, 6 involved a crash, 5 involved a fire, and 9 reported injuries. No deaths were reported.
Does the 2003 Mercury Mountaineer have any recalls?
Yes — 1 NHTSA safety recall campaign, including campaign 07E104000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.
Has NHTSA acted on the 2003 Mercury Mountaineer's reported problems?
0 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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