Built from official NHTSA complaint and recall data · data through 07/14/2026
High complaint levelIts most-reported problem — Exterior Lighting — runs 10.1× the fleet median for that category across the 719 model-years tracked on this site.
487Complaints
5Recalls
24Crashes
5Fires
21Injured
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 — Exterior Lighting (53.4% of complaints) — is covered by 1 NHTSA recall campaign.
Exterior Lighting complaints here are 10.1× the median for that category across the 719 model-years tracked on this site.
3 of the 6 most-reported categories on this page are backed by a recall or open investigation; the other 3 rest on owner reports alone.
Complaint category
Reports
Official status
Reference
Exterior Lighting
260 · 53.4%
Recalled
Recall 15V861000
Electrical System
70 · 14.4%
Recalled
Recall 05V518000
Air Bags
63 · 12.9%
No official action
—
Exterior Lighting:headlights
39 · 8%
Recalled
Recall 15V861000
Seat Belts
35 · 7.2%
No official action
—
Vehicle Speed Control
34 · 7%
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 487 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.
Improper servicing of the upper intermediate shaft could cause the shaft to separate, which can then result in a loss of steering control, and 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 the lower bearing separates, the vehicle may experience a loss of steering, increasing the risk of a crash. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
FAILURE OF THIS CONNECTION COULD LEAD TO FUEL SPILLAGE AND, IN THE PRESENCE OF AN IGNITION SOURCE, A FIRE COULD OCCUR. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
THIS CONDITION MAY RESULT IN HEAT DAMAGE AND COULD LEAD TO A FIRE. 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
“THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. THE CONTACT WAS DRIVING 65 MPH WHEN THE HEADLIGHTS ILLUMINATED UNEXPECTEDLY AND FAILED TO WORK PROPERLY. THE…”NHTSA complaint 10442499 — filed 01/05/2012 · EXTERIOR LIGHTING
“THE HEADLIGHTS DO NOT TURN ON AUTOMATICALLY OR MANUALLY, DAY OR DARK AT NIGHT, UNLESS YOU USE THE BRIGHT LIGHTS. HE LIGHTS WILL NOT TURN…”NHTSA complaint 10430653 — filed 10/18/2011 · EXTERIOR LIGHTING
“THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE HEADLIGHTS AND HIGH BEAM HEADLIGHTS FAILED WITHOUT WARNING. THE CONTACT WENT TO…”NHTSA complaint 10430232 — filed 10/14/2011 · EXTERIOR LIGHTING
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 2005 Mercury Grand Marquis?
Exterior lighting issues are the most-reported category, cited in 260 of 487 NHTSA complaints (53.4%), followed by electrical system (70), air bags (63), exterior lighting:headlights (39). Complaints are unverified owner reports.
How many complaints does the 2005 Mercury Grand Marquis have?
487 complaints were on file with NHTSA as of 07/14/2026. Of those, 24 involved a crash, 5 involved a fire, and 21 reported injuries. No deaths were reported.
Does the 2005 Mercury Grand Marquis have any recalls?
Yes — 5 NHTSA safety recall campaigns, including campaign 15V861000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.
Has NHTSA acted on the 2005 Mercury Grand Marquis's reported problems?
3 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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