Total Complaints
23 filings
MERCURY MARQUIS · model year
1984 MERCURY MARQUIS
23 NHTSA complaints, 1 crash report. A VIN lookup is required to determine whether a specific vehicle has an unrepaired recall.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1984MERCURYMARQUIS carries 23 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 1 crash, 1 fire, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
The most frequently selected component label in reports for the 1984 MARQUIS is electrical system:ignition:switch with 6 filings, followed by power train:automatic transmission (2) and fuel system, other (2). Complaint categories reflect owner reports and intake categorization; they do not establish a defect pattern or cause.
NHTSA currently has 22 investigation files overlapping the 1984 MARQUIS. Owners comparing this cohort against neighboring years should read the complaint-by-year trend as report volume, not a causal diagnosis. Use the related-complaint feed and the official recall lookup when researching a specific vehicle.
23
Complaints
1
Crashes
1
Fires
0
Injuries
0
Deaths
Crashes Reported
1 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| ELECTRICAL SYSTEM:IGNITION:SWITCH | 6 |
| POWER TRAIN:AUTOMATIC TRANSMISSION | 2 |
| FUEL SYSTEM, OTHER | 2 |
| STRUCTURE:BODY | 2 |
| POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH | 2 |
| FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY | 1 |
| ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY | 1 |
| ENGINE AND ENGINE COOLING:EXHAUST SYSTEM | 1 |
| EXTERIOR LIGHTING:HEADLIGHTS | 1 |
| SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:WHEEL CYLINDERS | 1 |
| ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS | 1 |
| SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:PADS | 1 |
| SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:DRUM | 1 |
| EQUIPMENT | 1 |
Recent Complaints
20030205POWER TRAIN:AUTOMATIC TRANSMISSION
I PURCHASE A USED VEHICLE ON 2-03-03 AT 11:OO AM I WAS ENSURED THAT IT WAS A GREAT VEHICLE. ABOUT 5:15 PM I WAS ON THE FREEWAY, AND IT STARTED TO SMOKE AND IT LOOSE COMPRESSION. I HAD SPOKE TO THE DEALER AND HE STATED THAT IT WASEN'T HIS PROBLEM. I FEEL THAT I WAS SOLD A UNSAFE VEHICLE.
Mileage: 112,160
20030205EQUIPMENT
I PURCHASE A USED VEHICLE ON 2-03-03 AT 11:OO AM I WAS ENSURED THAT IT WAS A GREAT VEHICLE. ABOUT 5:15 PM I WAS ON THE FREEWAY, AND IT STARTED TO SMOKE AND IT LOOSE COMPRESSION. I HAD SPOKE TO THE DEALER AND HE STATED THAT IT WASEN'T HIS PROBLEM. I FEEL THAT I WAS SOLD A UNSAFE VEHICLE.
Mileage: 112,160
20000918ELECTRICAL SYSTEM:IGNITION:SWITCH
VEHICLE LOST ALL ELECTRICAL POWER WHILE GOING DOWN THE HIGHWAY AT 65 MPH. PULLED OVER AND AFTER SEVERAL ATTEMPS THE CAR STARTED, BUT WHEN YOU PUT IT INTO GEAR IT WOULD LOSE ELECTRICAL POWER. AFTER INVESTIGATING, I FOUND THE IGNITION WIRING SEPARATED FROM ITS HOUSING.
20000918POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH
VEHICLE LOST ALL ELECTRICAL POWER WHILE GOING DOWN THE HIGHWAY AT 65 MPH. PULLED OVER AND AFTER SEVERAL ATTEMPS THE CAR STARTED, BUT WHEN YOU PUT IT INTO GEAR IT WOULD LOSE ELECTRICAL POWER. AFTER INVESTIGATING, I FOUND THE IGNITION WIRING SEPARATED FROM ITS HOUSING.
20000914ELECTRICAL SYSTEM:IGNITION:SWITCH
VEHICLE LOST ALL ELECTRICAL POWER WHILE GOING DOWN THE HIGHWAY AT 65 MPH. PULLED OVER AND AFTER SEVERAL ATTEMPS THE CAR STARTED, BUT WHEN YOU PUT IT INTO GEAR IT WOULD LOSE ELECTRICAL POWER. AFTER INVESTIGATING, I FOUND THE IGNITION WIRING SEPARATED FROM ITS HOUSING.
20000914POWER TRAIN:AUTOMATIC TRANSMISSION:PARK/NEUTRAL START INTERLOCK SWITCH
VEHICLE LOST ALL ELECTRICAL POWER WHILE GOING DOWN THE HIGHWAY AT 65 MPH. PULLED OVER AND AFTER SEVERAL ATTEMPS THE CAR STARTED, BUT WHEN YOU PUT IT INTO GEAR IT WOULD LOSE ELECTRICAL POWER. AFTER INVESTIGATING, I FOUND THE IGNITION WIRING SEPARATED FROM ITS HOUSING.
19981020ELECTRICAL SYSTEM:IGNITION:SWITCH
IGNITION SWITCH STARTED SMOKING DUE TO SHORT.
19980416ELECTRICAL SYSTEM:IGNITION:SWITCH
UPON TURNING ON IGNITION SWITCH, SMOKE CAME OUT DUE TO A CABLE NEXT TO BRAKE BOOSTER MELTED.
19961210ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY
RADIATOR/RADIATOR HOSE FAILED, RESULTING INN AN OIL LEAK; ALSO REPLACED BELTS/BRAKE PADS, SHOES, DRUMS AND WHEEL CYLINDERS/ EXHAUST SYSTEM/ALTERNATOR/HEADLAMPS. *AK
19961210ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
RADIATOR/RADIATOR HOSE FAILED, RESULTING INN AN OIL LEAK; ALSO REPLACED BELTS/BRAKE PADS, SHOES, DRUMS AND WHEEL CYLINDERS/ EXHAUST SYSTEM/ALTERNATOR/HEADLAMPS. *AK
19961210EXTERIOR LIGHTING:HEADLIGHTS
RADIATOR/RADIATOR HOSE FAILED, RESULTING INN AN OIL LEAK; ALSO REPLACED BELTS/BRAKE PADS, SHOES, DRUMS AND WHEEL CYLINDERS/ EXHAUST SYSTEM/ALTERNATOR/HEADLAMPS. *AK
19961210SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:WHEEL CYLINDERS
RADIATOR/RADIATOR HOSE FAILED, RESULTING INN AN OIL LEAK; ALSO REPLACED BELTS/BRAKE PADS, SHOES, DRUMS AND WHEEL CYLINDERS/ EXHAUST SYSTEM/ALTERNATOR/HEADLAMPS. *AK
19961210ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS
RADIATOR/RADIATOR HOSE FAILED, RESULTING INN AN OIL LEAK; ALSO REPLACED BELTS/BRAKE PADS, SHOES, DRUMS AND WHEEL CYLINDERS/ EXHAUST SYSTEM/ALTERNATOR/HEADLAMPS. *AK
19961210SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:PADS
RADIATOR/RADIATOR HOSE FAILED, RESULTING INN AN OIL LEAK; ALSO REPLACED BELTS/BRAKE PADS, SHOES, DRUMS AND WHEEL CYLINDERS/ EXHAUST SYSTEM/ALTERNATOR/HEADLAMPS. *AK
19961210SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:DRUM
RADIATOR/RADIATOR HOSE FAILED, RESULTING INN AN OIL LEAK; ALSO REPLACED BELTS/BRAKE PADS, SHOES, DRUMS AND WHEEL CYLINDERS/ EXHAUST SYSTEM/ALTERNATOR/HEADLAMPS. *AK
19960923STRUCTURE:BODY
HEAD LINER FABRIC HANGING DOWN, OBSCURING VISION TO THE REAR. (SECOND VEHICLE ON 502774)
19960923FUEL SYSTEM, OTHER
GAS GAUGE INDICATOR FAILED.
19960419FireELECTRICAL SYSTEM:IGNITION:SWITCH
IGNITION FIRE. *AK
19960404FUEL SYSTEM, OTHER
GAS GUAGE INDICATOR FAILED.
19960404STRUCTURE:BODY
HEAD LINER HANGS LOOSE, OBSCURING VISION.
Compare 1984MERCURYMARQUIS to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 1984 MERCURY MARQUIS have?▼
The 1984 MERCURY MARQUIS has 23 NHTSA complaints, 1 crashes, 1 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 1984 MERCURY MARQUIS?▼
The most-complained component for the 1984 MERCURY MARQUIS is ELECTRICAL SYSTEM:IGNITION:SWITCH with 6 complaints. Other frequently reported areas include POWER TRAIN:AUTOMATIC TRANSMISSION and FUEL SYSTEM, OTHER.
Is the 1984 MERCURY MARQUIS safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data vintage: August 2026. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Every figure on PlainCars is rendered directly from NHTSA complaint and safety data, no number is typed in by an editor. This year-specific record is rendered from NHTSA ODI, recall, and NCAP rows for the 1984 MERCURY MARQUIS; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.
Read our methodology - how this data is sourced, computed, and verified.