Total Complaints
13 filings
MERCURY TOPAZ · model year
1984 MERCURY TOPAZ
13 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1984MERCURYTOPAZ carries 13 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 6 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1984 TOPAZ is electrical system:ignition:switch with 4 filings, followed by electrical system:wiring (1) and electrical system:wiring:front underhood (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 22 investigation files overlapping the 1984 TOPAZ. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
13
Complaints
0
Crashes
6
Fires
0
Injuries
0
Deaths
Crashes Reported
0 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 | 4 |
| ELECTRICAL SYSTEM:WIRING | 1 |
| ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD | 1 |
| EXTERIOR LIGHTING:HEADLIGHTS | 1 |
| VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE | 1 |
| ELECTRICAL SYSTEM:IGNITION | 1 |
| ENGINE AND ENGINE COOLING:ENGINE | 1 |
| ELECTRICAL SYSTEM:IGNITION:MODULE | 1 |
| ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL | 1 |
| ENGINE AND ENGINE COOLING:ENGINE:GASOLINE | 1 |
Recent Complaints
20010430ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
WHEN VEHICLE GETS HOT IT WILL STALL, SOMETIMES VEHICLE WILL NOT START.*AK
20001025ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL
TFI MODULE STOPPED FUNCTIONING, CAUSING CAR TO STALL. BUT NOW IT WON'T START. CONSUMER HAS REPLACED 3 OF THESE MODULES WITHIN THE LAST THREE YEARS. CONSUMER WAS VERY UPSET BECAUSE THERE COULD BE AN ACCIDENT.*AK
19991029ENGINE AND ENGINE COOLING:ENGINE
WHEN DRIVING AT 18 MPH THE VEHICLE IS STALLING AND CUTTING OFF. CONSUMER HAD THE COMPUTER CHIP REPLACED, AND THE DEALER CAN'T DETERMINE THE CAUS EOF STALLING. *AK
19991029ELECTRICAL SYSTEM:IGNITION:MODULE
WHEN DRIVING AT 18 MPH THE VEHICLE IS STALLING AND CUTTING OFF. CONSUMER HAD THE COMPUTER CHIP REPLACED, AND THE DEALER CAN'T DETERMINE THE CAUS EOF STALLING. *AK
19990531ELECTRICAL SYSTEM:IGNITION
NO SUMMARY LISTE DFOR THIS VEHICLE. *AK
19980323EXTERIOR LIGHTING:HEADLIGHTS
TOOK VEHICLE TO DEALER FOR HEATER HOSE REPAIR. WHILE THERE, WAS INFORMED BY MECHANIC THAT HEADLIGHT WOULD FLUTTER/FLICKER OFF AND ON. COULD NOT FIND CAUSE OF PROBLEM. *AK
19980323VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE
TOOK VEHICLE TO DEALER FOR HEATER HOSE REPAIR. WHILE THERE, WAS INFORMED BY MECHANIC THAT HEADLIGHT WOULD FLUTTER/FLICKER OFF AND ON. COULD NOT FIND CAUSE OF PROBLEM. *AK
19961112FireELECTRICAL SYSTEM:IGNITION:SWITCH
ELECTRICAL SHORT IN THE IGNITION SWITCH, WHEN THE VEHICLE IS IN THE OFF POSITION THE STARTER WILL START RUNNING UNTIL THE VEHICLE CAUGHT FIRE IN THE STEERING COLUMN. *AK
19960711FireELECTRICAL SYSTEM:IGNITION:SWITCH
IGNITION SWITCH FIRE. *SD
19960522FireELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD
WHILE DRIVING, FLAMES STARTED SHOOTING OUT FROM UNDERHOOD; DRIVER GOT OUT, STARTED RUNNING, TURNED AROUND, VEHICLE BLEW UP; VEHICLE HAD OIL LEAK. *AK
19960419FireELECTRICAL SYSTEM:WIRING
ENGINE COMPARTMENT FIRE CAUSED BY THE ELECTRICAL SYSTEM WIRING. *AK
19960418FireELECTRICAL SYSTEM:IGNITION:SWITCH
ELECTRICAL SHORT OR SHOCK IN THE IGNITION SWITCH, CAUSING THE VEHICLE TO CATCH FIRE. (THE VEHICLE WAS IN MOTION). *AK
19960418FireELECTRICAL SYSTEM:IGNITION:SWITCH
ELECTRICAL SHORT OR SHOCK IN THE IGNITION SWITCH, CAUSING THE VEHICLE TO CATCH FIRE. (THE VEHICLE WAS IN MOTION). *AK
Compare 1984MERCURYTOPAZ to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 1984 MERCURY TOPAZ have?▼
The 1984 MERCURY TOPAZ has 13 NHTSA complaints, 0 crashes, 6 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 1984 MERCURY TOPAZ?▼
The most-complained component for the 1984 MERCURY TOPAZ is ELECTRICAL SYSTEM:IGNITION:SWITCH with 4 complaints. Other frequently reported areas include ELECTRICAL SYSTEM:WIRING and ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD.
Is the 1984 MERCURY TOPAZ 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 as of 2025. 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.
Read our methodology — how this data is sourced, computed, and verified.