1984 Mercury Grand Marquis Problems

Below Average Complaints

Real NHTSA owner complaints for the 1984 Mercury Grand Marquis.

19831985
Complaints
24
Crashes
2
Fires
6
Injuries
1
Fatalities
2
Recalls
0

Worst 1984 Mercury Grand Marquis Problems

Top 3 most-reported issues with average mileage at failure.

#13 complaints

Electrical System:Ignition:Switch

Fires:2
#23 complaints

Electrical System:Wiring:Front Underhood

Fires:3
#33 complaints

Body Structure

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All Problems by Category

Every NHTSA complaint category for the 1984 Mercury Grand Marquis.

Electrical System:Ignition:Switch
3
complaints
Crashes
—
Fires
2
Avg Miles
—
Electrical System:Wiring:Front Underhood
3
complaints
Crashes
—
Fires
3
Avg Miles
—
Body Structure
3
complaints
Crashes
—
Fires
—
Avg Miles
—
Unintended Acceleration
3
complaints
Crashes
1
Fires
—
Avg Miles
—
Engine And Engine Cooling:Engine:Gasoline
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Engine And Engine Cooling:Exhaust System:Emission Control:Gas Recirculation Valve (Egr Valve)
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Electrical System:Ignition
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Engine And Engine Cooling:Exhaust System
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Fuel System, Gasoline:Fuel Injection System
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Fuel System, Gasoline:Storage:Tank Assembly
1
complaints
Crashes
—
Fires
1
Avg Miles
—
Suspension:Rear
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Vehicle Speed Control:Accelerator Pedal
1
complaints
Crashes
1
Fires
—
Avg Miles
—

Search Owner Complaints

Read what owners actually reported to NHTSA for the 1984 Mercury Grand Marquis. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.

Other Mercury Grand Marquis Years

1981198219831984198519861987198819891990199119921993199419951996199719981999200020012002200320042005200620072008200920102011

1984 Mercury Grand Marquis — FAQ

Answers based on real NHTSA complaint and recall data for this specific model year.

Is the 1984 Mercury Grand Marquis reliable?
Verdict: Below Average Complaints. The 1984 Mercury Grand Marquis has 24 NHTSA complaints, 2 crash-related, and 0 recall campaigns. The most common issue is Electrical System:Ignition:Switch with 3 complaints. Source: NHTSA via VinItel.
What are common problems with the 1984 Mercury Grand Marquis?
Top reported problems: Electrical System:Ignition:Switch (3 complaints); Electrical System:Wiring:Front Underhood (3 complaints); Body Structure (3 complaints). Every complaint is filed by an owner with NHTSA — this is raw reported data, not editorial opinion.
How safe is the 1984 Mercury Grand Marquis?
NHTSA complaints for the 1984 Mercury Grand Marquis include 2 crash-related reports, 6 fire reports, 1 injuries, and 2 fatalities. These are owner-reported incidents, not official crash-test ratings — a complaint being filed doesn't confirm a defect, but clusters around specific components are worth investigating.
Does the 1984 Mercury Grand Marquis have any recalls?
No NHTSA recall campaigns have been issued for the 1984 Mercury Grand Marquis as of the latest data sync. Verify by VIN for the most current status — new recalls can be issued years after a model year ships.
Should I buy a 1984 Mercury Grand Marquis?
Fewer complaints than typical for this model. That's a good sign, but every individual car is different — the VIN still tells you what happened to this specific one.

Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.

Wider context: See the full Mercury Grand Marquis reliability report with year-by-year comparison and generation analysis.

Check Your Specific 1984 Mercury Grand Marquis

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