1991 Mercury Grand Marquis Problems

Below Average Complaints

Real NHTSA owner complaints for the 1991 Mercury Grand Marquis.

19901992
Complaints
106
Crashes
13
Fires
15
Injuries
14
Fatalities
—
Recalls
0

Worst 1991 Mercury Grand Marquis Problems

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

#110 complaints

Electrical System:Alternator/Generator/Regulator

Avg mileage:79,994 mi
Fires:8
#28 complaints

Unintended Acceleration

Crash-related:6
#37 complaints

Automatic Transmission

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All Problems by Category

Every NHTSA complaint category for the 1991 Mercury Grand Marquis.

Electrical System:Alternator/Generator/Regulator
10
complaints
Crashes
—
Fires
8
Avg Miles
79,994
Unintended Acceleration
8
complaints
Crashes
6
Fires
—
Avg Miles
—
Automatic Transmission
7
complaints
Crashes
—
Fires
—
Avg Miles
—
Airbags
6
complaints
Crashes
3
Fires
—
Avg Miles
—
Engine And Engine Cooling:Engine:Gasoline
5
complaints
Crashes
—
Fires
1
Avg Miles
—
Service Brakes, Hydraulic:Foundation Components:Disc:Rotor
5
complaints
Crashes
—
Fires
—
Avg Miles
—
Electrical System:Ignition
4
complaints
Crashes
—
Fires
—
Avg Miles
—
Electrical System:Wiring
4
complaints
Crashes
—
Fires
1
Avg Miles
—
Air Bags:Frontal
3
complaints
Crashes
1
Fires
—
Avg Miles
—
Engine And Engine Cooling:Engine
3
complaints
Crashes
—
Fires
—
Avg Miles
—
Structure:Body:Door
3
complaints
Crashes
—
Fires
—
Avg Miles
—
Vehicle Speed Control:Cables
3
complaints
Crashes
—
Fires
—
Avg Miles
—
Air Bags:Frontal:Sensor/Control Module
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Electrical Faults
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Exterior Lighting:Turn Signal
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Fuel System, Gasoline:Carburetor System
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Latches/Locks/Linkages:Doors:Latch
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Parking Brake:Conventional
2
complaints
Crashes
1
Fires
—
Avg Miles
—
Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip
2
complaints
Crashes
—
Fires
—
Avg Miles
—
Air Bags:Side/Window
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Electrical System:12v/24v/48v Battery:Cables
1
complaints
Crashes
—
Fires
1
Avg Miles
—
Electrical System:Ignition:Switch
1
complaints
Crashes
—
Fires
1
Avg Miles
—
Electrical System:Wiring:Front Underhood
1
complaints
Crashes
—
Fires
1
Avg Miles
—
Engine And Engine Cooling:Cooling System
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Engine And Engine Cooling:Exhaust System:Emission Control:Catalytic Convertor
1
complaints
Crashes
—
Fires
1
Avg Miles
—
Engine And Engine Cooling:Exhaust System:Manifold/Header/Muffler/Tail Pipe
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Equipment:Appliance:Air Conditioner
1
complaints
Crashes
—
Fires
—
Avg Miles
—
Exterior Lighting:Headlights:Switch
1
complaints
Crashes
—
Fires
1
Avg Miles
—
Fuel System, Gasoline:Delivery:Hoses, Lines/Piping, And Fittings
1
complaints
Crashes
—
Fires
—
Avg Miles
—

Search Owner Complaints

Read what owners actually reported to NHTSA for the 1991 Mercury Grand Marquis. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.

Other Mercury Grand Marquis Years

1981198219831984198519861987198819891990199119921993199419951996199719981999200020012002200320042005200620072008200920102011

1991 Mercury Grand Marquis — FAQ

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

Is the 1991 Mercury Grand Marquis reliable?
Verdict: Below Average Complaints. The 1991 Mercury Grand Marquis has 106 NHTSA complaints, 13 crash-related, and 0 recall campaigns. The most common issue is Electrical System:Alternator/Generator/Regulator with 10 complaints. Source: NHTSA via VinItel.
What are common problems with the 1991 Mercury Grand Marquis?
Top reported problems: Electrical System:Alternator/Generator/Regulator (10 complaints, avg 79,994 mi); Unintended Acceleration (8 complaints); Automatic Transmission (7 complaints). Every complaint is filed by an owner with NHTSA — this is raw reported data, not editorial opinion.
At what mileage do problems start on the 1991 Mercury Grand Marquis?
The weighted average mileage at time of complaint is about 79,994 miles. Some components fail earlier, some later — check the "All Problems by Category" table above for per-issue averages.
How safe is the 1991 Mercury Grand Marquis?
NHTSA complaints for the 1991 Mercury Grand Marquis include 13 crash-related reports, 15 fire reports, 14 injuries, and 0 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 1991 Mercury Grand Marquis have any recalls?
No NHTSA recall campaigns have been issued for the 1991 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 1991 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 1991 Mercury Grand Marquis

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