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#BS-1986-MERGRA-1F23

1986 Mercury Grand MarquisProblems, Recalls & Reliability

Based on reports from 22 owners and 2 recalls for this exact model.

Data updated ·checked October 21, 2026 · NHTSA complaints through October 19, 2026

Complaints
22
Crashes
0
Fires
12
Recalls
2
TSBs
22
🟢

Preliminary Verdict

Proceed with Caution

Based on 22 complaints, 0 crashes, 12 fires, and 2 recalls.

See full verdict with buy/skip conditions

Preview: What's in your full report

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Mechanic Inspection Checklist

!Check the Electrical System:ignition:switchHIGH

8 owners reported electrical system:ignition:switch issues.

!Inspect the Engine And Engine Cooling:engine:gasolineMED
Look for symptoms of wear and premature failure
+ 6 more items in full checklistUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Electrical System:ignition:switch (8 reports).

Includes fuel costs, common repairs, and recall riskUnlock

Also in your report

Owner Intelligence

AI-synthesized themes from real complaints

Buyer Lot Checklist

Questions, test drive checks, walk-away triggers

Negotiation Talking Points

Data-backed dollar deductions

Buy / Skip Verdict

Final recommendation with conditions

10 sections total in the full reportUnlock all

Where the complaints fall

Electrical System:ignition:switch8 (36%)
Engine And Engine Cooling:engine:gasoline4 (18%)
Electrical System:ignition2 (9%)
Electrical System:wiring:front Underhood1 (5%)
Power Train:automatic Transmission:lever And Linkage:column Shift1 (5%)
Service Brakes, Hydraulic:foundation Components:disc1 (5%)
Service Brakes, Hydraulic:foundation Components:disc:caliper1 (5%)
Steering: Steering Wheel/handle Bar1 (5%)

1986 Mercury Grand Marquis: Known Issues & Problem Areas

Electrical System:ignition:switch Issues

Electrical System:ignition:switch complaints account for 36% of all reports filed for the 1986 Mercury Grand Marquis, with 8 owners filing complaints with NHTSA.

Engine And Engine Cooling:engine:gasoline Issues

Engine And Engine Cooling:engine:gasoline complaints account for 18% of all reports filed for the 1986 Mercury Grand Marquis, with 4 owners filing complaints with NHTSA. Owners should pay attention to engine and engine cooling:engine:gasoline-related symptoms during test drives and pre-purchase inspections.

Electrical System:ignition Issues

Electrical System:ignition complaints account for 9% of all reports filed for the 1986 Mercury Grand Marquis, with 2 owners filing complaints with NHTSA. Owners should pay attention to electrical system:ignition-related symptoms during test drives and pre-purchase inspections.

Electrical System:wiring:front Underhood Issues

Electrical System:wiring:front Underhood complaints account for 5% of all reports filed for the 1986 Mercury Grand Marquis, with 1 owners filing complaints with NHTSA. Owners should pay attention to electrical system:wiring:front underhood-related symptoms during test drives and pre-purchase inspections.

Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.

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Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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Recall History (2 recalls)

07E064000Oct 2007

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

CERTAIN FEDERAL-MOGUL AFTERMARKET FUEL PUMPS SOLD UNDER THE BRAND NAMES OF CARTER, ACCUFLOW, NAPA, TRUFLOW, PARTS DEPO, AND PARTS MASTER, SHIPPED BETWEEN AUGUST 2006 AND JULY 2007 FOR USE ON THE VEHICLES LISTED ABOVE. THE FUEL PUMP DIAPHRAGM IN CERTAIN PRODUCTION RUNS MAY HAVE BEEN IMPROPERLY INSTALLED OR INADEQUATELY TESTED WHICH MAY CAUSE THE FUEL PUMP TO LEAK.

87V139000Oct 1987

FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

SPRING LOCK FUEL LINE COUPLING MAY NOT BE PROPERLY ENGAGED.

Recall severity analysis & seller scripts

The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.

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NHTSA Defect Investigations (2)

All closed. Investigations are how NHTSA decides whether a defect needs a recall.

PE87055ClosedOpened Sep 1987 · closed Mar 1988

FIRES

POWER TRAIN

PE91125ClosedOpened Sep 1991 · closed Jan 1992

BRAKE LINE PUNCTURES

SERVICE BRAKES, HYDRAULIC

The worst model year for the Mercury Grand Marquis is the 1997 — worth knowing if you're cross-shopping years. The biggest problem area is lights.

1986 Mercury Grand Marquis vs. Class Average (Large Cars)

This vehicle

22

Class avg

22

Complaint volume is roughly in line with other large cars vehicles from 1986.

Complaint counts correlate with sales volume — popular vehicles naturally generate more reports. The full report normalizes for this.

About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 22 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 2 recalls found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

Last updated (checked October 21, 2026). NHTSA complaints received through October 19, 2026.

Other Mercury Grand Marquis Model Years

2011201020092008200720062005200420032002200120001999199819971996199519941993199219911990198919881987198619851984198319821981198019791977
View all Mercury Grand Marquis years →

1986 Mercury Grand Marquis: Frequently Asked Questions

What is the most common problem with the 1986 Mercury Grand Marquis?
The most commonly reported issue with the 1986 Mercury Grand Marquis is related to the electrical system:ignition:switch, with 8 complaints filed with NHTSA.
Is the 1986 Mercury Grand Marquis reliable?
The 1986 Mercury Grand Marquis has 22 complaints, 0 crash reports, and 12 fire reports filed with NHTSA. The full report analyzes whether these numbers indicate real risk or are proportional to the vehicle’s popularity.
How much does it cost to fix 1986 Mercury Grand Marquis problems?
Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.
Does the 1986 Mercury Grand Marquis have any recalls?
Yes, the 1986 Mercury Grand Marquis has 2 recalls on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.
What mileage do Mercury Grand Marquis problems start?
Mileage data is limited for this vehicle. The full report analyzes available data to identify failure patterns by mileage range.
When was the 1986 Mercury Grand Marquis data last updated?
BumperScan last checked this vehicle against NHTSA on October 21, 2026, covering owner complaints received through October 19, 2026 plus the latest recalls, investigations and technical service bulletins. Its numbers last changed on October 4, 2026.
What’s in the full report?
10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.
How is this different from free NHTSA data?
NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.
How is this different from Carfax?
Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.
What if the report isn’t useful?
100% money-back guarantee. If the report doesn’t help you make a more informed decision, we’ll refund you — no questions asked.
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