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#BS-1978-MERGRA-1F23

1978 Mercury Grand Marquis

Based on reports from 1 owners and 0 recalls for this exact model.

Complaints
1
Crashes
0
Fires
0
Recalls
0
TSBs
0
✅

Preliminary Verdict

Green Light

Based on 1 complaints, 0 crashes, 0 fires, and 0 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:wiring:interior/under DashHIGH

1 owners reported electrical system:wiring:interior/under dash issues.

+ 3 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:wiring:interior/under Dash (1 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:wiring:interior/under Dash1 (100%)

1978 Mercury Grand Marquis: Known Issues & Problem Areas

Electrical System:wiring:interior/under Dash Issues

Electrical System:wiring:interior/under Dash complaints account for 100% of all reports filed for the 1978 Mercury Grand Marquis, with 1 owners filing complaints with NHTSA.

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

Don't negotiate blind — know what this car costs to own

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

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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.

About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 1 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 0 recalls found for this vehicle.

Repair Cost Data

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

Other Mercury Grand Marquis Model Years

20112010200920082007200620052004200320022001200019991998199719961995199419931992199119901989198819871986198519841983198219811980197919781977
View all Mercury Grand Marquis years →

1978 Mercury Grand Marquis: Frequently Asked Questions

What is the most common problem with the 1978 Mercury Grand Marquis?
The most commonly reported issue with the 1978 Mercury Grand Marquis is related to the electrical system:wiring:interior/under dash, with 1 complaints filed with NHTSA.
Is the 1978 Mercury Grand Marquis reliable?
The 1978 Mercury Grand Marquis has 1 complaints, 0 crash reports, and 0 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 1978 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 1978 Mercury Grand Marquis have any recalls?
No recalls have been issued for the 1978 Mercury Grand Marquis according to NHTSA records.
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.
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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10 sections of AI analysis based on 1 owner reports. Know before you buy.

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