Verdict · NHTSA data
Limited data — recalls on file
NHTSA has just 20 complaints on file for the 1986 Mercury Cougar — too few to judge reliability from owner reports alone — but 2 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.
20
NHTSA complaints
2
Recalls
1
Investigations
0
Crash-involved
2
Fires reported
1
Injuries
0
Deaths
—
NCAP overall
| Component | Complaints | Share | vs prior year |
|---|---|---|---|
| Electrical System | 5 | 25% | ▼ down |
| Fuel System | 4 | 20% | ▲ up |
| Seat Belts | 3 | 15% | ▲ up |
| Brakes | 2 | 10% | ▼ down |
| Speed Control | 2 | 10% | ▼ down |
| Seats | 1 | 5% | — flat |
| Visibility & Wipers | 1 | 5% | — flat |
| Body & Structure | 1 | 5% | — flat |
| Engine | 1 | 5% | — flat |
2 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.
Defect
SPRING LOCK FUEL LINE COUPLING MAY NOT BE PROPERLY ENGAGED.
Consequence
COUPLING COULD DISENGAGE DUE TO FUEL PRESSURE,VIBRATION, AND ENGINE MOVEMENTS; THIS WOULD CAUSE LOSS OF FUEL WHICH, INPRESENCE OF AN IGNITION SOURCE, CREATES A FIRE RISK.
Remedy
INSTALL RETAINER CLIPS OVER THE COUPLINGS TO PREVENT COUPLING SEPARATION AND FUEL LEAKAGE.
Defect
HEADLAMP COVERS WERE INSTALLED ON VEHICLES IN ERROR. CAUSING THE CARS NOT TO COMPLY WITH FMVSS 108, LAMPS, REFLECTIVE DEVICES AND ASSOCIATED EQUIPMENT. CONSEQUENCE OF DEFECT: THE HEADLAMP COVERS MAY HINDER THE SAFE OPERATION OF THE CAR IN DARKNESS AND OTHER CONDITIONS OF REDUCED VISIBILITY.
Remedy
REMOVE HEADLAMP COVERS.
Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.
“THE BRACKET THAT HOLD THE STRAPS FOR THE FUEL TANK RUSTED VERY BADLY, BROKE AND THE FEUL TANK DROPPED WHILE THE CAR WAS MOVING/DRAGGED AND RIPPED A HOLE IN THE GAS TANK THE SPARKS COULD HAVE LIT THE GAS ON FIRE AND POTENTAILY COULD HAVE KILLED MY WIFE AND SON IN THE CAR.THE REST OF THE CAR IS IN…”
“HEAD GASKET ON 3.8 ENGINE HAS BLOWN TWO TIMES IN 8 MONTHS. CAR OVERHEATS AND HAS OIL IN RADIATOR. HEATER DOES NOT WORK. AND VERY DIM LIGHTING ON SPEEDOMETER.*AK”
The record is thin — 20 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 2 recalls should be verified as completed.
According to NHTSA complaint data, the leading problem areas are electrical system (5 complaints), fuel system (4 complaints), seat belts (3 complaints).
Yes — NHTSA lists 2 recall campaigns affecting the 1986 Mercury Cougar. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.
NHTSA opened one investigation into this model year; all are now closed.
Based on complaint rates and open investigations, the Cougar years to avoid are 1999, 2000, 1993, 1994, 1995, 2002, 1992, 1997, 1989, 1990, 2001, 1991, 1996, 1988, 1987. The cleanest record among Cougar years belongs to 1981.
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.