1986 Ford Mustang problems & reliability
30 owner complaints filed with NHTSA for the 1986 Ford Mustang. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
5 complaints report injuries (6 injured).
Federal crash records (FARS 2020–2023): 1986 Ford Mustang vehicles were involved in 4 fatal crashes with 4 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Electrical System → | 11 | 37% |
| Seat Belts | 6 | 20% |
| Engine and Engine Cooling | 5 | 17% |
| Tires | 3 | 10% |
| Engine | 1 | 3% |
| Exterior Lighting | 1 | 3% |
| Latches/locks/linkages | 1 | 3% |
| Parking Brake | 1 | 3% |
| Power Train | 1 | 3% |
| Structure | 1 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Complaints by incident year
What owners report
“The contact owns a 1986 Ford Mustang. The contact stated that while driving at approximately 20 MPH, the vehicle stalled and he was able to continue driving in second gear. The vehicle then lost motive power and failed to restart. No warning lights were illuminated. The vehicle was then towed to an independent…”
Engine · filed Sep 26, 2022
“Tl* the contact owns a 1986 ford mustang. The contact stated upon taking the vehicle for emission testing, the vehicle did not pass due to defective co2 sensors. The contact purchased the necessary parts for the repairs yet the dealer advised the catalyst system was brand new and would not need to be replaced. The…”
Engine and Engine Cooling · filed Apr 9, 2010
“Tl*the contact owns a 1986 ford mustang. The contact stated that his vehicle was recalled. He tried to have the vehicle repaired for three years. The dealer refused to repair the vehicle since it would take two hours to repair it. The manufacturer advised the contact that the dealerships are independently owned and…”
Engine and Engine Cooling · filed Mar 2, 2010
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- CRUISE CONTROL MALFUNCTION
Preliminary Evaluation PE93011 · opened Mar 3, 1993 · closed Jul 19, 1993
- FR SEAT FLOOR MOUNT FAILS
Preliminary Evaluation PE90052 · opened Mar 7, 1990 · closed Jun 20, 1990
- SPEED CONTROL MALFUNCTION
Preliminary Evaluation PE89118 · opened Apr 19, 1989 · closed Sep 6, 1989
- STALLING
Preliminary Evaluation PE87028 · opened May 1, 1987 · closed Jan 21, 1988
- SEATBACK FAILURE
Engineering Analysis EA86010 · opened Mar 26, 1986 · closed Jul 28, 1989 · led to recall 86V082000
Technical service bulletins
22 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 1986 Ford Mustang. The 10 most recent:
Information regarding transmission fluid usage charts. *slc
01157 · Service Bulletin/Repair Instructions · issued Aug 6, 2001
Some vehicles may exhibit heater core leaks. *slc
01156 · Service Bulletin/Repair Instructions · issued Aug 6, 2001
Subject regarding contamination from prior transmission concerns or excess wear may be trapped in the transmission fluid cooling system. *tt
002310 · Service Bulletin/Repair Instructions · issued Nov 13, 2000
Information regarding the new transmission cooler flusher- service tip. *mjs
0015 · Service Bulletin/Repair Instructions · issued Jan 10, 2000
Subject on a wire harness terminal repair kit available for repairing electrical wiring harnesses. *tt
99222 · Service Bulletin/Repair Instructions · issued Oct 18, 1999
Information on identifying non-approved / alternate refrigerants which could cause safety, and performance concerns if installed in ford a/c systems. *tt
99196 · Service Bulletin/Repair Instructions · issued Sep 20, 1999
Information on the new flush and fill tool available through rotunda. *tt
99152 · Service Bulletin/Repair Instructions · issued Jul 26, 1999
Information on a new transmission fluid usage chart. *yc
9888 · Service Bulletin/Repair Instructions · issued Apr 27, 1998
A new silicone gasket and sealant. *yc
9874 · Service Bulletin/Repair Instructions · issued Apr 13, 1998
Information on tire company telephone numbers for customer assistance. *yc
9852 · Service Bulletin/Repair Instructions · issued Apr 13, 1998
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 1986 Ford Mustang in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 1986 Ford Mustang?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.