AI Damage1986 Cadillac Seville: common problems
Owners of the 1986 Cadillac Seville filed 11 complaints with NHTSA, most often about engine and cooling and service brakes. Details by component below, with sources.
Key figures
- Owner complaints
- 11
- involving a crash
- 1
What fails most often
- 1 Engine and cooling 36% of all complaints
- 2 Service brakes 18% of all complaints
- 3 Steering 18% of all complaints
- 4 Electrical system 9% of all complaints
- 5 Exterior lighting 9% of all complaints
- 6 Fuel system 9% of all complaints
- 7 Visibility 9% of all complaints
- Engine and cooling: 4 complaints (36% of all), 1 of them with a crash reported by the owner.
- Service brakes: 2 complaints (18% of all).
- Steering: 2 complaints (18% of all).
- Electrical system: 1 complaints (9% of all).
- Exterior lighting: 1 complaints (9% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 4.1 L · petrol · 8 cyl
- automatic, 4-speed
Drive: FWD
Symptoms owners describe
How many of the 11 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine and cooling | 4 | 1 | 0 |
| Service brakes | 2 | 0 | 0 |
| Steering | 2 | 0 | 0 |
| Electrical system | 1 | 0 | 0 |
| Exterior lighting | 1 | 0 | 0 |
| Fuel system | 1 | 0 | 0 |
| Visibility | 1 | 1 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Engine manifold was not connected and fumes that were released put consumer to sleep at red lights. Once consumer heard car hitting concrete rails, and could not wake up. Consumer felt this was very unsafe because of the ventilation system. Consumer feared catching a liver disease.
While driving, consumer has gone unconscious due to fumes from the emission system, which causes loss of control and crashes, consumer states the emission system is worn and has 7 holes, can not get it replaced, consumer has been injured and has been in four accident because of this.
Consumer states vehicle has a faulty emission system, the fumes and smoke are bad, consumer states this causes unconciousness and accidents.
I presented a copy of the following nhtsa campaign id number: 87v047000 component: lighting:switch:button:ring:head lights recall and the service manager informed me that there are no re calls on this car. Should the dealer fix this dangerous problem without charge? Thank you conrad simoneau
When applying brakes vehicle accelerated, accelerator pedal pulsated, felt like vehicle was trying to engage cruise.
Consumer had a new engine put in my car car is not working right when at light start to move car stalls. Tt
Internal leak in intake manifold gasket, allowing coolant to leak into oil.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 10,520 of 36,656 model years in the NHTSA data (top 29% most complained about).
On average one model year of the Seville has 31 complaints (26 years in the data). This year has 11, below average.
What to check before buying
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Other years of this model
- Seville 19856 sources
- Seville 198711 sources
- Seville 198811 sources
- Seville 19895 sources
- Seville 199019 sources
- Seville 199121 sources
- Seville 199227 sources
- Seville 199342 sources
- Seville 199450 sources
- Seville 199574 sources
- Seville 1996122 sources
- Seville 199795 sources
- Seville 199865 sources
- Seville 199973 sources
- Seville 200038 sources
- Seville 200153 sources
- Seville 200245 sources
- Seville 200316 sources
- Seville 20049 sources
Questions and answers
What are the most common problems with the 1986 Cadillac Seville?
Owner complaints to NHTSA most often mention: engine and cooling, service brakes, steering. Total complaints: 11. The most frequent symptoms in complaint texts: smoke, burning smell, fire (18%), headlights and tail lights (9%), knocking, grinding or other noise (9%).
How many service bulletins (TSB) were issued for the 1986 Cadillac Seville?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 1986 Cadillac Seville from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 1986 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.