AI Damage1992 Mitsubishi Diamante: common problems
Owners of the 1992 Mitsubishi Diamante filed 42 complaints with NHTSA, most often about engine and cooling and service brakes. Details by component below, with sources.
Key figures
- Owner complaints
- 42
- involving a crash
- 1
What fails most often
- 1 Engine and cooling 26% of all complaints
- 2 Service brakes 17% of all complaints
- 3 Air bags 14% of all complaints
- 4 Electrical system 14% of all complaints
- 5 Suspension 12% of all complaints
- 6 Powertrain 10% of all complaints
- 7 Seat belts 10% of all complaints
- 8 Visibility 10% of all complaints
- Engine and cooling: 11 complaints (26% of all).
- Service brakes: 7 complaints (17% of all).
- Air bags: 6 complaints (14% of all), 1 of them with a crash reported by the owner.
- Electrical system: 6 complaints (14% of all).
- Suspension: 5 complaints (12% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 3 L · petrol · 6 cylnamed in 1 complaints
- automatic, 4-speed
Drive: FWD
Symptoms owners describe
How many of the 42 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 | 11 | 0 | 0 |
| Service brakes | 7 | 0 | 0 |
| Air bags | 6 | 1 | 0 |
| Electrical system | 6 | 0 | 0 |
| Suspension | 5 | 0 | 0 |
| Powertrain | 4 | 0 | 0 |
| Seat belts | 4 | 0 | 0 |
| Visibility | 4 | 0 | 0 |
| Equipment | 2 | 0 | 0 |
| Steering | 2 | 1 | 0 |
| Parking brake | 1 | 0 | 0 |
| Structure | 1 | 0 | 0 |
| Vehicle speed control | 1 | 0 | 0 |
| Wheels | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Traveling about 40 mph when the steering wheel locked up, causing the consumer to hit a fire hydrant. The driver's nor passenger's side air bags deployed, causing injuries to the passenger.
This results in heavy oil consumption and eventual engine failure. This engine was utilized in the mitsubishi diamianti, 3000gt, dodge caravan, chrysler town & country, plymouth voyager among others.
I was driving on i57 on july 5th at 65 mph and my car suddenly lost power. I having roadside service called from my cell phone a tow truck. The tow truck driver arrived who was also a repair person and also owner of the repair shop.
Whenever consumer turned off the car and tried to start again it won't start. Took vehicle to dealer, and they said the neutral safety switch was bad.
Consumer was involved in a head on collision traveling 30-45 mph in which the driver side air bag did not deploy. Consumer also note the veihcle is totaled. Please provide any further details.
Air conditioner becomes inoperable. Also, intermittently the the automatic fan stays on high and the cuts off. The dealer has not been able correct the problem.
Right front rotor has a rust problem since I bought the car and the rotor cannot be turned creating a real expense and hazard
Everytime when using air conditioner, or putting on the radio, the vehicle is stalling and cutting off without prior warning due to battery. Consumer has replaced battery four times, but stalling continues. Dealer can't determine the problem.
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 5,819 of 36,656 model years in the NHTSA data (top 16% most complained about).
On average one model year of the Diamante has 42 complaints (12 years in the data). This year has 42, about 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.
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Other years of this model
Questions and answers
What are the most common problems with the 1992 Mitsubishi Diamante?
Owner complaints to NHTSA most often mention: engine and cooling, service brakes, air bags. Total complaints: 42. The most frequent symptoms in complaint texts: smoke, burning smell, fire (14%), oil leak or consumption (12%), rust, corrosion (10%).
How many service bulletins (TSB) were issued for the 1992 Mitsubishi Diamante?
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 1992 Mitsubishi Diamante 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 1992 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.