1992 Mitsubishi Diamante Problems
- Complaints
- 42filed with NHTSA
- Median mileage
- 120,000miles, 1 complaints with mileage
- Recalls
- 2campaigns on record
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
- NHTSA crash rating
- —overall rating starts with 2011 models
- EPA fuel economy
- 19 mpgcombined, 3.0L 6-cyl FWD · 16 city / 23 hwy
Sources: NHTSA records for the 1992 Mitsubishi Diamante (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error
NHTSA recorded 42 consumer complaints for the 1992 Mitsubishi Diamante. The part named most often is engine cooling, with 11 complaints (26% of the total), followed by brakes (8) and air bags (6). 1 of the complaints include a mileage, and 0% of those were filed for vehicles with under 50,000 miles; the median is 120,000 miles. Of all complaints, 1 involved a crash, 1 a fire, 2 an injury, according to the filers. NHTSA lists 2 recall campaigns and 4 technical service bulletins for this model year. Brakes complaints overlap with 2 recall campaigns covering the hoses, lines/piping, and fittings filed under the same part.
Not compared (before 2008). Model years 2008–2023 of the same vehicle that have at least 25 complaints are compared, and a model needs at least 3 of them.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Engine cooling11 26%
- Brakes8 19%
- Air bags6 14%
- Electrical system6 14%
- Suspension5 12%
- Seat belts4 9.5%
- Equipment2 4.8%
- Steering2 4.8%
Also reported: Body and structure (1), Vehicle speed control (1), Wheels (1).
Example complaints
Engine cooling: “Mitsubishi has produced 3.0 liter v6 engines from about 1990 through 1996 that exhibit chronic exhasut valve guide function deteroriation after approximately 60,000 miles. 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.”
NHTSA complaint #10048983, filed 2003-12, 120,000 milesBrakes: “1. Front brake rotors were replaced at mileage 82500 for pulsation when braking. New rotors began to pulsate before 5000 miles use. Rotors were turned and trued by dealer at 90,100 miles, but began to pulsate again with in 2000 miles. 2. Engine exhausts light grey smoke upon acceleration after idling for 2 minutes or more. Engine oil consumption estimated at 1 qt/3000 miles.”
NHTSA complaint #731515, filed 2000-09Air bags: “The srs light stays on in the vehicle. Owner took vehicle to dealer, and they said that the air bag was disabled. An internal short has made the air bag disabled. The dealer will not pay to reconnect the air bag. There was no warning that the air bag was disabled untill the dealer stated .”
NHTSA complaint #815980, filed 1997-09Electrical system: “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.”
NHTSA complaint #839174, filed 1999-07Mileage when problems were reported
0% of the 1 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 120,000 and 120,000 miles.
Complaints by year filed
Trend: stable. Complaints filed in the last 3 full calendar years are within 25% of the 3 years before.
Crash test ratings
NHTSA's 5-Star Safety Ratings for the 1992 Mitsubishi Diamante. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.
| Version | Overall | Frontal | Side | Side pole | Rollover |
|---|---|---|---|---|---|
| Diamante · sedan | not rated | 4 / 4 | — | — | — |
Ratings before the 2011 model year come from an older, less demanding test and are not comparable with ratings for 2011 and later.
Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.
Fuel economy and running cost
EPA ratings for each 1992 Mitsubishi Diamante version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| Diamante FWD | 3.0L 6-cyl | 4-speed automatic | 16 | 23 | 19 | $4,350 |
| Diamante FWD | 3.0L 6-cyl | 4-speed automatic | 16 | 22 | 18 | $4,550 |
Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.
Recalls and investigations
- 96V143002Aug 12, 1996Service brakes, hydraulic › Foundation components › Hoses, lines/piping, and fittingsCovers: Mitsubishi Diamante 1992–1994, 3000GT 1991–1994, Montero 1992–1994
Under conditions of full lock steering and full suspension travel, the left or right front wheel-side brake hose can crack, resulting in brake fluid leakage.
- 96V143001Jul 25, 1996Service brakes, hydraulic › Foundation components › Hoses, lines/piping, and fittingsCovers: Mitsubishi Diamante 1992–1994, 3000GT 1991–1994, Montero 1992–1994
Under conditions of full lock steering and full suspension travel, the left or right front wheel-side brake hose can crack, resulting in brake fluid leakage.
Recall details for the 1992 Mitsubishi Diamante → · Check a VIN at nhtsa.gov/recalls
Technical service bulletins
TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 4 on record; the latest 4 are shown.
- 10169006Nov 26, 2019Equipment. This is a service newsletter (Tech Talk) that was sent out to dealers.
- 10163703Jul 30, 2019Equipment. This is a Technical Service Bulletin sent to dealers. This bulletin supersedes TSB-18-00-003, issued April, 2018, to add updated information for Carrying Capacity Reduced Label.
- 10130469Feb 26, 2018Equipment. This is a service newsletter (Tech Talk) that was sent out to dealers.
- 10170852Jan 29, 2013Body and structure. This Technical Service Bulletin updates the door adjustment procedure in the Body Section of the applicable service manuals.
Other model years of the Mitsubishi Diamante
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2003 | 56 | 57,500 | 2 | — | 18 | Not compared (before 2008) | Stable |
| 2002 | 123 | 60,000 | 3 | — | 18 | Not compared (before 2008) | Stable |
| 2001 | 78 | 59,750 | 2 | — | 18 | Not compared (before 2008) | Stable |
| 2000 | 51 | 57,171 | 3 | — | 18 | Not compared (before 2008) | Stable |
| 1999 | 23 | 86,450 | 2 | — | 18 | — | Stable |
| 1998 | 27 | 71,750 | 1 | — | 18 | Not compared (before 2008) | Stable |
| 1997 | 34 | 111,566 | 0 | — | 19 | Not compared (before 2008) | Stable |
| 1995 | 12 | 137,500 | 0 | — | 19 | — | Not enough data |
| 1994 | 27 | 50,015 | 2 | — | 19 | Not compared (before 2008) | Stable |
| 1993 | 29 | 108 | 3 | — | 18 | Not compared (before 2008) | Stable |
| 1992 | 42 | 120,000 | 2 | — | 19 | Not compared (before 2008) | Stable |
All Mitsubishi Diamante model years · Best and worst years by complaints
Frequently asked questions
How many NHTSA complaints does the 1992 Mitsubishi Diamante have?
NHTSA recorded 42 consumer complaints for the 1992 Mitsubishi Diamante as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 1992 Mitsubishi Diamante is reported most often?
Engine cooling is named most often, in 11 complaints (26% of the total), followed by brakes with 8.
Has the 1992 Mitsubishi Diamante been recalled?
NHTSA lists 2 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
What gas mileage does the 1992 Mitsubishi Diamante get?
The EPA rates the 1992 Mitsubishi Diamante (Diamante, 3.0L 6-cyl) at 19 mpg combined, 16 city and 23 highway, with an estimated annual fuel cost of $4,350 at 15,000 miles a year. Other engine and drive versions are rated differently.
At what mileage are problems with the 1992 Mitsubishi Diamante reported?
Among the 1 complaints that include a mileage, the median is 120,000 miles and the middle half falls between 120,000 and 120,000 miles; 0% were filed for vehicles with under 50,000 miles.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.