1997 Mitsubishi Diamante Problems
- Complaints
- 34filed with NHTSA
- Median mileage
- 111,566miles, 4 complaints with mileage
- Recalls
- 0campaigns 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, 3.5L 6-cyl FWD · 16 city / 24 hwy
Sources: NHTSA records for the 1997 Mitsubishi Diamante (complaints, recalls, investigations), EPA fuel economy. Report an error
NHTSA recorded 34 consumer complaints for the 1997 Mitsubishi Diamante. The part named most often is brakes, with 15 complaints (44% of the total), followed by transmission and drivetrain (10) and engine cooling (4). 4 of the complaints include a mileage, and 0% of those were filed for vehicles with under 50,000 miles; the median is 111,566 miles. Of all complaints, 2 involved a crash, 1 a fire, 1 an injury, according to the filers. NHTSA lists 0 recall campaigns and 16 technical service bulletins for this model year. Brakes complaints overlap with 2 technical service bulletins filed under the same part. Transmission and drivetrain complaints overlap with 5 technical service bulletins 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.
- Brakes15 44%
- Engine cooling4 12%
- Fuel system3 8.8%
- Electrical system2 5.9%
- Seat belts2 5.9%
- Tires2 5.9%
- Vehicle speed control2 5.9%
Also reported: Steering (1), Body and structure (1).
Example complaints
Brakes: “1997 Mitsubishi Diamante purchased new from ron bouchard's in september, 1997. I have had problems with this vehicle since december, 1997. Ron bouchard's has picked this vehicle up with a flat bed truck three separate occasions, and it has been driven into the dealership numerous times. Please contact me and I will be happy to supply additonal information.”
NHTSA complaint #701209, filed 1998-12Transmission and drivetrain: “Safety - transmission: at 9,500 miles my car started lurching when stepping on the gas from a stop. It supposedly was repaired but has continued to be problem and each time I bring it in for service the dealer can not recreate the problem. Since I had not heard that this has been on going problem with this model, I thought it must be something that I had done. Upon reviewing the information of nhsta, I realize that the dealers and Mitsubishi are deliberately hiding this problem. Safety - fuel tank: my fuel tank began leaking at 59,560 miles and when the dealer removed it had 3 stress wholes. …”
NHTSA complaint #758506, filed 2002-02Engine cooling: “Heater core randomly cracked one day, causing a tear-like spill of anti-freeze through the top of the radiator. Car was taken to a mechanic and we tried welding the cracks. Anti-freeze still spilled out and anti-freeze smell came in through air events and the liquid also burned, causing smoke to come out from under the hood.”
NHTSA complaint #10193546, filed 2007-06Fuel system: “Dt: consumer had 1997 Mitsubishi Diamante. Consumer took vehicle to dealer,. Vehicle had a gas leak, dealer could not find hole in gas tank, consumer replaced gas tank, about 8 months after gas tank was replaced the vehicle exploded.”
NHTSA complaint #10124674, filed 2005-06, 78,000 milesMileage when problems were reported
0% of the 4 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 111,132 and 112,000 miles.
Complaints by year filed
Trend: stable. Complaints filed in the last 3 full calendar years are within 25% of the 3 years before.
Fuel economy and running cost
EPA ratings for each 1997 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 | 3.5L 6-cyl | 4-speed automatic | 16 | 24 | 19 | $4,350 |
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
NHTSA lists no recall campaigns for the 1997 Mitsubishi Diamante in the data used here. A recall can apply to some vehicles of a model year and not others, so check a specific vehicle by 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. 16 on record; the latest 10 are shown.
- 10211530Apr 7, 2022Other or unknown, Exterior lighting. This Technical Service Bulletin was sent to dealers to explain the difference between normal dew condensation, which is a natural phenomenon, and water penetration caused by improper sealing or a…
- 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.
- 10170074Aug 28, 2015Transmission and drivetrain, Wheels, Engine cooling…. This is a service newsletter (Tech Talk) that was sent out to dealers.
- 10170070Jul 29, 2015Equipment. This TSB contains troubleshooting steps for diagnosis of various customer complaints relating to the audio system speakers in Mitsubishi vehicles equipped with original equipment audio components.
- 10170071Jul 22, 2015Transmission and drivetrain, Fuel system, Suspension…. This is a service newsletter (Tech Talk) that was sent out to dealers.
- 10170099Mar 5, 2013Equipment. This is an index of Tech Talk newsletter articles released in 2012.
- 10170096Mar 5, 2013Wheels, Transmission and drivetrain, Steering, Electrical…. This is a service newsletter (Tech Talk) that was sent out to dealers.
- 10170100Feb 6, 2013Fuel system, Electrical system, Transmission and…. This is a service newsletter (Tech Talk) that was sent out to dealers.
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 1997 Mitsubishi Diamante have?
NHTSA recorded 34 consumer complaints for the 1997 Mitsubishi Diamante as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 1997 Mitsubishi Diamante is reported most often?
Brakes is named most often, in 15 complaints (44% of the total), followed by transmission and drivetrain with 10.
Has the 1997 Mitsubishi Diamante been recalled?
NHTSA lists no recall campaigns for this model year in the data used here. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
What gas mileage does the 1997 Mitsubishi Diamante get?
The EPA rates the 1997 Mitsubishi Diamante (Diamante, 3.5L 6-cyl) at 19 mpg combined, 16 city and 24 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 1997 Mitsubishi Diamante reported?
Among the 4 complaints that include a mileage, the median is 111,566 miles and the middle half falls between 111,132 and 112,000 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. 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.