1998 Mitsubishi Diamante: Reliability Data

35
Total Complaints
58,000mi
Median Mileage
Heater Core
Top Issue
1
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

57,557 25th Percentile
58,000 Median Mileage
81,250 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

Heater Core
13
Disc
2
Vehicle Speed Control
1
Antilock/Traction Control/Electronic Limited Slip
1
Lugs/Nuts/Bolts/Studs
1
Windshield Wiper/Washer
1
Module
1
Tires
1
Power Steering Fluid
1
Door
1

Severity Assessment

1
Crashes
0
Fires
4
Injuries
0
Deaths

Sample Complaint Reports

"WINDSHIELD WIPER BLADES DON'T CONTACT THE WINDSHIELD IN COLD WEATHER DUE TO A STIFF HINGE NEAR THE BASE OF THE WIPER ARM. CAN BE TEMPORARILY CORRECTED BY USING A LIGHT, PENETRATING LUBRICANT, BUT PROBLEM RETURNS AFTER CAR WASH."
"THROTTLE GOT STUCK, MAKING IT HARD TO STOP. OWNER SAID THE GASKET CLAMP FOR THE HOSE WAS TOO CLOSE TO THE THROTTLE. *AK"
"WHILE DRIVING AND AND APPLYING THE BRAKES TO COME TO A STOP , VEHICLE VIBRATED EVEN WHEN TAKING OFF VERY SLOWLY. *AK"

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

When Does Each Component Fail?

Median mileage at complaint for top components.

Heater Core 13 complaints
25th: 56,231 mi Median: 74,000 mi 75th: 91,000 mi

Where Are Complaints Coming From?

Top states by complaint count.

CA: 8 TX: 7 IL: 3 NY: 3 VA: 2 NC: 2 MA: 1 OH: 1 AE: 1 AL: 1

Who Files Complaints?

20%
Original Owners
80%
Second+ Owners

Mitsubishi Diamante — Other Years

See how this model compares across different model years.

YearComplaintsCrashes
1992602
19934310
1994336
1997513
1999260
2000633
2001930
20021629
2003751

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28