1999 Mitsubishi Diamante: Reliability Data
When Do Complaints Happen?
Distribution of NHTSA complaints by vehicle mileage at time of report.
What Fails?
Most reported component issues from NHTSA complaints.
Severity Assessment
Sample Complaint Reports
"PULLS TO THE RIGHT WHEN ACCERATING AT HIGHWAY SPEEDS. FROM 2000 MILES -4000 PULLED TO RIGHT AT ALL SPEEDS. NOW ONLY HIGHWAY.MITSUBISHI CLAIMS THIS PULLING IS " NORMAL TORQUE STEER". ( SO WAS THE FORD PINTO'S GAS TANK PROBLEMS) IF YOU ARE NOT PREPARED FOR THE PULL YOU WILL GO OFF THE ROAD OR INTO TH..."
"NO SUMMARY LISTED FOR ABOVE VEHICLES. *AK"
"ROTORS WARPED AT 14444 MILES, DEALER TURNED THEM UNDER WARRANTY. THEY GOT WARPED AGAIN AT 18700 MILE, BUT DEALER REFUSED TO ADDRESS THE ISSUE, CITING DRIVER'S DRIVING HABITS. *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.
Where Are Complaints Coming From?
Top states by complaint count.
Who Files Complaints?
Mitsubishi Diamante — Other Years
See how this model compares across different model years.
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
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