2004 Mitsubishi Diamante
Only 3 complaints on file — too few for a fair verdict.
This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.
Only 3 complaints on file — too few for a fair verdict. The data below is complete but unranked.
COMPLAINTS PER YEAR
View as data table
| Year | Complaints |
|---|---|
| 1992 | 42 |
| 1993 | 29 |
| 1994 | 27 |
| 1995 | 12 |
| 1997 | 34 |
| 1998 | 27 |
| 1999 | 23 |
| 2000 | 51 |
| 2001 | 78 |
| 2002 | 123 |
| 2003 | 56 |
| 2004 | 3 |
KNOWN PROBLEM AREAS
Only 3 complaints on file for this model year -- too few to rank by share. Raw counts only, below.
2 of 3 total reports mention: power train.
Show complaint excerpts
THE DIAMANTE HAS AN ODD ISSUE WHERE THE VEHICLE WILL NOT SHIFT GEARS CORRECTLY WHICH AN EXTREMELY DANGEROUS ISSUE FOR DRIVERS. THE INFORMATION BOARD SHOWS THE TRANSACTION RAPIDLY SWITCHING FROM NEUTRAL TO DRIVE EXCESSIVELY.
NHTSA ODI report, 20191108
THE MAIN ISSUE SEEMS TO BE A MANUFACTURING DEFECT IN THE WAVE/CUSHION SPRING LOCATED IN THE TRANSMISSION.
NHTSA ODI report, 20111115
1 of 3 total reports mentions: power train.
Show complaint excerpts
CPSC#I11B0131A. 2004 MITSUBISHI DIAMANTE. F4A51 AUTOMATIC TRANSMISSION FAILURE.
NHTSA ODI report, 20120613
SAFETY TIMELINE
CERTAIN PASSENGER VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO.
Remedy: MITSUBISHI CARIBBEAN WILL MAIL A CUSTOMER NOTIFICATION LETTER CONTAINING A WRITTEN DESCRIPTION AND A GRAPHIC OF THE BI-LINGUAL DASHBOARD AIR BAG WARNING LABEL.
Campaign 04V428000 — check if this car was fixed
BUY-SMART CHECKLIST
2004 Mitsubishi Diamante — pre-purchase inspection
- Test/inspect for power train issues (2 reports on file for this year).
- Test/inspect for power train issues (1 reports on file for this year).
- Verify recall 04V428000 (equipment) has been completed.
OTHER YEARS OF THIS MODEL
BEST YEARS
WORST YEARS
FAQ
Is the 2004 Mitsubishi Diamante reliable?
There isn't enough NHTSA complaint data on file yet to give this model year a verdict.
What are the most common problems with the 2004 Mitsubishi Diamante?
The most-reported component is power train, accounting for 67% of complaints on file.
How many recalls does the 2004 Mitsubishi Diamante have?
1 recall on file for this model year.
Data updated 2026-07-11 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.