Diamante (2002)
Engine Reliability Ratings
6G74
3.5L 6-cyl / 205 hpView details
Complaint Breakdown
Known Issues
Mitsubishi Diamante Unidentified Engine
View details
Complaint Breakdown
Known Issues
Show 2 additional engine variants with limited data
3.5-V6-Gas
3.5L 6-cylView details
Complaint Breakdown
Known Issues
3.0-V6-Gas
3.0L 6-cylView details
Complaint Breakdown
Known Issues
Vehicle-Level Issues
These issues affect the Mitsubishi Diamante regardless of engine variant.
Recalls (3)
CERTAIN SPORT UTILITY AND PASSENGER VEHICLES FAIL TO COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, "CHILD RESTRAINT ANCHORAGE SYSTEMS." THE OWNER'S MANUAL DOES NOT CONTAIN A STEP-BY-STEP DESCRIPTION FOR HEADREST ADJUSTMENT WHEN INSTALLING A CHILD RESTRAINT SYSTEM (CRS) TETHER STRAP.
CERTAIN PASSENGER VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, 'OCCUPANT CRASH PROTECTION.' THE BILINGUAL ENGLISH/SPANISH REMOVABLE AIR BAG WARNING LABELS AFFIXED TO THE DASH AND TO THE SUNVISOR DO NOT MEET THE SIZE REQUIREMENTS OF THE STANDARD.
ON CERTAIN PASSENGER VEHICLES, THE MAIN UNDER HOOD ELECTRICAL WIRING HARNESS MAY HAVE INSUFFICIENT CLEARANCE BETWEEN THE ENGINE CONTROL HARNESS AND THE EXHAUST HEAT SHIELD. AS A RESULT, THE HARNESS COULD COME IN CONTACT WITH THE HEAT SHIELD, WHICH COULD RESULT IN MELTING OF THE HARNESS INSULATION.
Alternatives in Compact Sedan
Frequently Asked Questions
What are the most common 2002-2002 Mitsubishi Diamante problems?
The 2002-2002 Mitsubishi Diamante has accumulated 133 NHTSA complaints. The most frequently reported problem areas are Engine, Cooling System, Transmission. As with any used vehicle, an inspection before buying and a vehicle history report are recommended.
Which Mitsubishi Diamante engine is most reliable?
The 2002-2002 Mitsubishi Diamante was offered with 4 engine options. Based on NHTSA complaint data, the 3.5L 6-cyl has the lowest complaint density and is considered the most reliable choice for buyers.
Is the 2002-2002 Mitsubishi Diamante a good used car?
The 2002-2002 Mitsubishi Diamante can be a sound used car depending on trim, mileage, and maintenance history. With 133 total NHTSA complaints on record, prospective buyers should review the known problem areas and check for open recalls before buying.
How many NHTSA complaints does the 2002-2002 Mitsubishi Diamante have?
The 2002-2002 Mitsubishi Diamante has 133 complaints filed with NHTSA as of our latest data pull. Complaint counts reflect owner-reported issues and do not necessarily indicate defects or safety risks on their own.
What recalls affect the 2002-2002 Mitsubishi Diamante?
There are 3 NHTSA recalls affecting some 2002-2002 Mitsubishi Diamante vehicles. Recall status varies by VIN — check the NHTSA recall database at recalls.nhtsa.dot.gov with your specific VIN to confirm which campaigns apply.
What should I check before buying a used Mitsubishi Diamante?
Before buying a used Mitsubishi Diamante, verify all open recalls are completed via the NHTSA VIN lookup tool. Pay particular attention to Engine, Cooling System, Transmission, which are the most commonly reported problem areas. Request maintenance records, have an independent mechanic inspect the vehicle, and run a vehicle history report to check for prior accidents or title issues.
Does the Diamante have NHTSA crash test ratings?
NHTSA has not published crash test ratings for the 2002 Mitsubishi Diamante. Not all vehicles are tested each year. For the latest NHTSA safety information, visit nhtsa.gov/ratings.
Data from NHTSA federal complaints database. 133 complaints analyzed. Data confidence: high. Last updated: 2026-05-23.