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2002 Mitsubishi Diamante

Owner reports · Recalls · Investigations

More warning signs than most Diamante years

Owner complaints for the 2002 Mitsubishi Diamante are substantially higher than the model-year median of 31.5.

About this comparison →

How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

92 reports with mileage · 31 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Visibility. Review the 71 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. Review the 38 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

4 crash reports0 fire reports8 injury reports

What owners actually said

123 reports
67,800 miles · Feb 8, 2008
Engine And Engine CoolingVisibility

TL*THE CONTACT OWNS A 2002 MITSUBISHI DIAMANTE. THE CHECK ENGINE LIGHT BEGAN ILLUMINATING, THE HEATER COIL WAS LEAKING, AND THE WINDOWS WERE STEAMING. THE CONTACT SMELLED A FOUL ODOR COMING FROM THE VEHICLE. A MECHANIC DIAGNOSED THAT THE HEATER CORE NEEDED TO BE REPLACED. THE FAILURE MILEAGE WAS 67,800 AND CURRENT MILEAGE WA…

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TL*THE CONTACT OWNS A 2002 MITSUBISHI DIAMANTE. THE CHECK ENGINE LIGHT BEGAN ILLUMINATING, THE HEATER COIL WAS LEAKING, AND THE WINDOWS WERE STEAMING. THE CONTACT SMELLED A FOUL ODOR COMING FROM THE VEHICLE. A MECHANIC DIAGNOSED THAT THE HEATER CORE NEEDED TO BE REPLACED. THE FAILURE MILEAGE WAS 67,800 AND CURRENT MILEAGE WAS 67,990.

NHTSA ODI #10217465

Mileage unknown · Feb 3, 2008
Visibility

WINDSHIELD FOG, SWEET SYRUP SMELL. *TR

NHTSA ODI #10216821

80,000 miles · Jan 30, 2008
Engine And Engine Cooling

I FOUND POSTINGS OF THE SAME HEATER CORE ISSUE. WINDSHIELD FOG AND THE AWFUL SYRUP SMELL OF ANITFREEZE. THERE NEEDS TO BE A RECALL AS YOU CAN CLEARLY SEE THE HISTORY OF COMPLAINTS DATING BACK TO 1995 OR EARLIER. PLEASE LOOK INTO THIS URGENT MATTER. *TR

NHTSA ODI #10216525

65,000 miles · Jan 26, 2008
Visibility

2002 MITSUBISHI DIAMANTE 65K MILES. FAILURE OF HEATER CORE/ HEATER CORE GASKETS/ O-RINGS. WINDSHIELD WILL NOT DEFOG, STRONG COOLANT ODOR AND RESIDUE ON WINDSHIELD AND SIDE WINDOWS. RESULTED IN DANGEROUSLY LOW VISIBILITY WHILE DRIVING. WINDSHIELD TOO FOGGY FOR SAFE DRIVING. STRONG SMELL OF ANTIFREEZE IN PASSENGER COMPT. HAD…

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2002 MITSUBISHI DIAMANTE 65K MILES. FAILURE OF HEATER CORE/ HEATER CORE GASKETS/ O-RINGS. WINDSHIELD WILL NOT DEFOG, STRONG COOLANT ODOR AND RESIDUE ON WINDSHIELD AND SIDE WINDOWS. RESULTED IN DANGEROUSLY LOW VISIBILITY WHILE DRIVING. WINDSHIELD TOO FOGGY FOR SAFE DRIVING. STRONG SMELL OF ANTIFREEZE IN PASSENGER COMPT. HAD TO OPEN WINDOWS IN SUB FREEZING TEMP TO GET FRESH AIR TO PASSENGER COMPT WHILE DRIVING. COST TO REPAIR ESTIMATED $800-$1100. PROBLEM APPEARS TO BE WIDESPREAD BASED ON COMPLAINTS FILED AT THIS NHTSA SITE AS SOME COMPLAINTS ARE CATEGORIZED UNDER DIFFERENT COMPONENT NAMES BUT HAVE SAME PROBLEM DESCRIPTIONS. GREATER THAN 60 COMPLAINTS BY MY COUNT FOR 2002 MODEL YEAR ALONE ON RELATIVELY LOW NUMBER OF VEHICLES SOLD IN US. *TR

NHTSA ODI #10216182

105,000 miles · Jan 25, 2008
Visibility

MY HEATER CORE REQUIRES REPLACEMENT. A FEW WEEKS AGO MY WINDSHIELD BECAME HAZY AND DIFFICULT TO DEFROST. I DID NOT REALIZE IT WAS FROM TOXIC ANTI-FREEZE LEAKING INTO THE CAR. *TR

NHTSA ODI #10216024

Mileage unknown · Jan 23, 2008
Engine And Engine CoolingPower Train

HEATER CORE DEFECTIVE AND LEAKED COOLANT UNDERDASH ON TO TRANSMISSION ECM AND NEUTRAL SAFETY SWITCH. BECAUSE OF THIS VERY COMMON MANUFACTURE DEFECT I HAD TO HAVE MY HEATER CORE, TRANSMISSION ECM, NEUTRAL SAFETY SWITCH REPLACE. AND MY TRANSMISSION REBUILD, NONE OF WHICH WERE WARRANTED BY THE MANUFACTURE AND WERE NOT CHEAP. *TR

NHTSA ODI #10215743

58,000 miles · Jan 17, 2008
Visibility

HEATER CORE - THE AIR THAT COMES OUT THE VENT WHEN I TURN MY HEATER ON, SMELLS LIKE ANTIFREEZE. MY WINDOWS FOG UP AND I WORK AT NIGHT. ITS KIND OF HARD TO KEEP WIPING DOWN THE WINDSHIELD CONSISTENTLY WITH MY HAND WHILE DRIVING. *TR

NHTSA ODI #10215215

Mileage unknown · Jan 15, 2008
Engine And Engine Cooling

HEATER CORE LEAKING INTO PASSENGER SIDE OF CAR, RELEASING COOLANT VAPOR INTO CAR CABIN. *TR

NHTSA ODI #10214885

100 miles · Jan 2, 2008
Visibility

TL*THE CONTACT OWNS A 2002 MITSUBISHI DIAMANTE. WHILE DRIVING 45 MPH, THE CONTACT NOTICED LEAKAGE ON THE INSIDE OF THE VEHICLE. IN ADDITION, SHE WAS UNABLE TO SEE OUT OF THE WINDSHIELD DUE TO THE FOG. THE DEALER STATED THAT THERE WAS AN A/C EVAPORATOR WAS CRACKED AND THEY MADE THE REPLACEMENT. THE CONTACT STATED THAT THE FAIL…

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TL*THE CONTACT OWNS A 2002 MITSUBISHI DIAMANTE. WHILE DRIVING 45 MPH, THE CONTACT NOTICED LEAKAGE ON THE INSIDE OF THE VEHICLE. IN ADDITION, SHE WAS UNABLE TO SEE OUT OF THE WINDSHIELD DUE TO THE FOG. THE DEALER STATED THAT THERE WAS AN A/C EVAPORATOR WAS CRACKED AND THEY MADE THE REPLACEMENT. THE CONTACT STATED THAT THE FAILURE OCCURRED AGAIN IMMEDIATELY AFTER THE REPLACEMENT. THE DEALER STATED THAT THE HEATER CORE CAUSED THE FAILURE AND THEY HAVE REPLACED IT ON FIVE OCCASIONS HOWEVER, THE FAILURE CONTINUED TO OCCUR. AS A RESULT, THE VENTS WOULD DISPERSE ANTI-FREEZE INSIDE THE VEHICLE WHEN THE HEATER OR DEFROSTER WAS ACTIVATED. AS OF JANUARY 2, 2008, THE DEALER HAD NOT REPAIRED THE VEHICLE. THE FAILURE MILEAGE WAS 100 AND CURRENT MILEAGE WAS 65,000.

NHTSA ODI #10213475

42,270 miles · Dec 29, 2007
Visibility

02 DIAMANTE WITH APPROX 42, 000 ML - UPON STARTING THE CAR THE FRONT WINDOW BEGINS FOGGING UP AND THE ENTIRE CAR THEN FILLS WITH STEAM THAT IS SWEET BUT OVERWHELMING. IT GETS SO BAD IT IS NEARLY IMPOSSIBLE TO SEE OUT THE FRONT WINDSHIELD AND THEN THE SMELL OVERWHELMS YOU WITHIN ABOUT 5-10 MINUTES FORCING THE DRIVER TO PULL OVER…

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02 DIAMANTE WITH APPROX 42, 000 ML - UPON STARTING THE CAR THE FRONT WINDOW BEGINS FOGGING UP AND THE ENTIRE CAR THEN FILLS WITH STEAM THAT IS SWEET BUT OVERWHELMING. IT GETS SO BAD IT IS NEARLY IMPOSSIBLE TO SEE OUT THE FRONT WINDSHIELD AND THEN THE SMELL OVERWHELMS YOU WITHIN ABOUT 5-10 MINUTES FORCING THE DRIVER TO PULL OVER OR DRIVE WITH THE WINDOWS DOWN (NOT EASY AT 18 DEG OUTSIDE AND 2 KIDS UNDER 5 IN THE BACK). SYMPTOMS INDICATE THAT THIS IS A HEATER CORE PROBLEM THAT DEALERS ARE AWARE OF AND IS A VERY COMMON PROBLEM THAT THEY SEE APPROX 2-3 TIMES A MONTH WITH A CHARGE OF $1000.00 - $1400.00 TO FIX AND THAT IF NOT FIXED THEN THE MAIN COMPUTER FOR THE CAR WOULD SHORT OUT. SO JUST LOOKING AT 1 DEALER LOW END NUMBERS: 2 HEATER CORES PER MONTH * $1200= $2400*12MONTHS = $28,800 A YEAR PER DEALER FOR A KNOWN PROBLEM. ALSO MEDICALLY SPEAKING BREATHING ANTI-FREEZE MAY CAUSE IRRITATION OF THE NOSE AND THROAT WITH HEADACHE, PARTICULARLY FROM MISTS. HIGH VAPOR CONCENTRATIONS CAUSED, FOR EXAMPLE, BY HEATING THE MATERIAL IN AN ENCLOSED AND POORLY VENTILATED WORKPLACE, MAY PRODUCE NAUSEA, VOMITING, HEADACHE, DIZZINESS AND IRREGULAR EYE MOVEMENTS. FOR HEALTHY PEOPLE THIS IS PROBLEM WHAT ABOUT THOSE WITH COMPROMISED IMMUNE SYSTEMS. *TR

NHTSA ODI #10213153

Official recalls

3

04V428000 · Equipment:other:labels

Sep 1, 2004

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.

Consequence & remedy

Consequence: THIS DOES NOT MEET THE REQUIREMENTS OF THE STANDARD.

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. IN ADDITION, ALL CURRENT 2000-2004 NATIVA OWNERS WILL ALSO RECEIVE REPLACEMENT AIR BAG ALERT LABELS FOR THE SUN VISORS. THIS RECALL IS EXPECTED TO BEGIN DURING MARCH OR APRIL 2005. THE NOTIFICATION TO THE NATIVA OWNERS IS EXPECTED TO BEGIN DURING APRIL OR MAY 2005. OWNERS SHOULD CONTACT MITSUBISHI CARIBBEAN AT 1-787-251-8715.

04V067000 · Equipment:other:owners/service/other Manual

Feb 11, 2004

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.

Consequence & remedy

Consequence: IF THE TETHER STRAP IS IMPROPERLY INSTALLED TO THE TETHER ANCHOR, THE CHILD SAFETY SEAT MAY NOT BE SUFFICIENT RESTRAINED. IN THE EVENT OF A CRASH, THE CHILD COULD BE INJURED.

Remedy: A LETTER OUTLINING THE PROBLEM WILL BE SENT TO OWNERS ALONG WITH A STICKER CONTAINING THE CORRECT INSTRUCTIONS AS WELL AS INSTRUCTIONS ON WHERE TO AFFIX THE STICKER IN THE OWNER'S MANUAL. THE RECALL BEGAN ON MARCH 29, 2004. OWNERS SHOULD CONTACT MITSUBISHI AT 1-888-648-7820.

02V100001 · Electrical System:wiring:front Underhood

Apr 7, 2002

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.

Consequence & remedy

Consequence: THE MELTING OF THE HARNESS INSULATION COULD RESULT IN GROUNDING OF THE CRANK ANGLE SENSOR WIRING, CAUSING THE ENGINE TO RUN ERRATICALLY OR STOP SUDDENLY, INCREASING THE RISK OF A CRASH.

Remedy: DEALERS WILL INSPECT THE HARNESS FOR DAMAGE AND, IF NONE IS EVIDENT, WILL TIE THE HARNESS BACK TO PREVENT THE HARNESS FROM EVER COMING INTO CONTACT WITH THE HEAT SHIELD. ANY HARNESS THAT SHOWS EVIDENCE OF DAMAGE WILL BE REPAIRED AS NECESSARY AND THEN TIED BACK TO PREVENT FUTURE DAMAGE. OWNER NOTIFICATION BEGAN MAY 13, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT MITSUBISHI AT 1-800-222-0037.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.