Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
80–25K
1925–50K
3750–75K
2075–100K
7100–150K
1150K+
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
79,000 miles · Jul 21, 2006
Engine And Engine CoolingEquipment
THIS IS THE SECOND TIME I AM COMPLAINING ABOUT THE SAME PROBLEM. THE END OF JUNE 2006 I DROVE TO WORK AND REACHED DOWN TO PICK SOME STUFF UP OFF THE PASSENGER SIDE FLOOR MAT. IT ENDED UP BEING SOAKED. AT FIRST I THOUGHT SOME WATER HAD COME IN BECAUSE THE PAST FEW DAYS OUR AREA HAD TORRENTIAL RAINS. WHEN I GOT HOME THE NEXT DA…
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THIS IS THE SECOND TIME I AM COMPLAINING ABOUT THE SAME PROBLEM. THE END OF JUNE 2006 I DROVE TO WORK AND REACHED DOWN TO PICK SOME STUFF UP OFF THE PASSENGER SIDE FLOOR MAT. IT ENDED UP BEING SOAKED. AT FIRST I THOUGHT SOME WATER HAD COME IN BECAUSE THE PAST FEW DAYS OUR AREA HAD TORRENTIAL RAINS. WHEN I GOT HOME THE NEXT DAY I TOOK UP THE FLOOR MAT TO DRY IT OUT AND NOTICE ALL THE LIQUID UNDER IT WAS GREENISH YELLOW. IN MY MIND I WENT CRAZY BECAUSE THE SAME THING HAD HAPPENED TO ME A YEAR AND 2 WEEKS EARLIER. ONCE AGAIN THE HEATER CORE BECAME FAULTY AND POURED THE ENGINE COOLANT INTO THE PASSENGER SPACES. WONDERFUL, SINCE MY WIFE WAS 8 MONTHS PREGNANT, GREAT FOR HER TO BE BREATHING THOSE CHEMICALS. I HAVE TO SAY I WAS FORTUNATE THAT IT DIDN'T LEAK ON ANY OF THE COMPUTER COMPONENTS, LIKE HAS HAPPENED TO OTHERS, ESPECIALLY WHILE I WAS DRIVING. WOULD HAVE DEFINITELY CAUSED A SAFETY ISSUE. IT JUST BLOWS MY MIND THAT I HAVE HAD TO PAY FOR THE SAME SERVICE TWICE IN ABOUT A YEAR, ON A CAR THAT HAS LESS THAN 80,000 MILES ON IT. I REALLY HOPE THE NHTSA LOOKS INTO MAKING THIS A RECALL ISSUE, BECAUSE IT IS JUST HAPPENING TO TOO MANY CONSUMERS. JUST IMAGINE ALL THOSE PEOPLE WHO DON'T EVEN KNOW THEY CAN FILE A COMPLAINT. YES, I KNOW THERE WERE NO DEATHS OR INJURIES IN MY CASE, BUT WHEN THE COOLANT LEAKS ON THE COMPUTER BRAIN OF THE CAR, IT COULD BECOME A REAL ISSUE IF DRIVING ON THE HIGHWAY OR NAVIGATING CROWDED STREETS IN TOWN. THE POWER STEARING OR ANTILOCK BRAKES WOULD SHUT DOWN IF THE COMPUTER CRASHED FROM GETTING WET.
NHTSA ODI #10163041
60,000 miles · Jun 1, 2006
Visibility
THE HEATER CORE HAS BEEN LEAKING FOR ABOUT 2 YEARS ON MY 2002 DIAMANTE. THIS CAUSES FUMES TO TAKE OVER MY CAR AND I CAN NOT SEE OUT OF MY WINDSHIELD. THERE IS ALSO SOME SORT OF ELECTRICAL PROBLEM THAT CAUSES MY CAR TO DIE WHEN IDLE AT STOPS OR WHEN I LET OFF THE GAS. THIS IS VERY DANGEROUS FOR ME. *NM
NHTSA ODI #10158806
44,000 miles · Apr 26, 2006
Visibility
DT*: THE CONTACT STATED THE DEFROSTER FAILED AND WOULD NOT DEFROST THE WINDSHIELD. THE DEALERSHIP DETERMINED A CLIP IN THE SYSTEM CAME LOOSE AND THE CLIP WAS RECONNECTED. NOW, SIX MONTHS LATER, THE PROBLEM HAS RETURNED AND THE DEALERSHIP DETERMINED THE CLIP NEEDS TO BE REPLACED.
NHTSA ODI #10156147
37,000 miles · Apr 5, 2006
Visibility
WINDSHIELD FOGGING UP WITH FILM AND DEFOG NOT EVEN TOUCHING IT. NOTICED SMOKY LIKE AIR COMING FROM UNDER PASSENGER SIDE DASH. AC IS NOW FLAKY. SOMETIMES WILL WORK SOMETIMES WON'T. MOST LIKELY HEATER CORE IS DEFECTIVE OR LEAKING AS STATED IN MITSUBISHI DIAMANTE TSB. CAR IS 2002 WITH ROUGHLY 40K MILES ON IT. RIDICULOUS. FROM…
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WINDSHIELD FOGGING UP WITH FILM AND DEFOG NOT EVEN TOUCHING IT. NOTICED SMOKY LIKE AIR COMING FROM UNDER PASSENGER SIDE DASH. AC IS NOW FLAKY. SOMETIMES WILL WORK SOMETIMES WON'T. MOST LIKELY HEATER CORE IS DEFECTIVE OR LEAKING AS STATED IN MITSUBISHI DIAMANTE TSB. CAR IS 2002 WITH ROUGHLY 40K MILES ON IT. RIDICULOUS. FROM WHAT I HAVE READ ONLINE MOST DEALERS ARE CHARGING UP TO $1200 TO FIX THIS. THIS IS NOT JUST A SAFETY HAZARD BUT A HEALTH HAZARD DEPENDING ON HOW LONG ME AND MY FAMILY HAVE BEEN BREATHING IN CONDENSED ANTIFREEZE AND NOT KNOWING IT. WILL NEVER BUY A MITSUBISHI AGAIN!! *NM
NHTSA ODI #10154613
Mileage unknown · Apr 5, 2006
Fuel System, Gasoline
OCPL.COM EPNET.COM AUTO REPAIR REFERENCE CENTER MISUBISHI MOTORS TECH INFORMATION UPDATE TECHNICAL SERVICE BULLETIN NO: TSB-03-13-007 ODI ID NUMBER: 10152897 DATE: OCTOBER/2003 MODEL: 1997-2003 DIAMANTE MODELS PRODUCED BEFORE 7/7/03 PART: MR908180 DESC: FUEL TANK PUMP AND GAUGE ASSEMBLY SUBJ:LOW FUEL WARNING LIGHT…
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OCPL.COM EPNET.COM AUTO REPAIR REFERENCE CENTER MISUBISHI MOTORS TECH INFORMATION UPDATE TECHNICAL SERVICE BULLETIN NO: TSB-03-13-007 ODI ID NUMBER: 10152897 DATE: OCTOBER/2003 MODEL: 1997-2003 DIAMANTE MODELS PRODUCED BEFORE 7/7/03 PART: MR908180 DESC: FUEL TANK PUMP AND GAUGE ASSEMBLY SUBJ:LOW FUEL WARNING LIGHT ON SOME AFFECTED VEHICLES, THE LOW FUEL WARNING LIGHT MAY NOT ILLUMINATE UNTIL AFTER THE FUEL GAUGE REACHES "E". THE WARNING LIGHT SHOULD ILLUMINATE WHEN THERE IS APPROXIMATELY 3.7 GALLONS OF FUEL REMAINING. THE FUEL GAUGE SENDING UNIT HAS BEEN IMPROVED TO ELIMINATE CONDITION. IMPROVED PARTS HAVE A WHITE MARK LOCATED ABOVE THE LOWER FUEL WARNING THERMISTOR. *NM
NHTSA ODI #10154602
Mileage unknown · Mar 26, 2006
Visibility
CONTINUAL ODD ODOR ENTERING CABIN OF CAR. IT SMELLS SWEET LIKE MAPLE SYRUP. IT OCCURS WHEN I USE HEATER AND ODOR IS EMITTED THROUGH VENTS. I BELIEVE IT IS ANTI-FREEZE THAT HAS LEAKED, I AM SMELLING ANTI-FREEZE AND I'M CONCERNED FOR MY HEALTH. I HAVE READ NUMEROUS COMPLAINTS IN MITSUBISHI DIAMANTE ONLINE FORUMS ABOUT THIS PRO…
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CONTINUAL ODD ODOR ENTERING CABIN OF CAR. IT SMELLS SWEET LIKE MAPLE SYRUP. IT OCCURS WHEN I USE HEATER AND ODOR IS EMITTED THROUGH VENTS. I BELIEVE IT IS ANTI-FREEZE THAT HAS LEAKED, I AM SMELLING ANTI-FREEZE AND I'M CONCERNED FOR MY HEALTH. I HAVE READ NUMEROUS COMPLAINTS IN MITSUBISHI DIAMANTE ONLINE FORUMS ABOUT THIS PROBLEM. THERE IS A HUGE NUMBER OF HEATER CORE HOSE O-RING GASKET FAILURES CAUSING LEAKS NEAR HEATER CORE. APPARENTLY IT ALSO DRIPS ONTO COMPUTER CONTROL UNIT ALSO. *JB
NHTSA ODI #10153724
Mileage unknown · Mar 16, 2006
Fuel System, Gasoline
FUEL LEVEL GAUGE STUCK NEAR HALF FULL. *NM
NHTSA ODI #10152897
43,310 miles · Mar 15, 2006
Visibility
STRONG COOLANT (ANTI-FREEZE) SMELL IN CAR. WINDOWS FOGGED UP AND COULD NOT SEE AND PUFFS OF SMOKE COMING FROM VENTS. DEALER INFORMED ME HEATER CORE NEEDED REPLACING. ALSO STATED THAT ALTHOUGH IT WAS KNOWN ISSUE WITH VEHICLE MITSUBISHI WOULD NOT TAKE CARE OF COST. MITSUBISHI HAS EVEN ISSUED A TECH PUB ON PARTS NEEDED TO REPAIR TH…
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STRONG COOLANT (ANTI-FREEZE) SMELL IN CAR. WINDOWS FOGGED UP AND COULD NOT SEE AND PUFFS OF SMOKE COMING FROM VENTS. DEALER INFORMED ME HEATER CORE NEEDED REPLACING. ALSO STATED THAT ALTHOUGH IT WAS KNOWN ISSUE WITH VEHICLE MITSUBISHI WOULD NOT TAKE CARE OF COST. MITSUBISHI HAS EVEN ISSUED A TECH PUB ON PARTS NEEDED TO REPAIR THIS PROBLEM BECAUSE THEY WERE EXPERIENCING A SHORTAGE. IT TOOK FOUR DAYS TO GET A HEATER CORE FOR MY VEHICLE DUE TO A CRITICAL SHORTAGE OF HEATER CORES. *NM
NHTSA ODI #10152758
82,401 miles · Mar 6, 2006
Visibility
NOTICED BAD ODOR IN THE VEHICLE FOLLOWED BY THE WINDOWS FOGGING UP AND THE HEATER NOT WORKING A FEW DAYS LATER. REPAIR SHOP STATED THAT THE HEATER CORE NEEDS TO BE REPLACED. THIS IS UNUSUAL FOR CARS THAT ARE ONLY A FEW YEARS OLD AND HAVE LOW MILEAGE. REPAIR WOULD BE AROUND $1000.00. I HAVE THE 2002 DIAMANTE AND THIS PART WA…
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NOTICED BAD ODOR IN THE VEHICLE FOLLOWED BY THE WINDOWS FOGGING UP AND THE HEATER NOT WORKING A FEW DAYS LATER. REPAIR SHOP STATED THAT THE HEATER CORE NEEDS TO BE REPLACED. THIS IS UNUSUAL FOR CARS THAT ARE ONLY A FEW YEARS OLD AND HAVE LOW MILEAGE. REPAIR WOULD BE AROUND $1000.00. I HAVE THE 2002 DIAMANTE AND THIS PART WAS VERY HARD TO FIND. EVEN THE DEALERSHIP HAD TO ORDER IT. CAN ANYTHING BE DONE TO HELP WITH THIS COST. JUST A STRUGGLING MAN TRYING TO PROVIDE FOR A FAMILY IN A HONEST WAY. PLEASE HELP!!*JB
NHTSA ODI #10151855
60,000 miles · Mar 5, 2006
Suspension
NOTICED RECENTLY PURCHASED REAR TIRES WERE BALDING ON INSIDE CAMBER AND A NOISE WAS DETECTED WHEN ROUNDING CORNERS. WENT TO REPLACE TIRES AND THE MECHANIC "COULD NOT ALIGN THE CAR WITHIN MFGR SPECS". BROUGHT TO THE DEALER SERVICE DEPARTMENT AND WAS ADVISED THE REAR BUSHINGS NEEDED TO BE REPLACED. SEEMS LIKE AND UNUSUAL REPAIR FO…
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NOTICED RECENTLY PURCHASED REAR TIRES WERE BALDING ON INSIDE CAMBER AND A NOISE WAS DETECTED WHEN ROUNDING CORNERS. WENT TO REPLACE TIRES AND THE MECHANIC "COULD NOT ALIGN THE CAR WITHIN MFGR SPECS". BROUGHT TO THE DEALER SERVICE DEPARTMENT AND WAS ADVISED THE REAR BUSHINGS NEEDED TO BE REPLACED. SEEMS LIKE AND UNUSUAL REPAIR FOR A CAR OF ITS AGE AND MILEAGE. THE REPAIR IS SCHEDULED TO BE COMPLETED THIS WEEK. *NM
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.
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.
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.
2002 Mitsubishi Diamante Problems, Complaints & Recalls | Skip That Year