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2000 Mitsubishi Diamante

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 2000 Mitsubishi Diamante do not stand out strongly from the model-year median of 31.5.

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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

22 reports with mileage · 29 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 27 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. Review the 7 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel System, Gasoline. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

3 crash reports0 fire reports3 injury reports

What owners actually said

51 reports
Mileage unknown · Apr 6, 2010
Vehicle Speed Control

2000 MITSUBISHI DIAMANTE. CONSUMER STATES VEHICLE SURGED FORWARD. *TGW THE CONSUMER STATED WHEN LEAVING A PARKING LOT AND ATTEMPTING TO PULL INTO TRAFFIC, THE VEHICLE BARELY MOVED AT 5 MPH, EVEN THOUGH HE WAS PRESSING ON THE ACCELERATOR AND THE RPM WAS NOT MOVING. AFTER GOING ABOUT 1/4 OF A MILE, ALL OF A SUDDEN THE VEHICLE …

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2000 MITSUBISHI DIAMANTE. CONSUMER STATES VEHICLE SURGED FORWARD. *TGW THE CONSUMER STATED WHEN LEAVING A PARKING LOT AND ATTEMPTING TO PULL INTO TRAFFIC, THE VEHICLE BARELY MOVED AT 5 MPH, EVEN THOUGH HE WAS PRESSING ON THE ACCELERATOR AND THE RPM WAS NOT MOVING. AFTER GOING ABOUT 1/4 OF A MILE, ALL OF A SUDDEN THE VEHICLE JUMPED INTO GEAR AND THE VEHICLE LURCHED FORWARD. THE NEXT DAY, A REPRESENTATIVE FROM MITSUBISHI WENT TO THE CONSUMER'S WORKPLACE AND EXAMINED THE VEHICLE. THE REPRESENTATIVE STATED THE THROTTLE CABLE NEEDED TO BE ADJUSTED AND SUGGESTED THE CONSUMER TAKE THE VEHICLE TO THE DEALER. THE CONSUMER STATED THE DEALER NEVER RECEIVED ANY INFORMATION TO ORDER A NEW CABLE AND THE HIS VEHICLE STILL HAS NOT BEEN FIXED. *JB

NHTSA ODI #10324254

Mileage unknown · Feb 10, 2010
Vehicle Speed Control

WHEN I FIRST START THE CAR, DRIVE ABOUT A HALF BLOCK, OBTAIN DESIRED SPEED, TAKE MY FOOT OFF THE ACCELERATOR, AND THEN WHEN THE CAR SLOWS DOWN, I PRESS DOWN ON THE ACCELERATOR, NOTHING HAPPENS. SO I PRESS DOWN FURTHER ON THE GAS PEDAL, AND SUDDENLY THE CAR LURCHES FORWARD OUT OF CONTROL. SO THEN I HAVE TO IMMEDIATELY TAKE MY FOO…

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WHEN I FIRST START THE CAR, DRIVE ABOUT A HALF BLOCK, OBTAIN DESIRED SPEED, TAKE MY FOOT OFF THE ACCELERATOR, AND THEN WHEN THE CAR SLOWS DOWN, I PRESS DOWN ON THE ACCELERATOR, NOTHING HAPPENS. SO I PRESS DOWN FURTHER ON THE GAS PEDAL, AND SUDDENLY THE CAR LURCHES FORWARD OUT OF CONTROL. SO THEN I HAVE TO IMMEDIATELY TAKE MY FOOT OFF THE GAS PEDAL AND BRAKE SLIGHTLY UNTIL THE CAR GOES THE RIGHT SPEED. THIS HAS HAPPENED ONLY WHEN THE CAR WAS COLD AND ONLY INTERMITTENTLY, ABOUT SEVEN TIMES IN THE LAST 10 YEARS. MY MECHANIC SUPPOSEDLY FIXED IT, BUT THE ACCELERATOR GOT STUCK AGAIN AFTER THE ALLEGED REPAIR. THERE WERE NO CONSEQUENCES EXCEPT FOR A NAGGING FEAR IN THE BACK OF MY MIND FOR THE LAST 10 YEARS. ANOTHER INTERMITTENT PROBLEM IS THAT THE LIGHTS FOR TCL AND FIX ENGINE SOON WILL COME ON WHILE I AM DRIVING, GO OFF WHEN I TURN OFF THE CAR, AND THEN STAY OFF FOR SEVERAL CAR TRIPS AND ONE OR THE OTHER LIGHT WILL COME ON AGAIN INTERMITTENTLY. *TR

NHTSA ODI #10308600

86,000 miles · Sep 29, 2008
Engine And Engine CoolingVisibility

MY WIFE AND I NOTICED ANTIFREEZE ODOR COMING IN THROUGH VENTS. WHEN OUR WINDOWS WOULD FOG, OUR DEFROSTER WOULDN'T WORK. THEN OUR PASSENGER SIDE FLOOR WAS SOAKED WITH ANTIFREEZE. WE TOOK THE CAR TO THE DEALER, OUR HEATER CORE WAS LEAKING. COST WAS $1300 TO REPAIR. MITSUBISHI SHOULD BE HELD RESPONSIBLE!! TOO MANY COMPLAINTS. …

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MY WIFE AND I NOTICED ANTIFREEZE ODOR COMING IN THROUGH VENTS. WHEN OUR WINDOWS WOULD FOG, OUR DEFROSTER WOULDN'T WORK. THEN OUR PASSENGER SIDE FLOOR WAS SOAKED WITH ANTIFREEZE. WE TOOK THE CAR TO THE DEALER, OUR HEATER CORE WAS LEAKING. COST WAS $1300 TO REPAIR. MITSUBISHI SHOULD BE HELD RESPONSIBLE!! TOO MANY COMPLAINTS. *TR

NHTSA ODI #10243955

43,000 miles · Nov 13, 2007
VisibilityInjury

FOR OVER 2 YEARS NOW I HAVE HAD PROBLEMS WITH AN ODOR IN MY 2000 DIAMANTI AND THE DEFOGGER NEVER SEEMED TO WORK ON THE WINDOWS. A COUPLE OF WEEKS AGO I SAW SOMETHING LEAK ONTO THE PASSENGER SIDE RUG BUT DIDN'T' T GUESS THAT THIS COULD HAVE SOMETHING TO DO WITH THE HEATER CORE. UPON TAKING IT TO MY DEALER I WAS TOLD THIS WAS H…

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FOR OVER 2 YEARS NOW I HAVE HAD PROBLEMS WITH AN ODOR IN MY 2000 DIAMANTI AND THE DEFOGGER NEVER SEEMED TO WORK ON THE WINDOWS. A COUPLE OF WEEKS AGO I SAW SOMETHING LEAK ONTO THE PASSENGER SIDE RUG BUT DIDN'T' T GUESS THAT THIS COULD HAVE SOMETHING TO DO WITH THE HEATER CORE. UPON TAKING IT TO MY DEALER I WAS TOLD THIS WAS HOLE IN THE HEATER CORE THAT HAD TO BE FIXED IMMEDIATELY BECAUSE IT WAS DANGEROUS AND HAZARDOUS TO MY HEALTH TO BREATH THE FUMES THAT WERE COMING OUT OF THE CORE. THE COST WOULD BE APPROXIMATELY $1200. I NOTICED I OFTEN HAD HEADACHES WHEN I DROVE LONG DISTANCES BUT WAS VERY CONCERNED WHEN MY GRANDCHILD BECAME VERY CAR SICK (WHICH HAD NEVER HAPPENED BEFORE) UPON RIDING IN MY CAR. I STILL DIDN'T ASSOCIATE THE HEATER WITH OUR PROBLEMS. I THINK THIS IS VERY DANGEROUS AND SOMETHING SHOULD BE RECALLED ON THESE. I RESENT THAT AFTER ONLY 40,000 MILES I MUST SPEND $1200 ON SOMETHING THAT IS OBVIOUSLY A MISTAKE ON MITSUBISHI'S PART SINCE IT IS NOT A WEAR FACTOR. *TR

NHTSA ODI #10208778

78,307 miles · Jul 1, 2007
Visibility

SUDDEN HEATER CORE GASKET LEAK, INSTANTANEOUS FOGGING OF ALL WINDOWS, CAUSING A SEVERE DRIVING HAZARD, ESPECIALLY WHEN IT HAPPENS AT HIGHWAY SPEEDS. *TR

NHTSA ODI #10195071

40,000 miles · Feb 7, 2007
Visibility

FRONT WINDSHIELD FOGS UP, STRONG SMELL OF ANTI-FREEZE, CAN'T CLEAR THE FOG WITH DEFOGGER, READ POTENTIAL RISKS TO HEALTH BECAUSE OF THE CONTACT TO ANTI-FREEZE FUMES. *JB

NHTSA ODI #10181870

Mileage unknown · Nov 8, 2005
Visibility

HEATING CORE IS LEAKING ANTIFREEZE ONTO OTHER COMPONENTS UNDER THE DASH; STRONG SMELL OF ANTIFREEZE WITHIN THE CAR; WINDOWS FOG UP UPON USING ANY OF THE VENTILATION SYSTEMS. *NM

NHTSA ODI #10142024

Mileage unknown · Oct 15, 2005
Visibility

I CURRENTLY HAVE WHAT IS DESCRIBED TO BE A "HEATER CORE FAILURE" IN MY 2000 MITSUBISHI DIAMANTE. I HAVE BEEN MADE AWARE THAT THIS ISSUE IS FAIRLY COMMON AMONGST DIAMANTES. ANY TIME I TURN ON THE HEATER, MY AUTOMOBILE IS FILLED WITH A NOXIOUS ODOR THAT I'M LEAD TO BELIEVE MIGHT BE DETRIMENTAL TO MY HEALTH. I AM ALSO UNABLE TO DEF…

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I CURRENTLY HAVE WHAT IS DESCRIBED TO BE A "HEATER CORE FAILURE" IN MY 2000 MITSUBISHI DIAMANTE. I HAVE BEEN MADE AWARE THAT THIS ISSUE IS FAIRLY COMMON AMONGST DIAMANTES. ANY TIME I TURN ON THE HEATER, MY AUTOMOBILE IS FILLED WITH A NOXIOUS ODOR THAT I'M LEAD TO BELIEVE MIGHT BE DETRIMENTAL TO MY HEALTH. I AM ALSO UNABLE TO DEFROST MY WINDOWS BECAUSE OF THIS PROBLEM. THIS CAUSES A DANGEROUS DRIVING CONDITION AS I'M FORCED TO CONSTANTLY WIPE THE WINDSHIELD WITH A PAPER TOWEL.*JB

NHTSA ODI #10139806

87,168 miles · Oct 11, 2005
Power TrainVisibility

VEHICLE CHECK ENGINE LIGHT CAME ON AND LOCKED INTO THIRD GEAR. NOTICED SMELL OF COOLANT INSIDE DRIVERS COMPARTMENT AND HAZING OF THE WINDSHIELD. BROUGHT VEHICLE TO DEALER TO HAVE PROBLEM IMPROPERLY DIAGNOSED AND HAD TO HAVE IT RE-TESTED TWO WEEKS LATER. HEATER CORE LEAKAGE HAS CAUSED DAMAGE TO THE ECU AND NOW BOTH HAVE TO BE …

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VEHICLE CHECK ENGINE LIGHT CAME ON AND LOCKED INTO THIRD GEAR. NOTICED SMELL OF COOLANT INSIDE DRIVERS COMPARTMENT AND HAZING OF THE WINDSHIELD. BROUGHT VEHICLE TO DEALER TO HAVE PROBLEM IMPROPERLY DIAGNOSED AND HAD TO HAVE IT RE-TESTED TWO WEEKS LATER. HEATER CORE LEAKAGE HAS CAUSED DAMAGE TO THE ECU AND NOW BOTH HAVE TO BE REPLACED. TOTAL COST OF REPAIR FOR BOTH WAS $3,357.62. COOLANT FUMES ARE VERY TOXIC AND CAUSE A SIGNIFICANT HEALTH RISK AND ECU FAILURE COULD EASILY RESULT IN A VERY SERIOUS ACCIDENT ON THE HIGHWAY OR ELSEWHERE. THE "FOGGING" OF THE WINDSHIELD IS A VISIBILITY HAZARD AS WELL CAUSED BY THE HOT COOLANT IN THE DEFROST VENTS. *JB

NHTSA ODI #10139382

54,000 miles · Sep 1, 2005
Visibility

THE HEATER CORE HAS FAILED FOR THE SECOND TIME. I PURCHASED THE CAR FROM A DEALER WITH 54,000 MILES ON IT AND AFTER 500 MILES THE HEATERCORE IS FRIED. THE WORST PART IS THAT WHEN I WENT TO THE MITSUBISHI DEALERSHIP TO GET MY REMOTE REPROGRAMMED I GOT THE PRINTOUT OF ALL THE PREVIOUS SERVICE THAT WAS DONE ON IT. THE HEATER CORE W…

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THE HEATER CORE HAS FAILED FOR THE SECOND TIME. I PURCHASED THE CAR FROM A DEALER WITH 54,000 MILES ON IT AND AFTER 500 MILES THE HEATERCORE IS FRIED. THE WORST PART IS THAT WHEN I WENT TO THE MITSUBISHI DEALERSHIP TO GET MY REMOTE REPROGRAMMED I GOT THE PRINTOUT OF ALL THE PREVIOUS SERVICE THAT WAS DONE ON IT. THE HEATER CORE WAS ALREADY REPLACED AT 24,000 MILES!!! DOES THIS MEAN THAT I WILL HAVE TO SPEND AROUND $1,000 EVERY 25K MILES THAT I DRIVE THE CAR??? MITSUBISHI, PLEASE ADDRESS THIS PROBLEM! REGARDING TO THE PROBLEM ITSELF... I GOT ALL THE USUAL SYMPTOMS - THE WINDSHIELD WAS FOGGING UP, THERE WAS A STRONG SMELL OF THE ANTIFREEZE IN THE CAR AND NOW THERE'S A POOL OF ANTIFREEZE BY THE PASSENGER'S SEAT. THIS CANNOT BE GOOD FOR MY RESPIRATORY SYSTEM... ANTIFREEZE IS A POISON. I'VE HAD SOME PROBLEMS WITH MY LUNGS BEFORE AND IF IT GETS WORSE AFTER THIS PROBLEM, MITSUBISHI WILL LOOK AT A HUGE LAWSUIT. *NM

NHTSA ODI #10135134

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.

00V132000 · Parking Brake:driveline:hydraulic

May 8, 2000

VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE HEAD OF THE SCREW THAT HOLDS THE RETAINING CLIP FOR THE PARKING BRAKE SHOE CAN BECOME BRITTLE AND BREAK OFF.

Consequence & remedy

Consequence: IF THE SCREW HEAD BREAKS OFF, THE PARKING BRAKE SHOE RETAINER CLIP CAN BECOME DISLODGED AND COULD RESULT IN THE PARKING BRAKE DRAGGING AND/OR FAILURE OF THE PARKING BRAKE TO PROPERLY HOLD. SEIZURE OF THE PARKING BRAKE SHOE, ESPECIALLY ON WET OR SNOW COVERED ROADS, COULD RESULT IN LOCKUP OF ONE OF THE REAR WHEELS.

Remedy: DEALERS WILL REPLACE THE RETAINING CLIP SCREW AND IN THE PROCESS INSPECT THE REAR BRAKE SYSTEM OF ANY POSSIBLE RELATED DAMAGE. ANY RELATED DAMAGE THAT MAY BE FOUND WILL ALSO BE REPAIRED.

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.