DT: CONSUMER HAS 2000 MITSUBISHI DIAMANTE WHOSE GAS TANK LEAKS CONSUMER TOOK VEHICLE TO DEALER, AND DEALER FOUND GAS LEAKAGE, BUT COULD NOT FIND ANY HOLE IN THE GAS TANK. *AK
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.
About this comparison →How this year compares
Owner complaints by model year
Compare all Diamante years →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.
What owners actually said
51 reportsTHE FUMES OF ANTIFREEZE FOGGED UP THE WINDOWS SEVERELY, REDUCING VISIBILITY OF THE DRIVER. IT WAS RAINING ONE NIGHT AND MY WINDOWS ALL OF A SUDDEN GOT FOGGY. I TURNED ON THE DEFROSTER, WHICH MADE MY WINDOWS EVEN FOGGIER. THE POOR VISIBILITY CAUSED ME TO RUN OFF THE ROAD INTO THE GRASSY MEDIAN. I WAS OUT OF TOWN WHEN THIS OCCU…
Read full complaint
THE FUMES OF ANTIFREEZE FOGGED UP THE WINDOWS SEVERELY, REDUCING VISIBILITY OF THE DRIVER. IT WAS RAINING ONE NIGHT AND MY WINDOWS ALL OF A SUDDEN GOT FOGGY. I TURNED ON THE DEFROSTER, WHICH MADE MY WINDOWS EVEN FOGGIER. THE POOR VISIBILITY CAUSED ME TO RUN OFF THE ROAD INTO THE GRASSY MEDIAN. I WAS OUT OF TOWN WHEN THIS OCCURRED. IN DOING RESEARCH ON THIS PROBLEM I FOUND THAT IT WAS COMMON ALL DIAMANTES (92 -2001). IN MANY CASES, THE DRIVER IS NOT AWARE THAT THIS IS A SEVERE PROBLEM. THE ANTIFREEZE WILL STARTED LEAKING ON THE PASSENGER?S SIDE AREA. CAUSING MORE STRONG SMELL OF TOXIC ANTIFREEZE. I BELIEVE THIS TO BE A SAFETY ISSUE. *AK
WE HAVE A FIVE-YEAR-OLD MITSUBISHI DIAMANTE. FOR THE LAST WEEK, MY HUSBAND, SCOTT HAS SMELLED A SWEET SMELL IN HIS CAR AND HAD A PROBLEM WITH THE WINDOWS FOGGING. TUESDAY MORNING HE STARTED LOSING FORWARD POWER WHEN DRIVING TO WORK ON I480. HE NOTICED THAT HIS DASHBOARD TRANSMISSION LIGHTS WERE ACTING FUNNY SO HE CALLED OUR M…
Read full complaint
WE HAVE A FIVE-YEAR-OLD MITSUBISHI DIAMANTE. FOR THE LAST WEEK, MY HUSBAND, SCOTT HAS SMELLED A SWEET SMELL IN HIS CAR AND HAD A PROBLEM WITH THE WINDOWS FOGGING. TUESDAY MORNING HE STARTED LOSING FORWARD POWER WHEN DRIVING TO WORK ON I480. HE NOTICED THAT HIS DASHBOARD TRANSMISSION LIGHTS WERE ACTING FUNNY SO HE CALLED OUR MITSUBISHI DEALER. THE SERVICE PEOPLE ASKED IF HE HAD NOTICED THAT THE WINDOWS WERE FOGGING OR IF HE SMELLED ANY ANTI-FREEZE COMING FROM THE HEATER. SCOTT WAS ASTONISHED THAT THE SWEET SMELL WAS ANTIFREEZE. THE SERVICE ADVISOR SAID THAT MOST LIKELY IT'S BECAUSE THAT DIAMANTE HAS EXPERIENCED HEATER CORES LEAKING INTO THE PASSENGER COMPARTMENT AND DRIPPING ONTO THE TRANSMISSION COMPUTER. THIS IS WHY HE WAS LOSING POWER WHILE DRIVING ON I480. ONE OF MY CONCERNS IS WHAT HEALTH PROBLEMS CAN COME FROM DRIVING IN AN ENCLOSED ENVIRONMENT WHILE THE HEATING SYSTEM IS MIXING ANTIFREEZE FLUID IN THE AIR THAT MY HUSBAND IS BREATHING WHILE COMMUTING TO WORK. LATER ON THAT SAME TUESDAY, THE SERVICE ADVISOR CALLED HIM AND SAID THAT THEIR SERVICE MANAGER SPOKE DIRECTLY WITH THE REGIONAL MITSUBISHI SERVICE REPRESENTATIVE AND HE SAID THAT THE HEATER CORE WAS TOO FAR OUT OF WARRANTY TO BE COVERED BASED ON 36,000 MILE WARRANTY. THE TRANSMISSION COMPUTER, WHILE COVERED UP TO 84,000 MILES, WOULD ALSO NOT BE COVERED BECAUSE THE FAILURE WAS DUE TO ANTIFREEZE DRIPPING ON THE COMPUTER CAUSING IT TO FAIL. *JB
HEATER CORE ON 2000 MITSHUBISHI DIAMANTE FAILED AND FOGGED UP MY WINDSHEILD. WHILE DRIVING HOME THE NIGHT OF THE FAILURE, A DEER JUMP IN FRONT OF MY CAR AND CAUSED 4 GRAND IN DAMAGE. I HAD TO PAY FOR THE HEATER CORE AT THE DEALERSHIP.*AK
ABOUT TWO MONTHS AFTER BUYING A 2000 DIAMANTE; IN OCT, 2004, I STARTED TO NOTICE THICK FOG ON THE WINDSHEILD THAT WOULDN'T GO AWAY BY USING THE DE-FOGGER AND WHEN USING THE HEATER, I WOULD ALSO NOTICE STRONG SMELL ON ANIT-FREEZE COMMING OUT FROM THE VENT. UPON INSPECTION, THE DEALERSHIP DESCRIBED THE PROBLEM AS FAULTY O-RING IN…
Read full complaint
ABOUT TWO MONTHS AFTER BUYING A 2000 DIAMANTE; IN OCT, 2004, I STARTED TO NOTICE THICK FOG ON THE WINDSHEILD THAT WOULDN'T GO AWAY BY USING THE DE-FOGGER AND WHEN USING THE HEATER, I WOULD ALSO NOTICE STRONG SMELL ON ANIT-FREEZE COMMING OUT FROM THE VENT. UPON INSPECTION, THE DEALERSHIP DESCRIBED THE PROBLEM AS FAULTY O-RING IN THE HEATER CORE. THE FIX WAS COSTLY, AROUND $1100.00 HOWEVER THE CAR HAS BEEN PROBLEM FREE SINCE THEN. *AK
WINDOWS FOGGING UP, HEATER NOT WORKING, ANTI-FREEZE LEAKING INTO THE PASSENGER SIDE FLOORBOARD. *AK
WINDOWS FOG CONSTANTLY AND I CAN NOT GET THEM DEFROSTED. SMOKE AND SMELL OF ANTIFREEZE COMES INTO CABIN OF CAR. TOOK TO DEALER A YEAR AGO AND WAS TOLD NOTHING WAS WRONG, CAR NOW HAS 98,000 MILES AND THEY ARE TELLING ME IT WILL COST 672.00 TO REPLACE THE HEATER CORE. I HAVE FOUND SEVERAL COMPLAINTS ABOUT THE SAME ISSUES. I BE…
Read full complaint
WINDOWS FOG CONSTANTLY AND I CAN NOT GET THEM DEFROSTED. SMOKE AND SMELL OF ANTIFREEZE COMES INTO CABIN OF CAR. TOOK TO DEALER A YEAR AGO AND WAS TOLD NOTHING WAS WRONG, CAR NOW HAS 98,000 MILES AND THEY ARE TELLING ME IT WILL COST 672.00 TO REPLACE THE HEATER CORE. I HAVE FOUND SEVERAL COMPLAINTS ABOUT THE SAME ISSUES. I BECAME ILL IN JANUARY OF THIS YEAR, THE DOCTORS (4 OF THEM AND THREE HOSPITALS, CT SCANS, ETC) COULD NOT FIGURE OUT WHAT IT WAS. TURNS OUT IT WAS BREATHING THE FUMES IN MY CAR. AT THAT TIME, THE SMOKE ONLY APPEARED A COUPLE OF TIMES, BUT NOW IT HAS INCREASED CONSIDERABLY. I THINK IT'S SAD THAT MITSUBISHI WILL NOT REPAIR THIS PROBLEM, NOR HAVE THEY CORRECTED IT.*AK
STRONG ANTIFREEZE SMELL AND VAPORS COMING THROUGH THE VENTS. ESPECIALLY WHEN THE HEATER IS TURNED ON. WINDOWS ARE FOGGING CONSTANTLY. THE CAR STARTED OVERHEATING AND HAVE TO REFILL ANTIFREEZE. SERVICE CENTER SAID ANTIFREEZE IS LEAKING AND EVAPORATING AND THEY HEARD ABOUT THIS PROBLEM BEFORE. *AK
AN ANTI FREEZE AND SMOKE ODOR WAS COMING INTO THE CABIN OF THE VEHICLE THROUGH THE AIR VENTS. DEALERSHIP INDICATED THIS WAS CAUSED BY A PROBLEM WITH THE HEATER CORE GASKET, AND NEEDED TO BE REPLACED. THE ENTIRE DASHBOARD HAS TO BE TAKEN APART TO REPLACE THE PART. THIS WAS A COMMON PROBLEM WITH THESE VEHICLES. *AK *SC
2000 DIAMANTE MALFUNCTION, ESPECIALLY IN COLD OR WET WEATHER GAS PEDAL STICKS, REQUIRES ADDITIONAL PRESSURE TO OVERCOME. *BF THE DEALER WAS UNABLE TO DUPLICATE THE PROBLEM. *SC
Official recalls
304V428000 · 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
0No exact-year investigations in this snapshot.
Illustration