IllustrationVEHICLE EXPERIENCED PROBLEMS WITH THE DEFROSTER. IT WILL NOT CLEAR THE WINDOWS. ALSO, THERE WAS A MIST COMING OUT OF THE VENT. CONSUMER HAS AN APPOINTMENT WITH THE DEALER ON THURSDAY 27 JANUARY, 2005. *AK
2001 Mitsubishi Diamante
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2001 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
20–25K
1925–50K
2150–75K
1175–100K
4100–150K
0150K+
57 reports with mileage · 21 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 56 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 14 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports3 injury reports
What owners actually said
78 reportsMY DIAMANTE HAS ABOUT 42,000 MILES ON IT, AND I HAVE JUST BEEN NOTICING THAT THE FRONT AND SIDE WINDOWS FOG UP AND THE DEFROST DOES NOT CORRECT THE PROBLEM. I LIVE IN COLORADO, WHERE IT CAN BE VERY COLD IN THE WINTER MONTHS AND THIS IS A SERIOUS SAFETY ISSUE! I HAVE ALSO NOTICED THAT A SMOKE OR VAPOR COMES OUT OF THE VENTS AND…
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MY DIAMANTE HAS ABOUT 42,000 MILES ON IT, AND I HAVE JUST BEEN NOTICING THAT THE FRONT AND SIDE WINDOWS FOG UP AND THE DEFROST DOES NOT CORRECT THE PROBLEM. I LIVE IN COLORADO, WHERE IT CAN BE VERY COLD IN THE WINTER MONTHS AND THIS IS A SERIOUS SAFETY ISSUE! I HAVE ALSO NOTICED THAT A SMOKE OR VAPOR COMES OUT OF THE VENTS AND SMELLS BAD. THIS TOO IS A HEALTH CONCERN OF MINE. I HAVE A LITTLE THREE YEAR OLD BOY THAT HAS RESPITORY PROBLEMS SO I AM VERY CONCERED ABOUT TAKING HIM IN THE CAR. I KNOW THIS IS A BIG PROBLEM, BECAUSE I SEE MANY PEOPLE COMPLAINING ABOUT IT ON THE WEB, BUT THEY ARE PROBABLY UNAWARE OF THE NHTSA. I FEEL THAT MITSUBISHI SHOULD STAND BEHIND THIS. *AK
SMELLED ANITFREEZE IN THE CAR, SUBSEQUENTLY FOUND CARPET SOAKED WITH ANTIFREEZE CALLED DEALERSHIP IN ARLINGTON AND WAS TOLD THAT THEY HAVE HAD SEVERAL PROBLEMS WITH THE HEATER CORE. ESTIMATED COST TO REPAIR $930. CAR IS OUT OF FACTORY WARRANTY BUT HAS EXTENDED WARRANTY W/ $500 DEDUCTIBLE. WAS TOLD TO CALL WARRANTY PEOPLE AND …
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SMELLED ANITFREEZE IN THE CAR, SUBSEQUENTLY FOUND CARPET SOAKED WITH ANTIFREEZE CALLED DEALERSHIP IN ARLINGTON AND WAS TOLD THAT THEY HAVE HAD SEVERAL PROBLEMS WITH THE HEATER CORE. ESTIMATED COST TO REPAIR $930. CAR IS OUT OF FACTORY WARRANTY BUT HAS EXTENDED WARRANTY W/ $500 DEDUCTIBLE. WAS TOLD TO CALL WARRANTY PEOPLE AND TELL THEM WAS "CRACKED" AND THAT IT WOULD BE COVERED. MILEAGE IS ONLY 47,000. *AK
STRONG SMELL OF ANTIFREEZE CAUSING NAUSEA AND LOSS OF VISIBILITY WHILE DRIVING DUE TO HEAVY FOGGING OF ALL WINDOWS. IN REVIEW ONLINE FOR OTHER DOCUMENTED CASES THE HEATER CORE AND CORE ASSEMBLY O RINGS ARE SUBJECT TO PREMATURE FAILURE, SEEMS TO BE VERY PREVALENT IN 2001 AND NEWER MITSUBISHI DIAMANTE MODELS.MY DIAMANTE HAS 48,00…
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STRONG SMELL OF ANTIFREEZE CAUSING NAUSEA AND LOSS OF VISIBILITY WHILE DRIVING DUE TO HEAVY FOGGING OF ALL WINDOWS. IN REVIEW ONLINE FOR OTHER DOCUMENTED CASES THE HEATER CORE AND CORE ASSEMBLY O RINGS ARE SUBJECT TO PREMATURE FAILURE, SEEMS TO BE VERY PREVALENT IN 2001 AND NEWER MITSUBISHI DIAMANTE MODELS.MY DIAMANTE HAS 48,000 MILES. *JB
2001 MITSUBISHI DIAMANTE. BACK IN NOVEMBER, CAR BEGAN TO SMELL OF ANTIFREEZE/COOLANT, WINDOWS BEGAN TO FOG AND FUMES EMERGED FROM THE VENTS. THE VEHICLE TEMPERATURE GAUGE BEGAN TO RUN HOT. THE FUMES CAUSE NAUSEA. I TOOK CAR TO DEALERSHIP AND THEY REPLACED THE THERMOSTAT AND CHECKED FOR LEAKS. NOW, THREE MONTHS LATER THE EXA…
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2001 MITSUBISHI DIAMANTE. BACK IN NOVEMBER, CAR BEGAN TO SMELL OF ANTIFREEZE/COOLANT, WINDOWS BEGAN TO FOG AND FUMES EMERGED FROM THE VENTS. THE VEHICLE TEMPERATURE GAUGE BEGAN TO RUN HOT. THE FUMES CAUSE NAUSEA. I TOOK CAR TO DEALERSHIP AND THEY REPLACED THE THERMOSTAT AND CHECKED FOR LEAKS. NOW, THREE MONTHS LATER THE EXACT SAME PROBLEM. HEATER CORE PROBLEM AT A COST OF $1300 TO FIX. *NM
FOGGED UP WINDOWS ALONG WITH BAD MUSTY SMELL. EXTREMELY DIFFICULT TO DRIVE WHEN YOU CAN'T SEE OUT THE WINDOW. 65,000 MILES SEEMS LOW FOR A HEATER CORE TO GO OUT. THE DEALER SHOULD PAY TO FIX THE PROBLEM OR GIVE A GREAT VALUE ON A TRADE IN.*AK I AM VERY DISSAPOINTED. MY RESEARCH SHOWS THAT THE HEATER CORE IS A VERY COMMON P…
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FOGGED UP WINDOWS ALONG WITH BAD MUSTY SMELL. EXTREMELY DIFFICULT TO DRIVE WHEN YOU CAN'T SEE OUT THE WINDOW. 65,000 MILES SEEMS LOW FOR A HEATER CORE TO GO OUT. THE DEALER SHOULD PAY TO FIX THE PROBLEM OR GIVE A GREAT VALUE ON A TRADE IN.*AK I AM VERY DISSAPOINTED. MY RESEARCH SHOWS THAT THE HEATER CORE IS A VERY COMMON PROBLEM AND THERE SHOULD BE A RECALL OR SOME SORT OF ACTION!!!
I PURCHASED A USED MITSUBISHI DIAMANTE IN OCTOBER 2003 WITH 52,000 MILES ON IT. A COUPLE OF MONTHS LATER THERE WAS A STRONG ODOR COMING FROM THE VENTS AND THE WINDOW STARTED FOGGING UP. THE TRANSMISSION STARTED ACTING STRANGE SO I TOOK IT BACK TO THE DEALER AND WAS TOLD THAT THE HEATER CORE WAS LEAKING AND HAD LEAKED ON THE TR…
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I PURCHASED A USED MITSUBISHI DIAMANTE IN OCTOBER 2003 WITH 52,000 MILES ON IT. A COUPLE OF MONTHS LATER THERE WAS A STRONG ODOR COMING FROM THE VENTS AND THE WINDOW STARTED FOGGING UP. THE TRANSMISSION STARTED ACTING STRANGE SO I TOOK IT BACK TO THE DEALER AND WAS TOLD THAT THE HEATER CORE WAS LEAKING AND HAD LEAKED ON THE TRANSMISSIONS COMPUTER. THEY TOLD ME THEY COULD REPLACE THE TRANSMISSION COMPUTER UNDER WARRANTY BUT THE HEATER CORE WAS NOT COVERED AND IT WOULD COST ME ABOUT $668. I HAD TO COME UP WITH THE MONEY TO GET THE HEATER CORE FIXED BEFORE THE COULD FIX THE TRANSMISSION PROBLEM. I ALSO NOTICED SMOKE COMING OUT OF THE VENTS EARLY IN THE MORNING AND THE PASSENGER SIDE MATS WERE ALSO SOAKED WITH ANTIFREEZE.*AK
BOTH REAR KNUCKLE BUSHING WERE SHOT ON 2001 MITSUBISHI DIAMANTE. *BF IT APPEARED THAT THE BODY OF THE VEHICLE WAS FALLING OFF OF THE FRAME. *SC
HEATER CORE FAILURE/LEAK IN 2001 MITSUBISHI DIAMANTE LS; LEAKED ON CARPET; CONTINUOUS ODOR. DEALER MCGINNIS MITSUBISHI SAID IT WOULD COST OVER $1000 IN LABOR COSTS TO REPLACE.*AK
THE DEFROSTER NO LONGER WORKS ON THIS VEHICLE. INSTEAD A STREAM OF 'FOG' IS EMITTED THROUGH THE DUCTS AND THE WINDOWS ARE CLOUDED OVER. THIS REQUIRED ME TO STOP DRIVING BECAUSE I COULD NOT SEE THROUGH THE WINDOW. THERE IS A DEFINITE SMELL OF COOLANT IN THE PASSENGER VEHICLE AND IT IS DIFFICULT TO BREATHE. *JB
Official recalls
204V428000 · 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.
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.