NHTSA owner reports · September 18, 2026 snapshot.
Visibility complaints
56 reportsClear category filter47,971 miles · Nov 6, 2005
VisibilityInjury
ABNORMAL SMELL COMING FROM VENTS, MADE ME, AND MY TWO SONS FEEL NAUSEOUS, CREATED A HEADACHE FOR ME. I HAD TO OPEN WINDOWS IN ORDER TO DRIVE CAR DUE TO FUMES. BROUGHT CAR TO DEALER, AND HEATER CORE WAS IDENTIFIED AS PROBLEM AND NEEDED TO BE REPLACED. DEALER SAID THIS IS A VERY COMMON PROBLEM WITH THIS YEAR AND MODEL. I ASKED IF …
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ABNORMAL SMELL COMING FROM VENTS, MADE ME, AND MY TWO SONS FEEL NAUSEOUS, CREATED A HEADACHE FOR ME. I HAD TO OPEN WINDOWS IN ORDER TO DRIVE CAR DUE TO FUMES. BROUGHT CAR TO DEALER, AND HEATER CORE WAS IDENTIFIED AS PROBLEM AND NEEDED TO BE REPLACED. DEALER SAID THIS IS A VERY COMMON PROBLEM WITH THIS YEAR AND MODEL. I ASKED IF THERE WAS A MANUFACTURER RECALL AND HE SAID NO, THEY ONLY HAD TO DO A RECALL IF IT WAS A SAFETY PROBLEM. THIS COST $802.37 TO REPAIR. THIS IS MOST DEFINITELY A SAFETY ISSUE. NOT ONLY HEALTH, BUT CAN CAUSE AN ACCIDENT DUE TO FOGGING OF WINDOWS, ETC. I AM SURE MITSUBISHI KNOWS OF THIS PROBLEM. SEEMS AS THOUGH A CLASS ACTION SUIT SHOULD BE FILED AGAINST THEM FOR THIS ISSUE. MY CAR ONLY HAS 47K MILES, I PURCHASED NEW AND IT HAS HAD ALL REGULAR MAINTENANCE REQUIRED. THIS IS OBVIOUSLY A MANUFACTURERS DEFECT. I WILL NEVER PURCHASE ANOTHER MITSUBISHI, JUST BECAUSE THEY DO NOT TAKE RESPONSIBILITY. *NM
NHTSA ODI #10141862
30,162 miles · Oct 30, 2005
Visibility
NOTICED SMELL OF ANTIFREEZE IN THE PASSENGER COMPARTMENT. FRONT WINDSHIELD FOGS UP AFTER CAR IS DRIVEN AND THE MOTOR IS TURNED OFF. WIPING OFF THE MOISTURE IS THE ONLY WAY TO REMOVE IT. READ ABOUT THE HEATER CORE PROBLEMS ON THE WEB AND TOOK THE CAR IN TO BE REPAIRED FOR THIS SPECIFIC PROBLEM. CORE SEALS WERE REPLACED OCT 20…
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NOTICED SMELL OF ANTIFREEZE IN THE PASSENGER COMPARTMENT. FRONT WINDSHIELD FOGS UP AFTER CAR IS DRIVEN AND THE MOTOR IS TURNED OFF. WIPING OFF THE MOISTURE IS THE ONLY WAY TO REMOVE IT. READ ABOUT THE HEATER CORE PROBLEMS ON THE WEB AND TOOK THE CAR IN TO BE REPAIRED FOR THIS SPECIFIC PROBLEM. CORE SEALS WERE REPLACED OCT 2003, THE FIRST REPAIR, BUT SMELL OF COOLANT REMAINED. TWO ADDITIONAL ATTEMPTS AT REPAIR WERE MADE, INCLUDING "CLEANING" OF THE CORE, BUT SMELL REMAINS TO THIS DAY. *NM
NHTSA ODI #10141241
72,000 miles · Oct 23, 2005
Visibility
VEHICLE IS 2001 DIAMANTE LS WITH 72,000 VIN # [XXX]. DEFROSTER NOT WORKING PROPERLY WINDOW FOG SMELL OF ANTIFREEZE AND PUDDLE OF ANTIFREEZE UNDER PASSENGER RUG. HAVE ESTIMATE OF $800 TO FIX. *NM UPDATED 07/18/2012 *JS INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA ODI #10140531
42,853 miles · Oct 20, 2005
Visibility
I HAVE A 2001 MITSUBISHI DIAMANTE LS THAT REQUIRES I REPLACE THE HEATER CORE, THIS HAS BEEN A PROBLEM SINCE I PURCHASED THIS VEHICLE. I ALSO OWNED A 1998 DIAMANTE LS WITH THE SAME PROBLEM. *JB
NHTSA ODI #10140320
72,000 miles · Oct 3, 2005
Visibility
CAR SMELLED OF SYRUP WHEN THE HEAT WAS ON AND SMOKE CAME FROM THE VENTS. AFTER BREAKING DOWN, I WAS TOLD BY THE DEALERSHIP THAT THE O RINGS/HEATER CORE NEEDED TO BE REPLACED WHICH COST ME $850.00.. *JB
NHTSA ODI #10138419
52,000 miles · Aug 30, 2005
Visibility
COOLANT FROM FAILED O-RINGS IN HEATER CORE CAUSED WINDOWS TO FOG OVER WHILE DRIVING. *NM
NHTSA ODI #10134765
28,000 miles · Aug 5, 2005
Visibility
IN EARLY 2005, I STARTED NOTICING THAT MY WINDOWS WERE FOGGING FOR NO REASON WHILE DRIVING AND IT WAS HARD TO DEFROST THEM. A DEFINITE SAFETY HAZARD, BECAUSE I COULD NOT SEE THAT WELL. LATER, I STARTED NOTICING A WEIRD SMELL IN THE CABIN. (IT TURNED OUT TO BE COOLANT; IT CAN'T BE GOOD FOR YOUR HEALTH) IN MID 2005, I SAW FOG/SMO…
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IN EARLY 2005, I STARTED NOTICING THAT MY WINDOWS WERE FOGGING FOR NO REASON WHILE DRIVING AND IT WAS HARD TO DEFROST THEM. A DEFINITE SAFETY HAZARD, BECAUSE I COULD NOT SEE THAT WELL. LATER, I STARTED NOTICING A WEIRD SMELL IN THE CABIN. (IT TURNED OUT TO BE COOLANT; IT CAN'T BE GOOD FOR YOUR HEALTH) IN MID 2005, I SAW FOG/SMOKE COMING FROM THE VENTS. A REPAIR SHOP CONFIRMED THAT IT WAS A PROBLEM WITH THE HEATER CORE, AND IT WOULD BE AT LEAST $800 TO FIX. THE DEALER TOLD ME THAT MY CAR IS OUT OF WARRANTY. I PURCHASED THE VEHICLE IN DECEMBER 2001, AND IT NOW HAS ONLY 30600 MILES. *NM
NHTSA ODI #10131731
36,000 miles · Jul 26, 2005
Visibility
LOW MILEAGE 2001 MITSUBISHI DIAMANTE HAS A FAILED HEATER CORE. RESULTS IN EXCESS ETHELYNE GLYCOL VAPOR IN THE PASSENGER COMPARTMENT AND FOGGED WINDOWS. SEARCH OF THE WEB SHOWS PROBLEM TO BE COMMON.
NHTSA ODI #10130123
26,000 miles · Jun 28, 2005
Visibility
DT: CONSUMER OWNS A MITSUBISHI 2001 VEHICLE WITH LESS THAN 26,000 MILES THE HEATER CORE IS NOT WORKING. WE NOTICED SOME TYPE OF A FOG IN THE WINDOW. WE STARTED GETTING SMOKE IN THE CAR, AND THE FRONT GLASS FOGS UP AND DOESN'T CLEAR UP. ALSO, IT HAS A STRONG SMELL OF ANTIFREEZE. WE HAVE TO KEEP PUTTING ANTIFREEZE IN THE CAR.*A…
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DT: CONSUMER OWNS A MITSUBISHI 2001 VEHICLE WITH LESS THAN 26,000 MILES THE HEATER CORE IS NOT WORKING. WE NOTICED SOME TYPE OF A FOG IN THE WINDOW. WE STARTED GETTING SMOKE IN THE CAR, AND THE FRONT GLASS FOGS UP AND DOESN'T CLEAR UP. ALSO, IT HAS A STRONG SMELL OF ANTIFREEZE. WE HAVE TO KEEP PUTTING ANTIFREEZE IN THE CAR.*AK *SB *NM
NHTSA ODI #10123921
Mileage unknown · May 25, 2005
Engine And Engine CoolingVisibility
2001 MITSUBISHI DIAMANTE EXPERIENCED PROBLEMS WITH THE HEATER CORE.*MR THE HEATER CORE HAD TO BE REPLACED BECAUSE ANTI-FREEZE WAS LEAKING INTO THE PASSENGER COMPARTMENT AND FOGGING THE WINDSHIELD. WHEN THE HEATER CORE WAS BEING REMOVED, THE CONSUMER NOTICED IT FAILED TO HAVE SUFFICIENT INSULATION. THE OIL PAN GASKET WAS LEA…
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2001 MITSUBISHI DIAMANTE EXPERIENCED PROBLEMS WITH THE HEATER CORE.*MR THE HEATER CORE HAD TO BE REPLACED BECAUSE ANTI-FREEZE WAS LEAKING INTO THE PASSENGER COMPARTMENT AND FOGGING THE WINDSHIELD. WHEN THE HEATER CORE WAS BEING REMOVED, THE CONSUMER NOTICED IT FAILED TO HAVE SUFFICIENT INSULATION. THE OIL PAN GASKET WAS LEAKING AND THE UPSTREAM OXYGEN SENSOR WAS REPLACED. *JB
NHTSA ODI #10124693
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