2001 Mitsubishi Diamante Problems
Used MITSUBISHI DIAMANTE shoppers should review this model-year complaint and recall record before making an offer. Based on 79 real NHTSA owner complaints, with Visibility the most reported area.
Before you buy
This 2001 Mitsubishi Diamante has 79 NHTSA complaints — top issue: Visibility.
A model-year pattern isn't the car in front of you. Check this exact VIN for accidents, open recalls, odometer rollback, and salvage titles.
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2001 Mitsubishi Diamante Fuel Economy
✓ EPA Official DataEPA official fuel economy rating for the 2001 Mitsubishi Diamante.
Source: EPA FuelEconomy.gov. Figures reflect EPA lab testing; real-world results vary by driving style, load, and conditions.
Based on NHTSA complaint data, the 2001 Mitsubishi Diamante has 79 owner complaints, 0 crash-related complaints, and 2 recall campaigns on record. The most frequently reported component is Visibility. NHTSA reliability signal: Minor Issues.
- Make
- Mitsubishi
- Model
- Diamante
- Model year
- 2001
- NHTSA owner complaints
- 79
- Crash-related complaints
- 0
- Safety recall campaigns
- 2
- Top reported component
- Visibility
- Reliability signal
- Minor Issues
- EPA MPG combined
- 18
- EPA MPG city / highway
- 16 / 23
- Fuel type
- Premium Gasoline
Common problems
Most common 2001 Mitsubishi Diamante problems
Top owner-reported complaint areas and where they often appear.
Visibility
Engine Problems
Transmission / Drivetrain
Complaint patterns center on Visibility, Engine Problems, Transmission / Drivetrain. Use these as a pre-purchase inspection guide, then verify recall and damage history on the specific VIN.
Buyer verdict
Should you buy a used 2001 Mitsubishi Diamante?
This MITSUBISHI DIAMANTE year shows a meaningful number of reported issues, so buyers should only proceed after a careful records review and inspection.
Model-year complaint trends can reveal recurring trouble spots before you spend money on inspections, financing, or repairs.
May Suit
This year may suit buyers who prioritize complete maintenance records and pass a pre-purchase inspection.
May Want to Avoid
Buyers who want a lower-risk ownership profile may prefer comparing nearby model years before committing.
Pre-purchase
What to check before buying a used 2001 Mitsubishi Diamante
Inspection Focus
- Inspect the most frequently reported complaint components on this model year
- Confirm recall repairs were completed and documented
- Check for accident damage, title brands, and mileage inconsistencies on the exact VIN
Before You Close the Deal
- Run a VIN check on the specific vehicle you are considering
- Verify all open recalls are completed at nhtsa.gov/recalls
- Request service records for the most-reported complaint components
- Have a certified mechanic inspect the vehicle before purchase
Check the exact car
Shortlist with model-year data. Decide with the exact VIN.
Before buying a used 2001 Mitsubishi Diamante, run a VIN history report to verify accidents, title brands, odometer records, theft checks, and open recalls for the exact vehicle.
AI verdict
What the complaint data suggests
Editorial interpretation of NHTSA public complaint data. Source: nhtsa.gov. Complaints are owner-submitted and do not confirm a defect. Methodology
The MITSUBISHI DIAMANTE has 79 NHTSA complaints and 2 recalls on record. This data reflects owner-reported issues submitted to the National Highway Traffic Safety Administration.
Recall context: 2 recall campaigns are on record, so recall completion status should be confirmed on the exact VIN before purchase.
- 79 total complaints filed with NHTSA
- 2 federal recall campaigns
- No crash-related complaints on record
- Review NHTSA complaint history for the most-reported components
- Check recall completion status at nhtsa.gov/recalls
- Verify service records for frequently complained components
Full breakdown
All 2001 Mitsubishi Diamante complaints by category
Every owner-reported complaint category filed with NHTSA for the 2001 Mitsubishi Diamante. Use this as a pre-purchase inspection checklist.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Visibility | 56 | — | — | — | |
| Engine Problems | 14 | — | — | — | |
| Transmission / Drivetrain | 4 | — | — | — | |
| Tire Issues | 4 | — | — | — | |
| Brake System | 4 | — | — | — | |
| Hydraulic | 4 | — | — | — | |
| Suspension Failures | 3 | — | — | — | |
| Equipment | 2 | — | — | — | |
| Wheel Issues | 1 | — | — | — | |
| Traction Control System | 1 | — | — | — | |
| Seat Belt Issues | 1 | — | — | — | |
| Structural Problems | 1 | — | — | — | |
| Unintended Acceleration | 1 | — | — | — |
Source: NHTSA Complaints Database. Complaint counts may exceed total complaints because one report can span multiple categories.
In their words
Real owner complaints
Read what owners actually reported to NHTSA for the 2001 Mitsubishi Diamante. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
I HAVE A 2001 MITSUBISHI DIAMANTE, AND AM HAVING PROBLEMS THAT SEEM TO RUN RAMPANT AMONG THIS MODEL/MAKE. MY HEATER CORE WENT OUT AT ABOUT 100K MILES; MY ABS LIGHT STAYS ON (DUE TO A SPEED SENSOR FAIL), WHICH RENDERS THE WHOLE ANTI-LOCK SYSTEM USELESS; AND NOW MY ANTENNA MAST IS …
WINDOWS ARE FOGGING UP DO T A FAULTY HEATER CORE. I REALLY DON'T MIND REPAIRING THE CAR SEEING THAT IT HAS 120K ON IT.. I PURCHASED THE CAR BRAND NEW AND THIS WILL BE THE 3RD HEATER CORE!!! WHAT'S GOING ON! *TR
MITSUBISHI DIAMANTE INFAMOUS HEATER CORE PROBLEM ANTIFREEZE LEAKS INTO INTERIOR OF CAR. HORRIBLE SICKENING ANTI FREEZE SMELL, HAPPENS ON AN ABUNDANCE OF MITSUBISHI CARS. *TR
HEATER CORE IS CAUSING THE WINDOWS TO FOG UP, THE CAR TO SMELL LIKE ANTIFREEZE AND MAY BE DAMAGING THE ECU. THERE ARE HUNDREDS OF POSTS ONLINE ABOUT PEOPLE HAVING THIS PROBLEM OVER AND OVER WITH THIS CAR. IT IS CLEARLY A MANUFACTURERS DEFECT AND CUSTOMERS ARE LEFT PAYING THOUSA…
2001 MITSUBISHI DIAMANTE. WE HAVE HAD IT ABOUT SIX MONTHS. I HAVE HAD IT IN TO A VERY REPUTABLE SERVICE STATION AND HAVE COME UP EMPTY ON THE FOLLOWING PROBLEM. THE CAR HAS NEW TIRES, THIS OCCURRED BEFORE AND AFTER THEY WERE INSTALLED. DURING MORE AGGRESSIVE TURNING THE CAR …
HEATER CORE WENT BAD AT 105,000 MILES. THIS SEEMS TO BE A MANUFACTORING PROBLEM AND MITSUBIHI SHOULD ADRESS THE ISSUE. *TR
MY 2001 MITSUBISHI DIAMANTE'S HEATER CORE WENT UP. I HAVE MASSIVE AMOUNTS OF COOLANT LEAKING ON MY PASSENGER SIDE, THICK SMOKE COMING FROM MY VENTS AND A BAD ODOR COMING FROM THE VENTS. I HAVE READ THIS IS A VERY VERY COMMON THING WITH MITSUBISHI'S ESPECIALLY DIAMANTE'S. *TR
JUST RECENTLY STARTED HAVING REALLY FOGGY WINDOWS AND STARTED TO NOTICE SWEET SMELL COMING FROM CAR WHEN HEATER/DEFROST WAS TURNED ON. NOTIFIED DEALER OF PROBLEM AND DEALER QUICKLY IDENTIFIED PROBLEM AS HEATER CORE DEFECT. *TR
TL*THE CONTACT OWNS A 2001 MITSUBISHI DIAMANTE. THE WINDOWS FOGGED UP WHEN THE AIR AND HEAT WERE ACTIVATED. THE PASSENGERS COULD SMELL ANTIFREEZE. THE DEALER STATED THAT THE HEATER CORE FAILED DUE TO DEFECTIVE O-RINGS AND NOTICED ANTIFREEZE LEAKING ONTO THE MICRO PROCESSOR. T…
TL*THE CONTACT OWNS A 2001 MITSUBISHI DIAMANTE. THE WINDOWS FOGGED UP WHEN THE AIR AND HEAT WERE ACTIVATED. THE PASSENGERS COULD SMELL ANTIFREEZE. THE DEALER STATED THAT THE HEATER CORE FAILED DUE TO DEFECTIVE O-RINGS. THE HEATER CORE WAS REPLACED. THE CURRENT AND FAILURE MI…
MY CAR IS MAKING ME SICK!! I NOTICED A SMELL OF ANTI-FREEZE COMING OUT OF THE CLIMATE CONTROL VENTS. UPON FURTHER INVESTIGATION, I NOTICED ANTI-FREEZE/ENGINE COOLANT LEAKING FROM THE HEATER CORE DOWN ONTO FLOOR MATS, CLIMATE CONTROL INTAKE, ELECTRICAL WIRING INSIDE DASHBOARD, AN…
2001 MITSUBISHI DIAMANTE - HAVE ANTIFREEZE ODOR COMING FROM AC VENTS. AFTER MUCH RESEARCH I FIND THAT THIS IS A RECURRING PROBLEM WITH SECOND GENERATION DIAMANTES (1997-2004) WITH THE 2001 YEAR MODEL BEING THE MOST EFFECTED. THE ODORS HAVE EVEN CAUSED RESPIRATORY PROBLEMS. I MYSE…
I AM FEELING A CONSTANT VIBRATION ON THE FRONT END OF CAR, AND I JUST REPLACED THE FRONT TIRES. I CHECKED TO SEE IF THE WEIGHTS ARE STILL ON THE RIM AND THEY ARE. ALL OF A SUDDEN I STARTED TO HEAR A VERY LOUD NOISE AND WHEN I PUSHED THE GAS PEDAL THE VIBRATION WOULD GET WORSE. *…
SINCE I BOUGHT THE USED CAR IN 2003 I FOUND THE CAR SMELLED SWEET, ANTIFREEZE COOLANT INSIDE, BUT I THOUGHT IT WAS NORMAL FOR THE CAR. *AK BUT IN FEB, THE BURNING ODOR BECAME STRONGER ESPECIALLY WHEN I TURN ON THE HEATER. NOW, THE FRONT INTERIOR WINDOWS BECOME FOGS UP RIGH…
I HAVE A 2001 MITSUBISHI DIAMANTE LS WITH 66,000 MILE AND MY HEATER CORE WENT OUT. I NOTICED MY WINDOW WOULD FOG UP AND YOU CAN SMELL ANTIFREEZE IN THE CAR, TO HAVE THIS REPLACED IS GOING TO COST ME ALMOST $998.00 FOR PART AND LABOR. MOST MECHANICS I HAVE TALKED TO ABOUT THIS PRO…
FOR NO PARTICULAR REASON MY CAR FILLS UP WITH THE SMELL OF ANTI-FREEZE COOLANT WHEN I TURN ON THE HEATER. I HAVE READ THAT THIS IS CAUSED BY LEAKING 0-RINGS AND THAT THIS WILL DAMAGE THE COMPUTERS WHICH ARE UNDERNEATH THE LEAK. THE CAR IS A 2001 MITSUBISHI DIAMANTE L.S. THE DEAL…
MY WINDSHIELD WAS FOGGING UP CREATING A SAFETY HAZARD. I HAD TO REPLACE THE HEATER CORE. COST WAS APPROXIMATELY $500. *TR
WHEN USING THE DEFROSTER THE WINDOWS INCREASINGLY FOG UP AND IT DOES NOT CLEAR. FROM INVESTIGATING I HAVE COME TO FIND OUT THAT THIS ISSUE APPEARS TO BE CAUSED BY A DOCUMENTED PROBLEM WITH THE HEATER CORE OF THIS MODEL OF OF VEHICLE, 2001 MITSUBISHI DIAMANTE, IN THIS CASE. I …
SEAT BELT ON DRIVERS SIDE OF OF 2001 MITSUBISHI, DIAMANTE HAS RETRACTED BACK INTO THE SIDE COLUMN RETRACTOR MECHENISM AND WILL NOT RELEASE BACK OUT. TOOK VEHICLE TO A LOCAL SERVICE REPAIR SHOP AND THEY DID NOT HAVE AN ANSWER. THE RETRACTOR IS A SEALED UNIT FROM THE MFG. AND CAN…
DEFROSTER WOULD NOT DEFROST THE WINDOWS. THE TRANSMISSION KEEPS GOING IN AND OUT OF GEAR. WAS TOLD THE HEATER CORE HAS GONE BAD, WHICH THE TRANSMISSION WAS GOING IN AND OUT BECAUSE COOLANT WAS DRIPPING ON THE RELAY THAT WAS UNDERNEATH IT. IT IS GOING TO COST $500 DOLLARS FOR THE…
Source: NHTSA Complaints Database. Real owner reports for the 2001 Mitsubishi Diamante.
Safety recalls
2001 Mitsubishi Diamante recalls
2 campaignsNHTSA recall campaigns for the 2001 Mitsubishi Diamante. 2 recall campaigns are on record, so recall completion status should be confirmed on the exact VIN before purchase. Recalls are free to fix at authorized dealers, but completion status must be verified on the exact VIN.
EQUIPMENT:OTHER:LABELS
EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
Research more
Keep researching before you buy
Compare brands and categories, then check the exact car's history by VIN.
Questions
2001 Mitsubishi Diamante buying FAQ
Buyer-focused answers based on real NHTSA complaint and recall data for this model year.
Is the 2001 Mitsubishi Diamante reliable?▾
Minor Issues. NHTSA currently shows 79 owner complaints, 0 crash-related complaints, and 2 recall campaigns for this model year. This MITSUBISHI DIAMANTE year shows a meaningful number of reported issues, so buyers should only proceed after a careful records review and inspection. Treat this as a model-year signal, then verify the exact vehicle's condition and history before purchase.
What are the most common problems with the 2001 Mitsubishi Diamante?▾
#1: Visibility (56 complaints). #2: Engine Problems (14 complaints). #3: Transmission / Drivetrain (4 complaints)
At what mileage do problems start on the 2001 Mitsubishi Diamante?▾
Mileage data is not available or insufficient for this model year.
How safe is the 2001 Mitsubishi Diamante?▾
Complaint data is not the same as crash-test scoring, but it does highlight possible risk patterns. For the 2001 Mitsubishi Diamante, NHTSA complaints include 0 crash-related reports and 0 fire reports out of 79 total complaints. 6 injury reports are also on file. For controlled crash-test ratings, check nhtsa.gov/ratings.
Does the 2001 Mitsubishi Diamante have any recalls?▾
Yes. 2 NHTSA recall campaigns affect the 2001 Mitsubishi Diamante. A major recall area is EQUIPMENT:OTHER:LABELS. 2 recall campaigns are on record, so recall completion status should be confirmed on the exact VIN before purchase. Always verify open recalls by VIN because completion status varies by vehicle.
Should I buy a 2001 Mitsubishi Diamante?▾
This MITSUBISHI DIAMANTE year shows a meaningful number of reported issues, so buyers should only proceed after a careful records review and inspection. Model-year complaint trends can reveal recurring trouble spots before you spend money on inspections, financing, or repairs. Pay extra attention to Visibility during inspection. Before committing, run a VIN history report to verify accidents, title brands, odometer records, and recall completion for the exact car.
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinSpectorAI.
Wider context: See the full Mitsubishi Diamante reliability report with year-by-year comparison.
Owner Reliability Rating
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Ratings are based on owner experience and are separate from NHTSA data shown above.
Before you buy
Check the exact vehicle history before you buy
Model-year complaints and recalls reveal patterns. A VIN report confirms whether the exact car has accident history, title brands, mileage issues, or open recalls.