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Vehicle Stats/Mitsubishi/Diamante Reliability
NHTSA Official DataUpdated Sep 2026Methodology

Mitsubishi Diamante Reliability by YearBest & worst years, problems & recalls — NHTSA data

Poor reliability signalOur verdict from 335 complaints and 11 recalls on NHTSA record

Comparing used Mitsubishi Diamante options? We analyzed 6 model years (2000–2005) using real NHTSA complaint and recall data so you can spot stronger years, avoid riskier ones, and know what to inspect before buying.

335
Total Complaints
NHTSA filed
11
Safety Recalls
federal campaigns
11
Crash-Related
crash complaints
0
Fire-Related
fire complaints
26
Injuries Reported
across all years
6
Years Analyzed
2000–2005

Free VIN check

Found a Mitsubishi Diamante? Check that exact car.

Model-year trends show patterns — they can't tell you whether this car was crashed, flooded, or rolled back. A VIN check can.

  • Accident & damage history
  • Odometer rollback records
  • Open recalls & title brands
NMVTIS official data Instant results No signup for the preview
Quick Answer

Based on NHTSA complaint data, the Mitsubishi Diamante has 335 owner complaints and 11 safety recalls across model years 2000–2005. The most reported issue area is VISIBILITY. 2002 drew the most complaints; 2004 drew the fewest.

Mitsubishi Diamante — key reliability facts
Make
Mitsubishi
Model
Diamante
Model years analyzed
2000–2005 (6 years)
Total NHTSA complaints
335
Safety recall campaigns
11
Crash-related complaints
11
Fire-related complaints
0
Worst model year (by complaints)
2002 (133 complaints)
Best model year (fewest complaints)
2004 (3 complaints)
Top reported issue area
VISIBILITY
Reliability signal
Poor
Source: NHTSA (National Highway Traffic Safety Administration) · Data last refreshed Sep 5, 2026
This Diamante has 11 open recall campaigns on record. Check whether yours is affected.Check my VIN free →

By model year

Mitsubishi Diamante: which years to avoid & which to buy

Based on total NHTSA owner complaints per model year. Higher complaint counts indicate a riskier year to buy used — lower counts suggest a cleaner reliability record.

Years to avoid
2002133 complaints200179 complaints200369 complaints

These years have the most owner complaints. Inspect carefully and always run a VIN check.

Best years to buy
20043 complaints200051 complaints200369 complaints

These years have the fewest owner complaints on record — lower risk starting points.

Looking at a 2002 Mitsubishi Diamante? It logged the most NHTSA complaints of any model year — averages won't tell you whether this exact car is affected.Check this VIN free →

Crash test ratings

NHTSA NCAP crash test ratings

New Car Assessment Program

NCAP crash tests measure how well a vehicle protects occupants in controlled frontal crash, side crash, and rollover scenarios. Stars are awarded per category (5 = safest). These laboratory results are independent of owner complaints and are performed by NHTSA engineers on new production vehicles.

How to read NCAP stars
5 stars — Excellent
4 stars — Good
3 stars — Average
2 stars — Below average
1 star — Poor

Source: nhtsa.gov/ratings

What the complaint data suggests

Poor
Editorial interpretation of NHTSA public complaint data. Source: nhtsa.gov. Complaints are owner-submitted and do not confirm a defect. Methodology

Data engine & NHTSA methodology by Eduard Batog, Co-founder & Data Engineer. How we calculate this.

The MITSUBISHI DIAMANTE has 335 NHTSA complaints and 11 recalls on record. 11 complaints involve crash-related incidents. This data reflects owner-reported issues submitted to the National Highway Traffic Safety Administration.

Key findings
  • 335 total complaints filed with NHTSA
  • 11 federal recall campaigns
  • 11 crash-related complaints on record
Top concerns
  • Review NHTSA complaint history for the most-reported components
  • Check recall completion status at nhtsa.gov/recalls
  • Verify service records for frequently complained components
Worst years

Consult the by-year breakdown to identify model years with elevated complaint rates.

Best years

Consult the by-year breakdown to identify model years with fewer reported issues.

What to check before buying used
  • 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
Data note: NHTSA complaints are consumer-submitted and do not confirm a manufacturing defect Complaint volume is influenced by sales volume — popular models naturally accumulate more complaints

Problems by model year (best vs. worst)

2000
51
2001
79
2002
133
2003
69
2004
3

Source: NHTSA public complaints database. Updated: Sep 2026

Safety recalls

NHTSA safety recalls

11 recalls found

Safety recalls are mandatory repair campaigns ordered by NHTSA when a vehicle defect poses an unreasonable risk to safety. Manufacturers are required to fix recalled vehicles free of charge. Always verify open recalls before buying a used car.

Safety recall

EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

#04V067000EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUALNovember 2, 2004
Safety recall

EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

#04V067000EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUALNovember 2, 2004
Safety recall

EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

#04V067000EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUALNovember 2, 2004
Safety recall

EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

#04V067000EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUALNovember 2, 2004
Safety recall

EQUIPMENT:OTHER:LABELS

#04V428000EQUIPMENT:OTHER:LABELSJanuary 9, 2004
Safety recall

EQUIPMENT:OTHER:LABELS

#04V428000EQUIPMENT:OTHER:LABELSJanuary 9, 2004
Safety recall

EQUIPMENT:OTHER:LABELS

#04V428000EQUIPMENT:OTHER:LABELSJanuary 9, 2004
Safety recall

EQUIPMENT:OTHER:LABELS

#04V428000EQUIPMENT:OTHER:LABELSJanuary 9, 2004
Safety recall

EQUIPMENT:OTHER:LABELS

#04V428000EQUIPMENT:OTHER:LABELSJanuary 9, 2004
Safety recall

ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOOD

#02V100001ELECTRICAL SYSTEM:WIRING:FRONT UNDERHOODJuly 4, 2002
Safety recall

PARKING BRAKE:DRIVELINE:HYDRAULIC

#00V132000PARKING BRAKE:DRIVELINE:HYDRAULICAugust 5, 2000

Source: NHTSA Recalls Database. Data covers model years 2000–2005. Always run a VIN-specific check below for the most up-to-date open recall status.

Common problems

What goes wrong most often

The vehicle systems owners complain about most, ranked from all 335 NHTSA complaints — these are the areas to inspect first on a used car.

01
VISIBILITY185 complaints
02
ENGINE AND ENGINE COOLING82 complaints
03
POWER TRAIN28 complaints
04
SERVICE BRAKES20 complaints
05
HYDRAULIC18 complaints
06
TIRES13 complaints
07
ELECTRICAL SYSTEM13 complaints
08
FUEL SYSTEM11 complaints

Owner complaints

NHTSA complaint reports

335 total

These are consumer-submitted safety complaints filed directly with NHTSA. Each complaint describes a real owner's experience. Complaints flagged as crash-related or fire-related are highlighted.

VEHICLE SPEED CONTROLApr 2010

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

VEHICLE SPEED CONTROLFeb 2010

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

ENGINE AND ENGINE COOLING,VISIBILITYSep 2008

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

2 InjuriesVISIBILITYNov 2007

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

VISIBILITYJul 2007

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

VISIBILITYFeb 2007

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

Read 14 more owner reports
VISIBILITYNov 2005

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

VISIBILITYOct 2005

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

POWER TRAIN,VISIBILITYOct 2005

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

VISIBILITYSep 2005

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

FUEL SYSTEM, GASOLINEJun 2005

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

CrashENGINE AND ENGINE COOLINGApr 2005

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

POWER TRAIN,UNKNOWN OR OTHERMar 2005

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

VISIBILITYFeb 2005

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

VISIBILITYFeb 2005

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

VISIBILITYDec 2004

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

VISIBILITYDec 2004

WINDOWS FOGGING UP, HEATER NOT WORKING, ANTI-FREEZE LEAKING INTO THE PASSENGER SIDE FLOORBOARD. *AK

VISIBILITYDec 2004

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

VISIBILITYNov 2004

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

VEHICLE SPEED CONTROLOct 2004

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

Showing 20 of 335 total NHTSA complaints. Source: NHTSA Complaints Database

Check the exact car

Before you buy, check the exact Mitsubishi Diamante

These pages show model-year patterns across 6 years. Enter a VIN to verify the exact vehicle's accident history, title brands, odometer records, and open recall status before purchase.

The basics

How to read this data

Complaints, recalls, investigations — here’s what each number actually tells you about a used Mitsubishi Diamante, in plain English.

01

What is an NHTSA Complaint?

An NHTSA safety complaint is a report filed directly by a vehicle owner or driver describing a safety-related issue. Anyone can submit a complaint at NHTSA.gov. The number of complaints is a signal of how common a problem is — but complaints per model-year matter more than raw totals, since popular vehicles naturally receive more reports. The Mitsubishi Diamante has 335 complaints on record across 6 model years.

02

What is a Safety Recall?

A safety recall is a mandatory campaign issued by NHTSA when a vehicle component poses an unreasonable risk to safety or does not comply with federal motor vehicle safety standards. Unlike complaints (which are owner-reported), recalls are formally investigated and confirmed by regulators. Manufacturers must fix recalled vehicles free of charge. The Mitsubishi Diamante has 11 recall campaigns in the NHTSA database.

03

What Are Crash Complaints?

Crash complaints are NHTSA filings where the owner indicates a crash occurred as part of the incident. 11 of the Mitsubishi Diamante's 335 complaints involved a crash. This metric is particularly important because it indicates how often defects resulted in actual collisions — a key safety signal beyond general reliability.

04

How Is the Reliability Verdict Calculated?

The reliability verdict (Poor) is generated by analyzing the vehicle's total complaints, recall history, crash complaint ratio, fire complaint ratio, and top component failures relative to class averages. This verdict gives buyers a quick interpretation before they review year-level details and VIN-level history. It should be treated as one decision input, not a substitute for a VIN-specific report.

05

Why Do Newer Years Have Fewer Complaints?

Newer model years appear to have fewer complaints because there has been less time for owners to file them. Complaints accumulate over years of ownership. A 2020 model year vehicle will typically show fewer complaints than a 2015 model year even if it is less reliable — simply because fewer owners have had time to report issues. Focus on complaints per year of market presence when comparing across model years.

06

Fleet Data vs. Individual VIN

Everything on this page reflects aggregated data across all Mitsubishi Diamante vehicles on the road — not any specific car. Two Mitsubishi Diamante vehicles of the same year can have very different histories: one may have been in three accidents and have an open recall; another may be clean. A VIN check gives you the individual car's history: accidents, title brands, odometer records, service history, and real-time recall status.

07

What Are NHTSA Investigations?

When NHTSA receives a pattern of related safety complaints, it opens a formal investigation. A Preliminary Evaluation (PE) is the first stage — NHTSA determines if a safety defect may exist. If evidence is strong, it escalates to an Engineering Analysis (EA), which can result in a mandatory recall. The Mitsubishi Diamante has 0 investigations on record (0 active). Investigations listed above may have already led to the recalls shown on this page.

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By state

Check a Mitsubishi Diamante by state

Title-branding rules, flood-damage exposure, and salvage laws vary by state. Run a free VIN check or explore state-specific vehicle history guidance before buying a used Mitsubishi Diamante.

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Keep researching before you buy

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Mitsubishi Diamante reliability — frequently asked questions

Is the Mitsubishi Diamante reliable?

Poor. The Mitsubishi Diamante has 335 NHTSA owner complaints and 11 recall campaigns across model years. A commonly reported issue area is VISIBILITY. Use year-level data as a pattern guide, then verify the exact car with a VIN check before purchase.

Which Mitsubishi Diamante years to avoid?

Years with the most NHTSA complaints: 2002 (133 complaints), 2001 (79 complaints), 2003 (69 complaints). Use these years as a shortlist for deeper inspection, and always run a VIN check on the exact vehicle before purchase.

What are the most common Mitsubishi Diamante problems?

Top reported issues: VISIBILITY (185 complaints); ENGINE AND ENGINE COOLING (82 complaints); POWER TRAIN (28 complaints).

Does the Mitsubishi Diamante have recalls?

Yes — 11 NHTSA recall campaigns have been issued for the Mitsubishi Diamante. Check nhtsa.gov/recalls or run a VIN check to see if your specific vehicle has open recalls.

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