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1997 Mitsubishi Diamante

Owner reports · Recalls · Investigations

Similar to other model years

Owner complaints for the 1997 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

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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

Limited mileage data: 4 of 34 reports include usable mileage. There isn’t enough coverage to show a useful chart.

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.

  • Service Brakes, Hydraulic. Review the 13 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Power Train. Review the 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine And Engine Cooling. 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.

2 crash reports1 fire reports1 injury reports

What owners actually said

34 reports
151,000 miles · Jul 7, 2008
TiresCrashInjury

TL*THE CONTACT OWNS A 1997 MITSUBISHI DIAMANTE. THE VEHICLE HAS COOPER LIFELINER CLASSIC II TIRES, SIZE 115/60/15. WHILE DRIVING APPROXIMATELY 70 MPH, THE REAR DRIVER'S SIDE TIRE SPONTANEOUSLY BLEW OUT. THE CONTACT LOST CONTROL OF THE VEHICLE AND CRASHED. THE VEHICLE WAS COMPLETELY DESTROYED AND A POLICE REPORT WAS FILED. …

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TL*THE CONTACT OWNS A 1997 MITSUBISHI DIAMANTE. THE VEHICLE HAS COOPER LIFELINER CLASSIC II TIRES, SIZE 115/60/15. WHILE DRIVING APPROXIMATELY 70 MPH, THE REAR DRIVER'S SIDE TIRE SPONTANEOUSLY BLEW OUT. THE CONTACT LOST CONTROL OF THE VEHICLE AND CRASHED. THE VEHICLE WAS COMPLETELY DESTROYED AND A POLICE REPORT WAS FILED. PRIOR TO THE CRASH, SHE NOTICED THAT THE TIRE PRESSURE WAS NORMAL AND THAT THE TREAD DEPTH WAS 8/32. AFTER INSPECTING THE TIRE, AN OFFICER CONCLUDED THAT THE TREAD WAS DEFECTIVE BECAUSE CHUNKS OF THE TREAD WERE MISSING AND WIRES WERE HANGING OUT OF THE TIRES. THE CONTACT HAS PICTURES OF THE FAILED COMPONENT. THE TIRE FAILURE MILEAGE WAS 13,000. THE VEHICLE FAILURE MILEAGE WAS 151,000. UPDATED 09/10/08 *BF UPDATED 09/16/08. *JB

NHTSA ODI #10233373

112,000 miles · Feb 11, 2008
Visibility

TL*THE CONTACT OWNS A 1997 MITSUBISHI DIAMANTE. THE CONTACT STATED THAT THE RADIATOR LEAKED DUE TO THE HEATER CORE. THE RADIATOR LEAKED ONTO THE CARPET WHEN THE HEAT WAS ACTIVATED. THE CONTACT STATED THAT HE AND HIS FAMILY HAVE INHALED TOXIC FUMES FROM THE RADIATOR LEAKING ONTO THE CARPET AND THEY ARE CONCERNED OF FUTURE HEAL…

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TL*THE CONTACT OWNS A 1997 MITSUBISHI DIAMANTE. THE CONTACT STATED THAT THE RADIATOR LEAKED DUE TO THE HEATER CORE. THE RADIATOR LEAKED ONTO THE CARPET WHEN THE HEAT WAS ACTIVATED. THE CONTACT STATED THAT HE AND HIS FAMILY HAVE INHALED TOXIC FUMES FROM THE RADIATOR LEAKING ONTO THE CARPET AND THEY ARE CONCERNED OF FUTURE HEALTH RISKS. IN ORDER TO REPAIR THE LEAK, THE ENTIRE DASHBOARD HAD TO BE REMOVED. THE VIN WAS UNAVAILABLE. THE CURRENT MILEAGE WAS 113,000 AND FAILURE MILEAGE WAS 112,000.

NHTSA ODI #10217732

111,132 miles · Jan 21, 2008
Engine And Engine Cooling

THERE IS A MAJOR PROBLEM WITH THE MITSUBISHI DIAMANTE HEATER CORE GOING OUT. MINE WENT OUT A FEW DAYS AGO AND WAS INFORMED BY MITSUBISHI IT WILL COST ME 965 TO REPLACE. EVEN THOUGH THERE ARE HUNDREDS OF MITSUBISHI DIAMANTE OWNERS COMPLAINING ABOUT THIS PROBLEM INCLUDING WITH PEOPLE THAT HAVE AS LOW AS 30-45K ON THEIR VEHICLE. …

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THERE IS A MAJOR PROBLEM WITH THE MITSUBISHI DIAMANTE HEATER CORE GOING OUT. MINE WENT OUT A FEW DAYS AGO AND WAS INFORMED BY MITSUBISHI IT WILL COST ME 965 TO REPLACE. EVEN THOUGH THERE ARE HUNDREDS OF MITSUBISHI DIAMANTE OWNERS COMPLAINING ABOUT THIS PROBLEM INCLUDING WITH PEOPLE THAT HAVE AS LOW AS 30-45K ON THEIR VEHICLE. PLEASE LOOK AT THIS FORUM WHICH SHOW MANY MITSUBISHI OWNERS COMPLAINING ABOUT THEIR VEHICLE.. HTTP://WWW.DIAMANTEOWNERS.COM/FORUM/LOFIVERSION/INDEX.PHP?T3615-0.HTML PLEASE HELP ME AND HELP THESE POOR OWNERS. RECALL THIS MAJOR ERROR MISTUBISHI KNOWS ABOUT BUT REFUSES TO DO ANYTHING ABOUT IT AND KEEP SILENT. THIS ALSO CAN CAUSE DEATH BECAUSE WHEN THE HEATER CORE FAILS IT LEAKS AND CAUSES A BAD ODOR OF ANTIFREEZE. YOU WOULDN'T WANT YOUR KIDS BREATHING ON THAT WOULD YOU. ON THE WEBSITE I HAVE PROVIDED YOU IT WILL SHOW A CASE IN WHICH A PERSON WENT INTO RESPIRATORY FAILURE DO TO INHALING ANTI FREEZE.. MANY OF THESE OWNERS TILL THIS DAY FACE A DANGER BECAUSE THEY HAVE NO CHOICE BUT TO DRIVE THESE VEHICLES AS IT IS THERE ONLY MEANS OF TRANSPORTATION AND MANY CANNOT AFFORD TO FIX THIS EXPENSIVE PROBLEM (COSTING AS MUCH AS 1,300). WE BEG OF ALL THE GOOD PEOPLE THAT HAD MADE A DIFFERENCE IN PEOPLES LIVES, SAFETY AND SECURITY TO HELP US DIAMANTE OWNERS THANK YOU AND GOD BLESS *TR

NHTSA ODI #10215505

Mileage unknown · Jun 17, 2007
Engine And Engine Cooling

HEATER CORE RANDOMLY CRACKED ONE DAY, CAUSING A TEAR-LIKE SPILL OF ANTI-FREEZE THROUGH THE TOP OF THE RADIATOR. CAR WAS TAKEN TO A MECHANIC AND WE TRIED WELDING THE CRACKS. ANTI-FREEZE STILL SPILLED OUT AND ANTI-FREEZE SMELL CAME IN THROUGH AIR EVENTS AND THE LIQUID ALSO BURNED, CAUSING SMOKE TO COME OUT FROM UNDER THE HOOD. …

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HEATER CORE RANDOMLY CRACKED ONE DAY, CAUSING A TEAR-LIKE SPILL OF ANTI-FREEZE THROUGH THE TOP OF THE RADIATOR. CAR WAS TAKEN TO A MECHANIC AND WE TRIED WELDING THE CRACKS. ANTI-FREEZE STILL SPILLED OUT AND ANTI-FREEZE SMELL CAME IN THROUGH AIR EVENTS AND THE LIQUID ALSO BURNED, CAUSING SMOKE TO COME OUT FROM UNDER THE HOOD. *AK

NHTSA ODI #10193546

Mileage unknown · Sep 21, 2005
Structure

THE PAINT ON THE ROOF AND TRUNK DECK OF MY 1997 DIAMANTE IS FADING WITH WHITE PATCHES. THE HOOD AND BODY PAINT LOOKS GOOD AS NEW. I WAXED MY VEHICLE AT LEAST 3 TIMES A YEAR. IS THIS A DEFECT FROM THE FACTORY I HAVE NOTICE SEVERAL SIMILAR MODELS WITH THE SAME PROBLEM. WHAT SHOULD I DO ABOUT THE PROBLEM? *JB

NHTSA ODI #10137204

78,000 miles · Jun 9, 2005
Fuel System, GasolineFire

DT: CONSUMER HAD 1997 MITSUBISHI DIAMANTE. CONSUMER TOOK VEHICLE TO DEALER,. VEHICLE HAD A GAS LEAK, DEALER COULD NOT FIND HOLE IN GAS TANK, CONSUMER REPLACED GAS TANK, ABOUT 8 MONTHS AFTER GAS TANK WAS REPLACED THE VEHICLE EXPLODED. *AK

NHTSA ODI #10124674

Mileage unknown · Feb 22, 2002
Fuel System, GasolinePower Train

SAFETY - TRANSMISSION: AT 9,500 MILES MY CAR STARTED LURCHING WHEN STEPPING ON THE GAS FROM A STOP. IT SUPPOSEDLY WAS REPAIRED BUT HAS CONTINUED TO BE PROBLEM AND EACH TIME I BRING IT IN FOR SERVICE THE DEALER CAN NOT RECREATE THE PROBLEM. SINCE I HAD NOT HEARD THAT THIS HAS BEEN ON GOING PROBLEM WITH THIS MODEL, I THOUGHT IT…

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SAFETY - TRANSMISSION: AT 9,500 MILES MY CAR STARTED LURCHING WHEN STEPPING ON THE GAS FROM A STOP. IT SUPPOSEDLY WAS REPAIRED BUT HAS CONTINUED TO BE PROBLEM AND EACH TIME I BRING IT IN FOR SERVICE THE DEALER CAN NOT RECREATE THE PROBLEM. SINCE I HAD NOT HEARD THAT THIS HAS BEEN ON GOING PROBLEM WITH THIS MODEL, I THOUGHT IT MUST BE SOMETHING THAT I HAD DONE. UPON REVIEWING THE INFORMATION OF NHSTA, I REALIZE THAT THE DEALERS AND MITSUBISHI ARE DELIBERATELY HIDING THIS PROBLEM. SAFETY - FUEL TANK: MY FUEL TANK BEGAN LEAKING AT 59,560 MILES AND WHEN THE DEALER REMOVED IT HAD 3 STRESS WHOLES. THE TANK HAD TO BE SENT OUT FOR WELDING. OF COURSE, I HAD TO PAY FOR THE REPAIR EVEN THOUGH I SPOKE DIRECTLY TO THE MITSUBISHI COMPLAINT DEPARTMENT. SINCE IT WAS NOT A RECALL ITEM, MITSUBISHI OR THE DEALER WILL NOT PAY FOR THE REPAIR. THE DANGEROUS FUEL LEAK IS ANOTHER ONGOING HIDDEN PROBLEM. ALTERNATOR PULLEY: HAS BEEN MAKING NOISE FROM THE BEGINNING AND I HAVE COMPLAINED EACH SERVICE. NOW, I DISCOVER THROUGH NHTSA THAT ALTERNATOR PULLEY IS A KNOWN DESIGN FLAW. MITSUBISHI AND THEIR DEALERS MUST BE HELD ACCOUNTABLE.*AK

NHTSA ODI #758506

Mileage unknown · Nov 26, 2001
Steering

NO SUMMARY LISTED FOR ABOVE VEHICLE. *AK

NHTSA ODI #754919

Mileage unknown · Sep 17, 2001
Engine And Engine CoolingPower TrainService Brakes, Hydraulic

I PURCHASED THIS VEHICLE 2 MONTHS AGO AND HAVE MADE 5 TRIPS BACK TO THE DEALER DUE TO BRAKES, TIRES & ENGINE TAPPING AND NOW THE TRANSMISSION SEEMS TO BE SLIPPING. *AK (DOT NUMBER: N/A TIRESIZE: P21560R16)

NHTSA ODI #752292

Mileage unknown · Jan 25, 2001
Service Brakes, Hydraulic

WHEN CONSUMER APPLIES BRAKES THERE IS SMOKE COMING FROM WHEEL, AND BRAKES DO NOT WORK. DEALERSHIP IS AWARE OF PROBLEM. *AK

NHTSA ODI #879060

Official recalls

0

No recalls in this snapshot.

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

0

No exact-year investigations in this snapshot.