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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.

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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

Engine And Engine Cooling complaints

4 reports
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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 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 · Oct 12, 1998
Engine And Engine CoolingPower Train

TORQUE CONVERTER/CAMSHAFT, AND POSITION SENSOR FAILED.

NHTSA ODI #781170

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.