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: 1 of 29 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.
Air Bags. Review the 10 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Service Brakes, Hydraulic. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Power Train. Review the 7 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
10 crash reports1 fire reports7 injury reports
What owners actually said
29 reports
108 miles · Nov 12, 2005
Engine And Engine Cooling
'93 MITSUBISHI DIAMANTE. BOUGHT IN '98 HAS SMOKED AFTER IDLING AT STOPS FOR YEARS AND I THOUGHT IT WAS NORMAL FOR THIS MAKE AND HAVE FOUND THAT A LOT OF MITSUBISHI'S HAVE THE PROBLEM ALSO AND WOULD LIKE TO KNOW THE CAUSE. MECHANIC'S SAY NEW ENGINE IS NEEDED, BUT NEW CARS ALSO SMOKE? COMPRESSION IS GOOD SO WHAT IS THE UNDERLYIN…
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'93 MITSUBISHI DIAMANTE. BOUGHT IN '98 HAS SMOKED AFTER IDLING AT STOPS FOR YEARS AND I THOUGHT IT WAS NORMAL FOR THIS MAKE AND HAVE FOUND THAT A LOT OF MITSUBISHI'S HAVE THE PROBLEM ALSO AND WOULD LIKE TO KNOW THE CAUSE. MECHANIC'S SAY NEW ENGINE IS NEEDED, BUT NEW CARS ALSO SMOKE? COMPRESSION IS GOOD SO WHAT IS THE UNDERLYING PROBLEM? ALSO WILL NOT PASS DEQ WHICH IS ILLEGAL TO DRIVE WITH THAT MUCH SMOKE!*JB
NHTSA ODI #10142504
Mileage unknown · Dec 9, 2002
Air BagsCrash
WHILE TRAVELING ON THE HIGHWAY WITHOUT PRIOR WARNING, THE DUAL AIRBAGS WENT OFF WHICH CAUSED HITTING A DITCH. PLEASE FILL IN ADDITIONAL INFORMATION DEALER IS AWARE OF THE PROBLEM. PH
NHTSA ODI #8024029
Mileage unknown · Aug 5, 2002
Engine And Engine CoolingService Brakes, Hydraulic
OWNER HAS TAKEN VEHICLE TO SEVERAL DEALERS IN HER AREA DUE TO ENGINE MAKING NOISE. DEALERS WERE UNABLE TO FIX PROBLEM, BUT THOUGHT THAT BRAKES WERE THE CAUSE, AND REPLACED THEM SEVERAL TIMES. PLEASE DESCRIBE DETAILS. *AK
NHTSA ODI #8015456
Mileage unknown · Oct 25, 2001
Engine And Engine CoolingPower TrainService Brakes, Hydraulic
I AM HAVING PROBLEMS WITH MY BRAKING SYSTEM. I HAD MY BRAKES FIXED IN FEBRUARY 2001, IT IS NOW 10/2001 AND I HAVE HAD THE BRAKES REPLACED AGAIN. I AM A SAFE DRIVER AND DO NOT DRIVE DANGEROUSLY OR WRECKLESS. I DO NOT UNDERSTAND HOW WEAR AND TEAR OCCURED SO QUICKLY. MY FRONT END VIBRATES VIGOROUSLY WHILE BREAKING. STOPPING SE…
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I AM HAVING PROBLEMS WITH MY BRAKING SYSTEM. I HAD MY BRAKES FIXED IN FEBRUARY 2001, IT IS NOW 10/2001 AND I HAVE HAD THE BRAKES REPLACED AGAIN. I AM A SAFE DRIVER AND DO NOT DRIVE DANGEROUSLY OR WRECKLESS. I DO NOT UNDERSTAND HOW WEAR AND TEAR OCCURED SO QUICKLY. MY FRONT END VIBRATES VIGOROUSLY WHILE BREAKING. STOPPING SEVERAL FEET PAST THE POINT WHERE I BREAKED. THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR. I HAVE TO STOP WAY AHEAD OF A STOP. ALSO, MY CAR SHAKES AND THE BRAKE PEDAL VIBRATES WHEN I TRY TO STOP. AS FOR THE TRANSMISSION, WHILE DRIVING, THE CAR IS IDLED WAY ABOVE THE POINT WHERE IT SHOULD. THE CAR GIVE A BIG THUMP AND THROW FORWARD WHEN I AM TRYING TO BREAK. THE TRANSMISSION IS MAKING FUNNY NOISE, AS IF I AM DRIVING 55 MPH WITH THE CAR IN NEUTRAL. AS FOR THE FUMES, THEY COME IN MY CAR AND IS VERY UNSETTLING. I CAN NOT STAND THE WAY THE FUMES SMELL. THE CAR IS ALSO SMOKING.*AK
NHTSA ODI #753653
Mileage unknown · Jun 22, 2001
Suspension
WHEN DRIVING OVER 30 MPH STEERING WHEEL AND VEHICLE SHAKES AND VIBRATES BADLY. ALSO, PULLS TO THE RIGHT. VEHICLE HAS YET TO BE TAKEN TO DEALER. *AK
NHTSA ODI #890980
Mileage unknown · Apr 25, 2001
Power TrainVehicle Speed Control
VEHICLE WOULD REMAIN IN LOWER GEARS WHILE IN NORMAL OPERATION, RUNNING RPMS UP HIGHER THAN IT SHOULD HAVE BEEN. CONSUMER TOOK VEHICLE TO A DEALERSHIP, WHO REPLACED TRANSMISSION FROM ANOTHER VEHICLE. VEHICLE OPERATED NORMALLY UNTIL SEPTEMBER 2000, WHEN TRANSMISSION WOULD REV UP TO EXCESSIVE RPMS AT SPEED BEING TRAVELED. PLE…
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VEHICLE WOULD REMAIN IN LOWER GEARS WHILE IN NORMAL OPERATION, RUNNING RPMS UP HIGHER THAN IT SHOULD HAVE BEEN. CONSUMER TOOK VEHICLE TO A DEALERSHIP, WHO REPLACED TRANSMISSION FROM ANOTHER VEHICLE. VEHICLE OPERATED NORMALLY UNTIL SEPTEMBER 2000, WHEN TRANSMISSION WOULD REV UP TO EXCESSIVE RPMS AT SPEED BEING TRAVELED. PLEASE PROVIDE ANY ADDITIONAL INFORMATION/ATTACHMENTS.*AK
NHTSA ODI #886774
Mileage unknown · Apr 13, 2001
Service Brakes, HydraulicTires
BRAKES OVERHEATED/CRACKED AND HAD WARPED WHEN APPLIED WHILE DRIVING. FOUND OUT THAT BRAKES WERE UNDERRATED ALONG WITH TIRES BY GOODYEAR. DID NOT KNOW ABOUT THIS UNTIL LATER. *AK CONSUMER STATES VEHICLE USES AUSTRALIAN GOODYEAR TIRES, GTA 205/65R15 H1530, TIRES WERE REPLACED WITH AMERICAN EQUIVALENT GOODYEAR TIRES AND WHILE DRI…
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BRAKES OVERHEATED/CRACKED AND HAD WARPED WHEN APPLIED WHILE DRIVING. FOUND OUT THAT BRAKES WERE UNDERRATED ALONG WITH TIRES BY GOODYEAR. DID NOT KNOW ABOUT THIS UNTIL LATER. *AK CONSUMER STATES VEHICLE USES AUSTRALIAN GOODYEAR TIRES, GTA 205/65R15 H1530, TIRES WERE REPLACED WITH AMERICAN EQUIVALENT GOODYEAR TIRES AND WHILE DRIVING ON ARIZONA HIGHWAYS, TIRES WOBBLE AND BECOME UNSTABLE AFTER 15-20 MINUTES, 3 OTHER TYPES OF GOODYEAR TIRES WERE TRIED, HOWEVER ALL TYPES EXPERIENCED SAME SCENARIO, GOODYEAR HEADQUARTERS INFORMED CONSUMER THAT THE LOAD RATING OF THESE TIRES WERE ONLY 1400 POUNDS WHICH MAY BE INADEQUATE FOR THE 5000 POUND VEHICLE, THE HEAT FROM THE UNDERRATED TIRES STRESSES BRAKE ROTORS, VEHICLE HAS HAD 3 SETS OF ROTORS DUE TO OVERHEATING. *SLC
NHTSA ODI #885904
Mileage unknown · Jan 18, 2001
Air BagsCrash
WHILE DRIVING ABOUT 10 MPH REAR ENDED ANOTHER VEHICLE, AND AIR BAG DID NOT DEPLOY WITHOUT A PRIOR WARNING. *AK
NHTSA ODI #878492
Mileage unknown · Sep 8, 2000
EquipmentSeat BeltsService Brakes, Hydraulic
ABS BRAKE LIGHT KEEPS COMING ON, SOMETIMES PEDAL GOES TO THE FLOOR. CAR ZIGZAGS IN THE BACK, AND EVENTUALLY STOPS. ALSO, DRIVER'S SIDE SEATBELT GETS STUCK IN THE RETRACTOR, EVENTUALLY IT COMES OUT/ AIR CONDITIONER WAS NOT WORKING PROPERLY BECAUSE COMPRESSOR AND CLUTCH WERE STUCK. MADE A LOUD NOISE.*AK
UNDER CONDITIONS OF FULL LOCK STEERING AND FULL SUSPENSION TRAVEL, THE LEFT OR RIGHT FRONT WHEEL-SIDE BRAKE HOSE CAN CRACK, RESULTING IN BRAKE FLUID LEAKAGE.
Consequence & remedy
Consequence: BRAKE FLUID LEAKAGE WILL CAUSE ILLUMINATION OF THE BRAKE WARNING LAMP AND REDUCTION IN BRAKING EFFECTIVENESS INCREASING THE RISK OF A VEHICLE ACCIDENT.
Remedy: DEALERS WILL REPLACE THE LEFT AND RIGHT FRONT WHEEL-SIDE BRAKE HOSES WITH REVISED HOSE ASSEMBLIES.
UNDER CONDITIONS OF FULL LOCK STEERING AND FULL SUSPENSION TRAVEL, THE LEFT OR RIGHT FRONT WHEEL-SIDE BRAKE HOSE CAN CRACK, RESULTING IN BRAKE FLUID LEAKAGE.
Consequence & remedy
Consequence: BRAKE FLUID LEAKAGE WILL CAUSE ILLUMINATION OF THE BRAKE WARNING LAMP AND REDUCTION IN BRAKING EFFICIENCY INCREASING THE RISK OF A VEHICLE ACCIDENT.
Remedy: DEALERS WILL REPLACE THE LEFT AND RIGHT FRONT WHEEL-SIDE BRAKE HOSES WITH REVISED HOSE ASSEMBLIES.
THE REAR OUTBOARD LOWER SAFETY BELT ATTACHMENT BOLT WAS INADEQUATELY TORQUED ON INSTALLATION.
Consequence & remedy
Consequence: THE INADEQUATELY TORQUED ANCHOR BOLT COULD FAIL INA SUDDEN STOP OR ACCIDENT. FAILURE OF THE SAFETY BELT ASSEMBLY RESULTS ININCREASED RISK OF INJURY TO THE SEAT OCCUPANT.
Remedy: RETORQUE THE SAFETY BELT ATTACHMENTS TO THE CORRECT SPECIFICATION.
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.
1993 Mitsubishi Diamante Problems, Complaints & Recalls | Skip That Year
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