Total Complaints
43 filings
MITSUBISHI DIAMANTE · model year
1993 MITSUBISHI DIAMANTE
43 NHTSA complaints, 10 crash reports for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1993MITSUBISHIDIAMANTE carries 43 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 10 crashes, 1 fire, 7 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1993 DIAMANTE is air bags:frontal with 8 filings, followed by service brakes, hydraulic:foundation components (4) and power train:automatic transmission (3). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 14 investigation files overlapping the 1993 DIAMANTE. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
43
Complaints
10
Crashes
1
Fires
7
Injuries
0
Deaths
Crashes Reported
10 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| AIR BAGS:FRONTAL | 8 |
| SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS | 4 |
| POWER TRAIN:AUTOMATIC TRANSMISSION | 3 |
| SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP | 3 |
| POWER TRAIN:MANUAL TRANSMISSION | 2 |
| SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:ROTOR | 2 |
| AIR BAGS | 2 |
| VEHICLE SPEED CONTROL | 2 |
| POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL) | 1 |
| ELECTRICAL SYSTEM:WIRING | 1 |
| STRUCTURE:BODY:HOOD | 1 |
| VISIBILITY:WINDSHIELD WIPER/WASHER | 1 |
| STRUCTURE:BODY:DOOR | 1 |
| SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:PADS | 1 |
| POWER TRAIN | 1 |
Recent Complaints
20051112ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)
'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
Mileage: 108
20051112ENGINE 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 UNDERLYING PROBLEM? ALSO WILL NOT PASS DEQ WHICH IS ILLEGAL TO DRIVE WITH THAT MUCH SMOKE!*JB
Mileage: 108
20021209CrashAIR BAGS:FRONTAL
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
20020805SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS
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
20020805ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
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
20011101SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS
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
20011101ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
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
20011101POWER TRAIN:AUTOMATIC TRANSMISSION
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
20010622SUSPENSION:FRONT
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
20010425POWER TRAIN:AUTOMATIC TRANSMISSION
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
20010425VEHICLE 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. PLEASE PROVIDE ANY ADDITIONAL INFORMATION/ATTACHMENTS.*AK
20010413SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS
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
20010413TIRES
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
20010118CrashAIR BAGS:FRONTAL
WHILE DRIVING ABOUT 10 MPH REAR ENDED ANOTHER VEHICLE, AND AIR BAG DID NOT DEPLOY WITHOUT A PRIOR WARNING. *AK
20000908SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
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
20000908SEAT BELTS:FRONT:RETRACTOR
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
20000908EQUIPMENT:APPLIANCE:AIR CONDITIONER
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
19991005POWER TRAIN:MANUAL TRANSMISSION
NO SUMMARY.
19990401VEHICLE SPEED CONTROL
VEHICLE STALLED OUT UNDER HEAVY BRAKING CONDITIONS AND ALSO AT IDLE. THROTTLE BODY CLEANED AS REPAIRED. AUTO CONTINUED POOR IDLE. LATER, BATTERY BECAME FULLY DRAINED. WITH HEADLIGHTS ON AT HIGHWAY SPEEDS, ENGAGING BRAKES OR TURNING ON ANY CABIN ELECTRICAL DEVICE WOULD FLICKER AND DIM THE HEADLIGHTS. REPLACED BATTERY AND BELTS FOR REPAIR. ALTERNATOR TESTED OUT OKAY. POOR IDLING ATTRIBUTED TO LOW VOLTAGE TO IDLE SPEED MOTOR. CONTINUING ISSUE: ENGAGING BRAKES FLICKER AND DIM DASHBOARD LIGHTS. THE APPLICATION OF THE BRAKES(OR BRAKE LIGHTS, PERHAPS) INTERFERES WITH THE ELECTRICAL SYSTEM AND ULTIMATELY, ENGINE OPERATION. THIS SEEMED MOST EVIDENT WHEN VOLTAGE WAS AT A PREMIUM. *AK
19990401VEHICLE SPEED CONTROL:CRUISE CONTROL
VEHICLE STALLED OUT UNDER HEAVY BRAKING CONDITIONS AND ALSO AT IDLE. THROTTLE BODY CLEANED AS REPAIRED. AUTO CONTINUED POOR IDLE. LATER, BATTERY BECAME FULLY DRAINED. WITH HEADLIGHTS ON AT HIGHWAY SPEEDS, ENGAGING BRAKES OR TURNING ON ANY CABIN ELECTRICAL DEVICE WOULD FLICKER AND DIM THE HEADLIGHTS. REPLACED BATTERY AND BELTS FOR REPAIR. ALTERNATOR TESTED OUT OKAY. POOR IDLING ATTRIBUTED TO LOW VOLTAGE TO IDLE SPEED MOTOR. CONTINUING ISSUE: ENGAGING BRAKES FLICKER AND DIM DASHBOARD LIGHTS. THE APPLICATION OF THE BRAKES(OR BRAKE LIGHTS, PERHAPS) INTERFERES WITH THE ELECTRICAL SYSTEM AND ULTIMATELY, ENGINE OPERATION. THIS SEEMED MOST EVIDENT WHEN VOLTAGE WAS AT A PREMIUM. *AK
Compare 1993MITSUBISHIDIAMANTE to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 1993 MITSUBISHI DIAMANTE have?▼
The 1993 MITSUBISHI DIAMANTE has 43 NHTSA complaints, 10 crashes, 1 fires, 7 injuries, and 0 deaths reported.
What are the most common problems with the 1993 MITSUBISHI DIAMANTE?▼
The most-complained component for the 1993 MITSUBISHI DIAMANTE is AIR BAGS:FRONTAL with 8 complaints. Other frequently reported areas include SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS and POWER TRAIN:AUTOMATIC TRANSMISSION.
Is the 1993 MITSUBISHI DIAMANTE safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.