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 42 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.
Engine And Engine Cooling. Review the 11 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Service Brakes, Hydraulic. Review the 7 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Air Bags. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
1 crash reports1 fire reports2 injury reports
What owners actually said
42 reports
120,000 miles · Dec 1, 2003
Engine And Engine Cooling
MITSUBISHI HAS PRODUCED 3.0 LITER V6 ENGINES FROM ABOUT 1990 THROUGH 1996 THAT EXHIBIT CHRONIC EXHASUT VALVE GUIDE FUNCTION DETERORIATION AFTER APPROXIMATELY 60,000 MILES. THIS RESULTS IN HEAVY OIL CONSUMPTION AND EVENTUAL ENGINE FAILURE.*AK THIS ENGINE WAS UTILIZED IN THE MITSUBISHI DIAMIANTI, 3000GT, DODGE CARAVAN, CHRYSLER …
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MITSUBISHI HAS PRODUCED 3.0 LITER V6 ENGINES FROM ABOUT 1990 THROUGH 1996 THAT EXHIBIT CHRONIC EXHASUT VALVE GUIDE FUNCTION DETERORIATION AFTER APPROXIMATELY 60,000 MILES. THIS RESULTS IN HEAVY OIL CONSUMPTION AND EVENTUAL ENGINE FAILURE.*AK THIS ENGINE WAS UTILIZED IN THE MITSUBISHI DIAMIANTI, 3000GT, DODGE CARAVAN, CHRYSLER TOWN & COUNTRY, PLYMOUTH VOYAGER AMONG OTHERS.
NHTSA ODI #10048983
Mileage unknown · Mar 6, 2003
Engine And Engine Cooling
THE MOTOR MOUNT FAILED, WHICH CAUSED THE VEHICLE TO JERK HEAVILY.*JB
NHTSA ODI #10009998
Mileage unknown · May 28, 2002
Engine And Engine Cooling
HELLO AND THANKS FIRST OF ALL FOR YOUR TIME, UNTIL JULY 5TH OF 1999 I TRUELY ENJOYED MY CAR. I WAS DRIVING ON I57 ON JULY 5TH AT 65 MPH AND MY CAR SUDDENLY LOST POWER. I HAVING ROADSIDE SERVICE CALLED FROM MY CELL PHONE A TOW TRUCK. THE TOW TRUCK DRIVER ARRIVED WHO WAS ALSO A REPAIR PERSON AND ALSO OWNER OF THE REPAIR SHOP. …
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HELLO AND THANKS FIRST OF ALL FOR YOUR TIME, UNTIL JULY 5TH OF 1999 I TRUELY ENJOYED MY CAR. I WAS DRIVING ON I57 ON JULY 5TH AT 65 MPH AND MY CAR SUDDENLY LOST POWER. I HAVING ROADSIDE SERVICE CALLED FROM MY CELL PHONE A TOW TRUCK. THE TOW TRUCK DRIVER ARRIVED WHO WAS ALSO A REPAIR PERSON AND ALSO OWNER OF THE REPAIR SHOP. HE INFORMED ME HE WOULD TOW MY CAR TO HIS SHOP AND NOTIFY ME THE NEXT DAY OF THE REPAIRS. I BEING 1 1/2 HOURS FROM HOME HAD TO CALL A RELATIVE TO PICK ME UP. I WAS 11:30 PM I HAD NO WAY TO RENT A CAR. THE FOLLOWING MORNING MR LOY THE OWNER CALLED ME TO ADVISE ME THAT MY MOTOR HAD GONE OUT. I THE ASKED WHAT THE COST ANOTHER MOTOR WOULD BE I WAS ADVISED A USED MOTOR WOULD BE $2915. I THEN MADE ABOUT 50 CALLS TO OTHER SERVICE CENTERS TO FIND OUT THE $2900 WAS A FAIR PRICE. MY HAS ALWAYS BEEN WELL MAINTAINED. I WAS OF COURSE VERY UPSET TO FIND OUT BY ABOUT 35 OF THE 50 MECHAINCS I TALKED TO ADVISED ME, I YOU LET THE DIAMONTE IDEL IT WILL BURN OIL THEN WITHOUT NOTICE YOUR ENGINE WILL BLOW. I OF COURSE STILL OWING MONEY ON MY CAR HAD IT REPAIRED. ALONG WITH A $110 TOWING BILL FROM THE INTERSTATE. THIS ACTUALLY GETTS WORSE. IN NOVEMBER OF THE SAME YEAR(1999) THIS WHOLE ISSUED REPEATED! THIS TIME I WAS ON MY LUNCH HOUR AND MY CAR LOST POWER AGAIN. I HAD MY CAR TOWED TO A NEARBY IMPORTED SHOP. CERTAINLY KNOWING THIS TIME IT WOULD NOT BE A BIG REPAIR WELLLLLLLLL MY ENGINE HAD GONE OUT AGAIN!!!!!! THIS TIME LIKE THE FIRST TIME IN TEARS. THIS REPAIR FOR THE SECOND MOTOR COST MY $3200 . THANKS*AK
NHTSA ODI #762368
Mileage unknown · Sep 29, 2001
Engine And Engine Cooling
CONSUMER STATES THE FRONT AND REAR ENGINE SEAL AND PISTON RINGS ARE INOPERATIVE, THE VEHICLE SMOKES EXCESSIVELY.*JB
NHTSA ODI #785685
Mileage unknown · Aug 29, 2001
Electrical System
HORN BUTTON HAS FALLEN OFF 4 TIMES, HAS BEEN REPLACED BY DEALER.*AK
NHTSA ODI #895440
Mileage unknown · Dec 7, 2000
Seat Belts
DRIVERS SIDE BELT DOES NOT RETRACT. *AK
NHTSA ODI #737457
Mileage unknown · Nov 2, 2000
Power Train
NO SUMMARY LISTED FOR ABOVE VEHICLE. *AK
NHTSA ODI #735636
Mileage unknown · Sep 20, 2000
Electrical System
WHENEVER CONSUMER TURNED OFF THE CAR AND TRIED TO START AGAIN IT WON'T START. TOOK VEHICLE TO DEALER, AND THEY SAID THE NEUTRAL SAFETY SWITCH WAS BAD. *AK
NHTSA ODI #871022
Mileage unknown · Sep 15, 2000
Engine And Engine CoolingService Brakes, Hydraulic
1. FRONT BRAKE ROTORS WERE REPLACED AT MILEAGE 82500 FOR PULSATION WHEN BRAKING. NEW ROTORS BEGAN TO PULSATE BEFORE 5000 MILES USE. ROTORS WERE TURNED AND TRUED BY DEALER AT 90,100 MILES, BUT BEGAN TO PULSATE AGAIN WITH IN 2000 MILES. 2. ENGINE EXHAUSTS LIGHT GREY SMOKE UPON ACCELERATION AFTER IDLING FOR 2 MINUTES OR MORE. E…
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1. FRONT BRAKE ROTORS WERE REPLACED AT MILEAGE 82500 FOR PULSATION WHEN BRAKING. NEW ROTORS BEGAN TO PULSATE BEFORE 5000 MILES USE. ROTORS WERE TURNED AND TRUED BY DEALER AT 90,100 MILES, BUT BEGAN TO PULSATE AGAIN WITH IN 2000 MILES. 2. ENGINE EXHAUSTS LIGHT GREY SMOKE UPON ACCELERATION AFTER IDLING FOR 2 MINUTES OR MORE. ENGINE OIL CONSUMPTION ESTIMATED AT 1 QT/3000 MILES.
NHTSA ODI #731515
Mileage unknown · Jul 31, 2000
Engine And Engine Cooling
WHILE DRIVING VEHICLE WILL BE BURNING OIL, ON INTERNALCOMBUSTION AT ALL TIMES.*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.
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.
1992 Mitsubishi Diamante Problems, Complaints & Recalls | Skip That Year