The 1992 Mitsubishi Diamante has 2 NHTSA recall campaigns affecting an estimated 103,000 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 60 complaints with NHTSA, most often about the engine and engine cooling. Last updated July 5, 2026.
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.
BRAKE FLUID LEAKAGE WILL CAUSE ILLUMINATION OF THE BRAKE WARNING LAMP AND REDUCTION IN BRAKING EFFECTIVENESS INCREASING THE RISK OF A VEHICLE ACCIDENT.
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.
BRAKE FLUID LEAKAGE WILL CAUSE ILLUMINATION OF THE BRAKE WARNING LAMP AND REDUCTION IN BRAKING EFFICIENCY INCREASING THE RISK OF A VEHICLE ACCIDENT.
DEALERS WILL REPLACE THE LEFT AND RIGHT FRONT WHEEL-SIDE BRAKE HOSES WITH REVISED HOSE ASSEMBLIES.
Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.
“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,…”
“The motor mount failed, which caused the vehicle to jerk heavily.*jb”
“No summary listed for above vehicle. *ak”
“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”
“While driving vehicle will be burning oil, on internalcombustion at all times.*ak”
“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…”
“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…”
“Brake fluid leaked out from the brakes, and consumer had brakes and rotors replaced and when making a right or left turn. Also,there is humming noise coming from the steering wheel. *ak”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1992 Mitsubishi Diamante as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.