10.0

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
17,383 miles

About These NHTSA Complaints:

The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.

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problem #6

Sep 202005

Diamante 6-cyl

  • Automatic transmission
  • miles
My car is making me sick!! I noticed a smell of anti-freeze coming out of the climate control vents. Upon further investigation, I noticed anti-freeze/engine coolant leaking from the heater core down onto floor mats, climate control intake, electrical wiring inside dashboard, and more importantly automatic transmission computer. This is a significant safety and health issue and needs to be addressed immediately. Where is manufacturer's recall.

- Oviedo, FL, USA

problem #5

Jun 202005

Diamante 6-cyl

  • Automatic transmission
  • 54,300 miles
Noticed a smell of antifreeze comming out of the climate control vents. Upon further investigation, I noticed antifreeze/engine coolant leaking from the heater core down onto floor matts, climate control intake, electrical wiring inside dashboard, and more importantly automatic transmission computer. This is a significant safety and health issue and needs to be addressed immediately. Where is manufacturer's recall.

- Yonkers, NY, USA

problem #4

Nov 212004

Diamante 6-cyl

  • Automatic transmission
  • 5,000 miles
My car is making me sick. I purchased my car in Aug. 2001 and began to notice a smell in the car and fume closely resembling that of radiator coolant. The car was assesed by a Mitsubishi district manager and service personnel from my dealer and deemed to be sound. In the mean time I have suffered with runny eyes and intermittent paralysis in the right side of my face dependent on the amount of time spent in the car. I have contacted Mitsubishi numerous times about this and received no assistance. In November 2004 I noticed an increase in this smell and fogging problems of the interior windows. I took the car to the dealer telling them that I believed the problem was with the heater core. I ascertained this information through internet research dealing with Mitsubishi Diamante defects and problems. The car was returned to me with this problem more severe than when I took it in for repair. Any help or ideas that you can offer would be greatlly appreciated.

- Norfolk, VA, USA

problem #3

Feb 252004

Diamante 6-cyl

  • Automatic transmission
  • 45,000 miles
My heater core went on my automobile. The car is a 2001 Mitsubishi Diamante which has 50,000 miles on it. The problem started when the car had 45,000 miles on it, but I didn't know it was the heater core until later on. The dealer had the car for 2-L/2 days for a job that was 6.9 hours. I was told that the box that the core was in was either broken or couldn't be shut, but then they were able to close it, fix it I hope. I was told by another mechanic that it could have been the O-ring and that they had a car the same year with the same problem, possible recall. The dealer did a shabby job in replacing my dash board, I have 3 screws that I found on the floor, my glove compartment has a screw missing, none of which I have in my possession fits the missing screw hole. When I picked up the car, the steering column came apart in my hands and so they took it back in to fix. Do they not check things after they complete a job, like are all the screws back in place. I will never buy another Mitsubishi and never advise anyone to buy one either. I was told that a heater core shouldn't break at only 50,000 miles and the car is only 3 years old.

- Bordentown, NJ, USA

problem #2

Dec 162003

Diamante

  • miles
Heater core failed, causing the front windshield to fog up. Also, consumer could smell anti freeze inside the vehicle. Dealership was notified but did not resolve the problem.

- Wolcott, CT, USA

problem #1

Jan 022004

Diamante

  • miles
Car smells like coolant. Windows won't clear up while im driving. Very foggy. Dealer said I need a new heater core at 43,000 miles.

- Wheaton, IL, USA