Mitsubishi Diamante Visibility Problems
Owners have filed 210 complaints with NHTSA about visibility problems on the Mitsubishi Diamante across 7 model years. The 2002 model year has the most (71). The words owners use most often: “heater core” (72% of reports).
- 210visibility complaints
- —median miles at failure
- 0mention a crash
- 9mention an injury
- 0related recalls
- $1,600typical repair cost reported by owners
- 31%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Heater core: mentioned in 152 of 210 complaints (72%)
- Anti freeze: mentioned in 50 of 210 complaints (24%)
- Smell antifreeze: mentioned in 17 of 210 complaints (8%)
- Maple syrup: mentioned in 11 of 210 complaints (5%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical visibility repair on the Mitsubishi Diamante at $1,600, and half of them between $1,250 and $1,850.
Based on 58 NHTSA complaints about this problem alone that state a repair bill or quote (2003–2008), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do visibility problems happen?
Based on 151 complaints that reported the odometer reading.
How serious are the reports?
Of 210 complaints, 9 an injury.
Mitsubishi Diamante visibility complaints by model year
| Model year | Visibility complaints | Share of that year | Median miles |
|---|---|---|---|
| 2003 Diamante | 28 | 50% | 60,000 |
| 2002 Diamante | 71 | 58% | 59,000 |
| 2001 Diamante | 56 | 72% | 58,050 |
| 2000 Diamante | 27 | 53% | 63,000 |
| 1999 Diamante | 10 | 43% | 82,000 |
| 1998 Diamante | 15 | 56% | 74,000 |
| 1997 Diamante | 3 | 9% | 112,000 |
When owners reported it
Related recalls (0)
No safety recall lists visibility for the Mitsubishi Diamante. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
The heater core is an extremely dangerous problem. The windows in the car fog up so bad i couldnt drive the car...had to pull over and wipe the windows down. But the thing is...i didnt know what the problems was...until i realized the windows werent just being fogged by the cold, ect it was a toxic…
Tl*the contact owns 1999 mitsubishi diamante. The contact stated that while traveling at various speeds the rear view mirror would shake; and was not securely attached to the windshield. The vehicle was taken to an authorized dealer who stated that the rear view mirror was attached properly. On a…
Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). This concerns my 2003 mitsubishi diamante. It has less than 50,000 miles on it and it has suddenly started spewing a light film on the inside of my front windshield so that i cannot see well...and not at all…
I have a 2003 mitsubishi diamante with 60,000 plus miles. For the past several months i have noticed a strong smell of anti-freeze coming from the vents and the windows constantly fogging up, sometimes to the point that i cannot see to drive. I have read many similar complaints and agree with…
Anti-freeze leak on carpet passenger side near firewall fogged up windows check engine light comes on and off due to the leak the ecu started working awful. *tr

Frequently asked questions
Do all Mitsubishi Diamantes have visibility problems?
No. NHTSA has 210 owner complaints about visibility for the Mitsubishi Diamante. Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the Mitsubishi Diamante visibility?
No recall currently lists visibility for this vehicle.
How much does it cost to fix visibility problems on the Mitsubishi Diamante?
Owners report a typical cost of $1,600 (half paid between $1,250 and $1,850), from 58 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about visibility problems on the Mitsubishi Diamante?
The most frequent phrase is “heater core”, in 152 of 210 complaints, followed by “anti freeze” (50).
See all Mitsubishi Diamante problems.