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#BS-1999-MITDIA-2ED3

1999 Mitsubishi Diamante

Based on reports from 26 owners and 2 recalls for this exact model.

Complaints

Crashes

Fires

Recalls

TSBs

✅

Preliminary Verdict

Green Light

Based on 26 complaints, 0 crashes, 0 fires, and 2 recalls.

See full verdict with buy/skip conditions

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Mechanic Inspection Checklist

!Check the Visibility:defroster/defogger/hvac System:heater CoreHIGH

8 owners reported visibility:defroster/defogger/hvac system:heater core issues — failures commonly reported around 90K miles.

!Inspect the SuspensionMED

Look for symptoms of wear and premature failure

+ 6 more items in full checklistUnlock

Failure Timeline by Mileage

0–30K

30–60K

60–90K

90–120K

120–150K

150K+

Peak failure range: 60–90K miles (5 reports) • Median: 90K miles

Full report: which components fail at each mileageUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Visibility:defroster/defogger/hvac System:heater Core (8 reports).

Includes fuel costs, common repairs, and recall riskUnlock

Also in your report

Owner Intelligence

AI-synthesized themes from real complaints

Buyer Lot Checklist

Questions, test drive checks, walk-away triggers

Negotiation Talking Points

Data-backed dollar deductions

Buy / Skip Verdict

Final recommendation with conditions

10 sections total in the full reportUnlock all

Where the complaints fall

Visibility:defroster/defogger/hvac System:heater Core8 (31%)

Suspension2 (8%)

Engine And Engine Cooling:cooling System2 (8%)

Service Brakes, Hydraulic:foundation Components:disc1 (4%)

Service Brakes, Hydraulic:foundation Components:disc:rotor1 (4%)

Seats:front Assembly:head Restraint1 (4%)

Seat Belts:front:retractor1 (4%)

Engine And Engine Cooling:engine1 (4%)

1999 Mitsubishi Diamante: Known Issues & Problem Areas

Visibility:defroster/defogger/hvac System:heater Core Issues

Visibility:defroster/defogger/hvac System:heater Core complaints account for 31% of all reports filed for the 1999 Mitsubishi Diamante, with 8 owners filing complaints with NHTSA. The median mileage at time of complaint is 90,000 miles, suggesting issues tend to surface around the 90K-mile mark.

Suspension Issues

Suspension complaints account for 8% of all reports filed for the 1999 Mitsubishi Diamante, with 2 owners filing complaints with NHTSA. Owners should pay attention to suspension-related symptoms during test drives and pre-purchase inspections.

Engine And Engine Cooling:cooling System Issues

Engine And Engine Cooling:cooling System complaints account for 8% of all reports filed for the 1999 Mitsubishi Diamante, with 2 owners filing complaints with NHTSA. Owners should pay attention to engine and engine cooling:cooling system-related symptoms during test drives and pre-purchase inspections.

Service Brakes, Hydraulic:foundation Components:disc Issues

Service Brakes, Hydraulic:foundation Components:disc complaints account for 4% of all reports filed for the 1999 Mitsubishi Diamante, with 1 owners filing complaints with NHTSA. Owners should pay attention to service brakes, hydraulic:foundation components:disc-related symptoms during test drives and pre-purchase inspections.

Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.

Complaint trend by year

Complaints filed with NHTSA by year for the 1999 Mitsubishi Diamante. Recent trend: increasing.

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Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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Recall History (2 recalls)

00V132000Jun 2000

PARKING BRAKE:DRIVELINE:HYDRAULIC

VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE HEAD OF THE SCREW THAT HOLDS THE RETAINING CLIP FOR THE PARKING BRAKE SHOE CAN BECOME BRITTLE AND BREAK OFF.

04V428000

EQUIPMENT:OTHER:LABELS

CERTAIN PASSENGER VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, 'OCCUPANT CRASH PROTECTION.' THE BILINGUAL ENGLISH/SPANISH REMOVABLE AIR BAG WARNING LABELS AFFIXED TO THE DASH AND TO THE SUNVISOR DO NOT MEET THE SIZE REQUIREMENTS OF THE STANDARD.

Recall severity analysis & seller scripts

The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.

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The worst model year for the Mitsubishi Diamante is the 2002 — worth knowing if you're cross-shopping years. The biggest problem area is body / paint.

1999 Mitsubishi Diamante vs. Class Average (Midsize Cars)

This vehicle

Class avg

235

Below the class average — fewer complaints than typical midsize cars vehicles. A good sign.

Complaint counts correlate with sales volume — popular vehicles naturally generate more reports. The full report normalizes for this.

About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 26 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 2 recalls found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

Other Mitsubishi Diamante Model Years

2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992

View all Mitsubishi Diamante years →

1999 Mitsubishi Diamante: Frequently Asked Questions

What is the most common problem with the 1999 Mitsubishi Diamante?

The most commonly reported issue with the 1999 Mitsubishi Diamante is related to the visibility:defroster/defogger/hvac system:heater core, with 8 complaints filed with NHTSA.

Is the 1999 Mitsubishi Diamante reliable?

The 1999 Mitsubishi Diamante has 26 complaints, 0 crash reports, and 0 fire reports filed with NHTSA. This is below the class average — a positive sign for reliability.

How much does it cost to fix 1999 Mitsubishi Diamante problems?

Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.

Does the 1999 Mitsubishi Diamante have any recalls?

Yes, the 1999 Mitsubishi Diamante has 2 recalls on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.

What mileage do Mitsubishi Diamante problems start?

Based on 14 complaints with mileage data, the median mileage at time of complaint is 90,000 miles. The highest concentration of reported issues occurs in the 60–90K mile range. The full report breaks down exactly which components fail at each mileage bracket.

What’s in the full report?

10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.

How is this different from free NHTSA data?

NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.

How is this different from Carfax?

Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.

What if the report isn’t useful?

100% money-back guarantee. If the report doesn’t help you make a more informed decision, we’ll refund you — no questions asked.

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10 sections of AI analysis based on 26 owner reports. Know before you buy.

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