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#BS-1999-MONDIP-735B

1999 Monaco Coach Diplomat

Based on reports from 22 owners and 3 recalls for this exact model.

Complaints

Crashes

Fires

Recalls

TSBs

✅

Preliminary Verdict

Green Light

Based on 22 complaints, 0 crashes, 0 fires, and 3 recalls.

See full verdict with buy/skip conditions

Preview: What's in your full report

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Mechanic Inspection Checklist

!Check the Visibility:windshieldHIGH

3 owners reported visibility:windshield issues — failures commonly reported around 40K miles.

!Inspect the Wheels & TiresMED

Look for symptoms of wear and premature failure

+ 6 more items in full checklistUnlock

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Top cost driver: Visibility:windshield (3 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:windshield3 (14%)

Wheels & Tires3 (14%)

Other2 (9%)

Visibility:power Window Devices And Controls1 (5%)

Service Brakes, Hydraulic:foundation Components:disc1 (5%)

Fuel System, Gasoline:storage:tank Assembly1 (5%)

Fuel System, Diesel:storage:tank Assembly1 (5%)

Brakes1 (5%)

1999 Monaco Coach Diplomat: Known Issues & Problem Areas

Visibility:windshield Issues

Visibility:windshield complaints account for 14% of all reports filed for the 1999 Monaco Coach Diplomat, with 3 owners filing complaints with NHTSA. The median mileage at time of complaint is 40,437 miles, suggesting issues tend to surface around the 40K-mile mark.

Wheels & Tires Issues

Wheels & Tires complaints account for 14% of all reports filed for the 1999 Monaco Coach Diplomat, with 3 owners filing complaints with NHTSA. Owners should pay attention to wheels & tires-related symptoms during test drives and pre-purchase inspections.

Visibility:power Window Devices And Controls Issues

Visibility:power Window Devices And Controls complaints account for 5% of all reports filed for the 1999 Monaco Coach Diplomat, with 1 owners filing complaints with NHTSA. Owners should pay attention to visibility:power window devices and controls-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 5% of all reports filed for the 1999 Monaco Coach Diplomat, 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 Monaco Coach Diplomat. Recent trend: decreasing.

Don't negotiate blind — know what this car costs to own

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

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Recall History (3 recalls)

03V166000

EQUIPMENT:RECREATIONAL VEHICLE/TRAILER

ON CERTAIN MOTORHOMES, FIFTH WHEELS AND TRAVEL TRAILERS EQUIPPED WITH NORCOLD REFRIGERATOR COOLING UNITS MODEL NUMBERS 1200LR AND 1200RIM, THESE REFRIGERATORS CAN EXPERIENCE LOW CYCLE FATIGUE FAILURE WHICH CAN LEAD TO THE LIQUID SOLUTION SLOWLY LEAKING FROM THE SEALED, PRESSURIZED COOLING UNIT THROUGH A SMALL CRACK.

03V386000Oct 2003

EQUIPMENT:OTHER:LABELS

ON CERTAIN MOTOR HOMES, THE FEDERAL IDENTIFICATION TAG ON BOTH 36' AND 38' MODELS WAS INCORRECT. THE INITIAL TAG SHOWS THE PSI AS 90 LBS. FRONT AND 100 LBS. REAR. THE CORRECT PSI IS 105 FRONT AND 115 REAR. ALSO, THE FEDERAL IDENTIFICATION TAG ON CERTAIN UNITS INCORRECTLY STATES THAT THE UNIT WAS BUILT WITH A TAG AXLE.

08V257000Aug 2008

EQUIPMENT:RECREATIONAL VEHICLE/TRAILER

MONACO IS RECALLING CERTAIN MOTOR HOMES EQUIPPED WITH NORCOLD REFRIGERATORS. A FATIGUE FAILURE IN THE SECTION OF THE COOLING UNIT WHICH CONTAINS THE REFRIGERANT COULD ALLOW THE LIQUID SOLUTION TO SLOWLY LEAK.

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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About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 22 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 3 recalls found for this vehicle.

Repair Cost Data

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

Other Monaco Coach Diplomat Model Years

2011 2010 2009 2008 2007 2006 2005 2004 2002 2001 2000 1999 1998

View all Monaco Coach Diplomat years →

1999 Monaco Coach Diplomat: Frequently Asked Questions

What is the most common problem with the 1999 Monaco Coach Diplomat?

The most commonly reported issue with the 1999 Monaco Coach Diplomat is related to the visibility:windshield, with 3 complaints filed with NHTSA.

Is the 1999 Monaco Coach Diplomat reliable?

The 1999 Monaco Coach Diplomat has 22 complaints, 0 crash reports, and 0 fire reports filed with NHTSA. The full report analyzes whether these numbers indicate real risk or are proportional to the vehicle’s popularity.

How much does it cost to fix 1999 Monaco Coach Diplomat 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 Monaco Coach Diplomat have any recalls?

Yes, the 1999 Monaco Coach Diplomat has 3 recalls on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.

What mileage do Monaco Coach Diplomat problems start?

Based on 2 complaints with mileage data, the median mileage at time of complaint is 40,437 miles. The highest concentration of reported issues occurs in the 30–60K 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 22 owner reports. Know before you buy.

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