1999 Monaco Coach Diplomat: Reliability Data

Source: NHTSA — 22 complaints
22
Total Complaints
Windshield
Top Issue
0
Crash Reports

What Fails?

Most reported component issues from NHTSA complaints.

Windshield
3
Tires
3
Power Window Devices And Controls
1
Recreational Vehicle/Trailer
1
Equipment
1
Wiring
1
Fuel Gauge System
1
Carburetor System
1
Slide-In Camper
1
Structure
1

Severity Assessment

0
Crashes
0
Fires
0
Injuries
0
Deaths

Sample Complaint Reports

"WINDSHIELD POPS OUT OF MOTORHOME IN MIDDLE WHERE THE MOULDING IS. THIS IS THE FOURTH TIME THIS HAS HAPPENED. DEALER IS NOT ABLE TO CORRECT THIS PROBLEM. PLEASE PROVIDE ANY FURTHER DETAILS. *AK"
"WINDSHIELD POPPING OUT AND RESULTING IN LEAKAGE, FIXED PROBLEM HOWEVER CONTINUED TO FAIL. MJS"
"ELECTRONIC STEP SWITCH FAILED (WIRING). MJS"

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

When Were Complaints Filed?

Number of complaints by the year the issue occurred.

Where Are Complaints Coming From?

Top states by complaint count.

NY: 10 FL: 4 MS: 2 VA: 1 CO: 1 AK: 1 TX: 1 WV: 1 AR: 1

Who Files Complaints?

72.7%
Original Owners
27.299999999999997%
Second+ Owners

Monaco Coach Diplomat — Other Years

See how this model compares across different model years.

YearComplaintsCrashes
2000271

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28