1999 Monaco Coach Diplomat
Only 10 complaints on file — too few for a fair verdict.
This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.
Only 10 complaints on file — too few for a fair verdict. The data below is complete but unranked.
COMPLAINTS PER YEAR
View as data table
| Year | Complaints |
|---|---|
| 1998 | 1 |
| 1999 | 10 |
| 2000 | 14 |
| 2001 | 6 |
| 2002 | 2 |
| 2004 | 4 |
| 2005 | 1 |
| 2006 | 4 |
| 2007 | 1 |
| 2008 | 2 |
| 2009 | 1 |
| 2010 | 1 |
| 2011 | 1 |
KNOWN PROBLEM AREAS
Only 10 complaints on file for this model year -- too few to rank by share. Raw counts only, below.
3 of 10 total reports mention: visibility.
Show complaint excerpts
WINDSHIELD POPPING OUT AND RESULTING IN LEAKAGE, FIXED PROBLEM HOWEVER CONTINUED TO FAIL. MJS
NHTSA ODI report, 20000322
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
NHTSA ODI report, 19990623
2 of 10 total reports mention: tires.
Show complaint excerpts
RECALL RECEIVED FOR THE WRONG PSI ON THE ORIGINAL TAG FOR TIRE EQUIPMENT/ VEHICLE SUFFERED TIRE BLOWOUT.*MR THE CONSUMER RECEIVED RECALL 03V386000 WHICH INDICATED THAT THE WRONG PSI WAS PUT ON THE ORIGINAL ID TAG.
NHTSA ODI report, 20041201
1 of 10 total reports mentions: visibility.
Show complaint excerpts
ELECTRONIC STEP SWITCH FAILED (WIRING). MJS
NHTSA ODI report, 20000322
1 of 10 total reports mentions: structure.
1 of 10 total reports mentions: service brakes, hydraulic.
SAFETY TIMELINE
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 1
Remedy: OWNERS WILL BE PROVIDED WITH A CORRECT FEDERAL IDENTIFICATION TAG AND INSTALLATION INSTRUCTIONS. OWNER NOTIFICATION BEGAN OCTOBER 24, 2003. OWNERS SHOULD CONTACT MONACO AT 1-800-685-6545.
Campaign 03V386000 — check if this car was fixed
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 SLO
Remedy: MONACO IS WORKING WITH NORCOLD TO REPAIR THESE REFRIGERATORS. NORCOLD WILL PROVIDE THERMAL SWITCH KITS TO OWNERS ALONG WITH THE NECESSARY FORMS AND INSTRUCTIONS. THE RECALL BEGAN ON AUGUST 29, 2008.
Campaign 08V257000 — check if this car was fixed
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...
Remedy: NORCOLD WILL NOTIFY ITS CUSTOMERS AND PROVIDE A REPLACEMENT COOLING UNIT FREE OF CHARGE.
Campaign 03V166000 — check if this car was fixed
BUY-SMART CHECKLIST
1999 Monaco Coach Diplomat — pre-purchase inspection
- Test/inspect for visibility issues (3 reports on file for this year).
- Test/inspect for tires issues (2 reports on file for this year).
- Test/inspect for visibility issues (1 reports on file for this year).
- Verify recall 03V166000 (equipment) has been completed.
- Verify recall 03V386000 (equipment) has been completed.
- Verify recall 08V257000 (equipment) has been completed.
FAQ
Is the 1999 Monaco Coach Diplomat reliable?
There isn't enough NHTSA complaint data on file yet to give this model year a verdict.
What are the most common problems with the 1999 Monaco Coach Diplomat?
The most-reported component is visibility:windshield, accounting for 30% of complaints on file.
How many recalls does the 1999 Monaco Coach Diplomat have?
3 recalls on file for this model year.
Data updated 2026-07-11 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.