2000 Monaco Coach Diplomat Body and structure Problems
- Complaints
- 6about this part
- Share
- 43%of 14 total for the year
- Median mileage
- 16,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the body and structure of the 2000 Monaco Coach Diplomat, 43% of the 14 complaints for this model year. Where a mileage was given, the median is 16,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“On 10/15/02 while driving my rv to a campground, I detected a very strong odor of antifreeze inside the rv and noticed wetness on the carpet near the fire wall. It rendered the defrosting of the front windshield nil and couldn't hardly see outside and damage the side compartment of the r.v. The unit was under warranty and monaco replaced the damaged heater core on 12/23/02. On 1/20/08 on a trip to orlando the same problem occurred again. I almost passed out at the wheel because of the strong odor of antifreeze leaking again inside the coach. Same problem: spited heater core. …”
NHTSA complaint #10217135, filed 2008-02, 16,000 miles“This 2000 monaco, Diplomat motor home has been inhaling exhaust, road dirty etc. Mainly through the rear cap area, since the unit was new. The first sign was an oily stain in the ceiling area mostly around cabinets. For approximately five months the factory told me they did not know what the problem was and until I forced the issue in the fall of 2001, I did not get the answer. The unit had not been sealed at the factory. It was sealed in 2001 though never tested, the problem continues as of today! …”
NHTSA complaint #10016239, filed 2003-04, 10,000 miles“The contact stated while driving 55 MPH on normal road conditions, the rv's windshield cracked and became loose. The incident happened after a year of operation. The windshield was replaced at a vehicle glass shop. The dealership did not assume any responsibility over the windshield failure. The consumer stated the windshield moved over an inch. Updated 09/20/06.”
NHTSA complaint #10166802, filed 2006-08, 32,000 miles“While driving the coach lost all power, the engine shut down, power steering and all electrical systems, after stopping, consumer contaced the monaco technical assistance and without any cross examination the problem was identified as a weak relay, a new relay was shipped to consumer and was installed, which corrected the problem. …”
NHTSA complaint #561987, filed 2001-07“The consumer stated that the luggage door opens while traveling and the entry door jams. Also, the seal on entry door came off. The rubber molding holding the windshield popped at upper corners on both sides. The door, seal and windshield problem was caused by the twisting of the frame.”
NHTSA complaint #564035, filed 2002-01Body and structure: other model years
Other parts of the 2000 Monaco Coach Diplomat
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsElectrical system
2 complaintsLatches, locks and linkages
1 complaintsOther or unknown
1 complaintsSuspension
1 complaintsTires
1 complaints
← All problems reported for the 2000 Monaco Coach Diplomat
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology