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2000 Monaco Coach Diplomat

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 5 of 14 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Structure. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Equipment. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Visibility. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

1 crash reports1 fire reports1 injury reports

Structure complaints

6 reports
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16,000 miles · Feb 6, 2008
StructureVisibility

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…

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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. THE PLUMBING OF HEATER IS INCORRECT AND MONACO REFUSE TO ACKNOWLEDGED THE PROBLEM. *TR

NHTSA ODI #10217135

32,000 miles · Aug 28, 2006
StructureVisibility

DT*: 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 WI…

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DT*: 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. *JB

NHTSA ODI #10166802

10,000 miles · Apr 21, 2003
Structure

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 IS…

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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! THE UNIT HAD AN ENVIRONMENTAL TEST IN OCTOBER 2001 WITH THE REPORT ISSUED JANUARY 2002 (ENCLOSED) AFTER MONTHS OF TRYING TO SEAL THE UNIT IT STILL LEAKS. IT HAS CAUSED SICKNESS AND ALSO POSSES A HEALTH AND SAFETY RISK AS THE FUMES ARE ALSO ENTERING THE DRIVERS COMPARTMENT. IT WAS INDICATED BY A SENIOR MANAGEMENT OFFICIAL THIS PROBLEM HAS BEEN ON GOING SINCE THE EARLY 1990'S. MONACO, THE MANUFACTURER HAS NOT DEMONSTRATED IT'S ABILITY TO BE ABLE TO FIX THE UNIT, HAS NOT OFFERED TO REPLACE IT AND WILL NOT DO A RECALL ON ALL THESE UNITS AS I HAVE REQUESTED OF THE CEO. *JB

NHTSA ODI #10016239

Mileage unknown · Jul 22, 2002
Structure

THE CONSUMER STATES THAT THE OPERATION OF ONE/BOTH REAR LEVELING JACK(S) WILL INTRODUCE A TORSIONAL OR TWISTING MOVEMENT OF THE COACH CHASSIS, WHICH OVER TIME WILL LOOSEN THE WINDSHIELD FROM THE FRAME AND CAUSE ONE EDGE/CORNER TO UNSEAT/PARTIALLY SEPARATE FROM THE MOLDING GASKET CREATING AN AIR GAP. (OTHER PROBLEMS WHICH ROOT F…

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THE CONSUMER STATES THAT THE OPERATION OF ONE/BOTH REAR LEVELING JACK(S) WILL INTRODUCE A TORSIONAL OR TWISTING MOVEMENT OF THE COACH CHASSIS, WHICH OVER TIME WILL LOOSEN THE WINDSHIELD FROM THE FRAME AND CAUSE ONE EDGE/CORNER TO UNSEAT/PARTIALLY SEPARATE FROM THE MOLDING GASKET CREATING AN AIR GAP. (OTHER PROBLEMS WHICH ROOT FROM THE REAR LEVEL JACK(S) ARE: ELECTRICAL, THE BODY SHIFTING CAUSED THE DOORS TO BIND, 4 TIMES THE PLASTIC LATCH ON THE EXTERIOR CARGO COMPARTMENT DOORS HAVE BROKEN, ALSO CAUSING THE BATTERY INVERTER SYSTEM TO OVER CHARGE THE COACH BATTERY(S). THE MOTORHOME IS UNSAFE TO DRIVE. THE MANUFACTURER STATES THAT THIS OCCURS WHEN THE LEVELING SYSTEM IS BEING USED IMPROPERLY. THE CONSUMER WAS TOLD BY MONACO THAT SOME SERVICE DEPARTMENTS FAILED TO USE PROPER INSTALLATION TECHNIQUES/DID NOT ALLOW PROPER CURVING OF THE WINDSHIELD SEALANT BEFORE PLACING THE VEHICLE BACK INTO SERVICE. *SCC *TS

NHTSA ODI #566793

Mileage unknown · Jan 18, 2002
Structure

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. *YH

NHTSA ODI #564035

Mileage unknown · Jul 10, 2001
Electrical SystemLatches/locks/linkagesStructure

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 PROBLE…

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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. CONSUMER ALSO STATES WHILE PARKED AND CONNECTED TO SHORE POWER, THE INVERTER CHARGING SYSTEM OVERCHARGES THE BATTERIES TO THE EXTENT THAT THE BATTERY WATER BOILS OUT, AND THE BATTERY COMPARTMENT BECOMES EXTREMELY HOT, CONSUMER STATES FOUR INVERTERS HAVE BEEN INSTALLED WITH NO CHANGE IN OPERATION, THE OVERCHARGING PUTS IN EXCESS OF 15 VDC TO ALL SYSTEMS WITH THE RESULT THAT SEVERAL CASES OF SHORTS AND BURNOUTS HAVE OCCURED WITH THE POSSIBILITY OF FIRE.*YH

NHTSA ODI #561987

Official recalls

2

08V257000 · Equipment:recreational Vehicle/trailer

Jun 5, 2008

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.

Consequence & remedy

Consequence: EXTENDED OPERATION OF A LEAKING COOLING UNIT COULD LEAD TO A FIRE FROM GAS WHICH MIGHT ESCAPE.

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. OWNERS MAY CONTACT NORCOLD AT 1-800-767-9101 OR MONACO AT 1-800-685-6545.

01V128005 · Seat Belts:front:buckle Assembly

Apr 30, 2001

VEHICLE DESCRIPTION: CLASS A MOTOR HOMES EQUIPPED WITH SAFETY BELT ASSEMBLIES BUILT BY AM-SAFE. ON SOME SEAT BELTS, THE BUCKLE AND CONNECTOR MAY UNLATCH DURING A COLLISION.

Consequence & remedy

Consequence: SERIOUS INJURY OR DEATH COULD OCCUR IF THE VEHICLE OCCUPANT IS NOT PROPERLY RESTRAINED.

Remedy: DEALERS WILL INSPECT THE LAP BELTS AND, IF NECESSARY, REPLACE IT WITH A NEW BELT ASSEMBLY. AM-SAFE IS CONDUCTING THE OWNER NOTIFICATION. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT AM-SAFE AT 219-266-8330 OR MONACO AT 219-862-7211.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.