IllustrationWINDSHIELD POPPING OUT, TOILET LEAKING, POWER INVERTER NOT WORKING PROPERLY,FRONT JACKS LEAKING, MUFFLER FALLING OFF, SKYLIGHT OVER SHOWER LEAKING. *JB
2001 Monaco Coach Diplomat
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all Diplomat years →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: 3 of 6 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.
- Equipment. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Suspension. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Steering. Review the 1 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 reports0 fire reports0 injury reports
What owners actually said
6 reportsDT*: THE CONTACT STATED WHILE THE DRIVER OF THE COACH WAS DRIVING AT 45 MPH THE RIGHT REAR OUTER TIRE BLEW OUT, IMMEDIATELY AFTERWARDS THE LEFT REAR TIRE BLEW. THIS CAUSED THE DRIVER TO LOSE CONTROL OF THE COACH. THE COACH WENT UP ON AN EMBANKMENT. THE PASSENGER IN THE COACH WAS NOT WEARING A SEAT BELT. THE DOOR WAS RIPPED F…
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DT*: THE CONTACT STATED WHILE THE DRIVER OF THE COACH WAS DRIVING AT 45 MPH THE RIGHT REAR OUTER TIRE BLEW OUT, IMMEDIATELY AFTERWARDS THE LEFT REAR TIRE BLEW. THIS CAUSED THE DRIVER TO LOSE CONTROL OF THE COACH. THE COACH WENT UP ON AN EMBANKMENT. THE PASSENGER IN THE COACH WAS NOT WEARING A SEAT BELT. THE DOOR WAS RIPPED FROM THE HINGES THROWING THE PASSENGER ONTO THE EMBANKMENT. THE PASSENGER WAS RAN OVER BY THE COACH AND BY THE VEHICLE THE COACH WAS TOWING. THE PASSENGER WAS KILLED IN THE ACCIDENT. THE COACH WAS INSPECTED BY A FORENSIC EXPERT AND DETERMINED THE WELDING ON THE DOOR FRAME WAS SHAVED OFF SO THE DOOR WOULD FIT INTO THE FRAME CAUSING THE DOOR TO BE WEAKENED. UPDATED *JB *CN
*DT: THE CONTACT STATED THE LEFT DRIVER'S SIDE WINDOW HAD POOR VISIBILITY DUE TO A SEPARATION OF THE DOUBLE PANEL GLASS. HE CONTACTED THE MANUFACTURER, AND THEY OFFERED NO ASSISTANCE. THIS IS A 2001, MONACO, DIPLOMAT RV. *AK UPDATED 12/27/2005 - THE CONSUMER EXPLAINED THAT THE GLASS WAS CLOUDY, WITH MOISTURE BETWEEN THE PAN…
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*DT: THE CONTACT STATED THE LEFT DRIVER'S SIDE WINDOW HAD POOR VISIBILITY DUE TO A SEPARATION OF THE DOUBLE PANEL GLASS. HE CONTACTED THE MANUFACTURER, AND THEY OFFERED NO ASSISTANCE. THIS IS A 2001, MONACO, DIPLOMAT RV. *AK UPDATED 12/27/2005 - THE CONSUMER EXPLAINED THAT THE GLASS WAS CLOUDY, WITH MOISTURE BETWEEN THE PANES, WHICH MADE IT DIFFICULT TO SEE OUT OF THE WINDOW, ESPECIALLY AT NIGHT. *NM
IT HAS BEEN ALIGNED NUMEROUS TIMES,STEERING PUMP HAS BEEN CHANGED. STILL CAN NOT HOLD THE VEHCLE IN ONE LANE ON HIGHWAY. FACTORY SAYS ALL COMPONENTS ARE "WITH IN" SPECS.
THERE IS A CONSTANT PROPANE SMELL INSIDE VEHICLE. VEHICLE HAS BEEN TAKEN TO DEALER 5 TIMES, WATER HEATER BURNER AND RELAY WERE REPLACED. BUT CONSUMER CAN STILL SMELL THE PROPANE.*AK
VEHICLE EXHIBITS CONSIDERABLE SWAY AND WANDERING WHILE IN MOTION, STEERING GEAR RATED UP TO 9000 LB FRONT AXLE, ACTUAL AXLE WEIGHT 10460, INSTALLED 12,800 LBS. *YD
Official recalls
408V257000 · 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.
02V013001 · Service Brakes, Air:controls, Pedals And Linkages
Jan 7, 2002
ON CLASS A MOTOR HOMES BUILT WITH A STEERABLE AUXILIARY AXLE AND EQUIPPED WITH CERTAIN MERITOR-WABCO BRAKE SYSTEM TWO AND FOUR PORT RELAY VALVES, THE VALVE MAY STICK OPEN WHEN A HIGH-PRESSURE BRAKE APPLICATION IS RELEASED.
Consequence & remedy
Consequence: WHEN THE VALVE STICKS OPEN, IT CAN RESULT IN A TOTAL LOSS OF AIR FROM EITHER THE SERVICE OR THE PARK BRAKE SYSTEM. THE DRIVER MAY LOSE BRAKING ABILITY UNDER A SERVICE APPLICATION, POSSIBLY RESULTING IN A VEHICLE CRASH.
Remedy: DEALERS WILL REPLACE THESE VALVES. MERITOR WABCO IS CONDUCTING THE OWNER NOTIFICATION AND REMEDY FOR THIS CAMPAIGN. 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 MERITOR WABCO AT 800-535-5560 OR MONACO AT 1-877-466-6226.
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.
00V297000 · Equipment:recreational Vehicle/trailer
Oct 11, 2000
VEHICLE DESCRIPTION: CLASS A MOTOR HOMES PRODUCED ON ROADMASTER CHASSIS. A 12VDC 50 AMP MINI-BREAKER ON THE REFRIGERATOR SUPPLY WIRE RATHER THAN A 12 VDC 30 AMP BREAKER.
Consequence & remedy
Consequence: THE SUPPLY WIRE COULD OVERHEAT, WHICH WOULD THEREBY CREATE A RISK OF FIRE.
Remedy: DEALERS WILL REPLACE THE 12VDC 50 AMP BREAKER WITH A 12VDC 30 AMP BREAKER.
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
0No exact-year investigations in this snapshot.