Reliability & cost of ownership
Monaco Coach Diplomat Reliability & Common Problems
How reliable is the Monaco Coach Diplomat? Compare every model year side by side — NHTSA recalls, owner complaints, and crash-test stars — then open the year you're shopping for a full reliability and repair-cost forecast.
Monaco Coach Diplomat problems by model year
34 recall entries and 48 owner complaints on file across 13 model years, sourced from the federal NHTSA database.
| Year | Recalls | Complaints | NCAP stars | Full report |
|---|---|---|---|---|
| 2011 Diplomat | 4 | 1 | No NCAP test | Reliability forecast → |
| 2010 Diplomat | 5 | 1 | No NCAP test | Reliability forecast → |
| 2009 Diplomat | 1 | 1 | No NCAP test | Reliability forecast → |
| 2008 Diplomat | 2 | 2 | No NCAP test | Reliability forecast → |
| 2007 Diplomat | 3 | 1 | No NCAP test | Reliability forecast → |
| 2006 Diplomat | 3 | 4 | No NCAP test | Reliability forecast → |
| 2005 Diplomat | 2 | 1 | No NCAP test | Reliability forecast → |
| 2004 Diplomat | 1 | 4 | No NCAP test | Reliability forecast → |
| 2002 Diplomat | 1 | 2 | No NCAP test | Reliability forecast → |
| 2001 Diplomat | 4 | 6 | No NCAP test | Reliability forecast → |
| 2000 Diplomat | 2 | 14 | No NCAP test | Reliability forecast → |
| 1999 Diplomat | 3 | 10 | No NCAP test | Reliability forecast → |
| 1998 Diplomat | 3 | 1 | No NCAP test | Reliability forecast → |
Most-complained-about components
Owner complaints filed with NHTSA against the Monaco Coach Diplomat, grouped by the component each complaint names — the fastest read on where this model gives trouble.
- structure11 complaints
- visibility10 complaints
- equipment9 complaints
- electrical system7 complaints
- service brakes5 complaints
- tires4 complaints
- hydraulic4 complaints
- unknown or other3 complaints