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 where on file — then open the year you're shopping for its AI reliability outlook where NHTSA has enough data.
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 overall rating on file | AI reliability outlook → |
| 2010 Diplomat | 5 | 1 | No overall rating on file | AI reliability outlook → |
| 2009 Diplomat | 1 | 1 | No overall rating on file | Recalls & complaints → |
| 2008 Diplomat | 2 | 2 | No overall rating on file | Recalls & complaints → |
| 2007 Diplomat | 3 | 1 | No overall rating on file | AI reliability outlook → |
| 2006 Diplomat | 3 | 4 | No overall rating on file | AI reliability outlook → |
| 2005 Diplomat | 2 | 1 | No overall rating on file | Recalls & complaints → |
| 2004 Diplomat | 1 | 4 | No overall rating on file | Recalls & complaints → |
| 2002 Diplomat | 1 | 2 | No overall rating on file | Recalls & complaints → |
| 2001 Diplomat | 4 | 6 | No overall rating on file | AI reliability outlook → |
| 2000 Diplomat | 2 | 14 | No overall rating on file | AI reliability outlook → |
| 1999 Diplomat | 3 | 10 | No overall rating on file | AI reliability outlook → |
| 1998 Diplomat | 3 | 1 | No overall rating on file | AI reliability outlook → |
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
- tires4 complaints
- service brakes, hydraulic4 complaints
- unknown or other3 complaints
- suspension3 complaints