2018 Monaco Diplomat problems

Verdict · NHTSA data

Limited data — recalls on file

NHTSA has just 0 complaints on file for the 2018 Monaco Diplomat — too few to judge reliability from owner reports alone — but one recall campaign applies to this year, so any used example should have its VIN checked for completed recall work.

NHTSA complaints

Recalls

Investigations

Crash-involved

Fires reported

Injuries

Deaths

—

NCAP overall

How does 2018 compare to other Diplomat years?

Diplomat NHTSA complaints by model year, 2018 highlighted. Red bars are years to avoid.

See all Diplomat years to avoid →

Does the 2018 Monaco Diplomat have recalls?

1 NHTSA recall campaign on file. Recall repairs are free at franchised dealers.

17V477000LightingJuly 27, 2017 · 219 units

Defect

REV Recreation Group (REV) is recalling certain 2017-2018 Fleetwood Discovery and Discovery LXE, and Holiday Rambler Endeavor, Endeavor XE, and Admiral XE motorhomes, as well as 2018 Monaco Diplomat, Fleetwood Pace Arrow, Bounder, Flair, and Storm motorhomes, and Holiday Rambler Navigator and Vacationer XE motorhomes. The affected vehicles may have been manufactured with headlights that do not have tempered glass lenses.

Consequence

If the headlamp lens is not tempered, it may crack or break, which may cause decreased illumination and/or premature failure of the headlight bulb, increasing the risk of a crash.

Remedy

REV Recreation Group will notify owners, and authorized REV dealers will inspect, and if necessary, replace non-tempered, defective headlamp lenses with new headlamp lenses, free of charge. The recall began on September 8, 2017. Owners may contact REV customer service at 1-800-509-3417. REVs number for the recall is 170720REV.

2018 Monaco Diplomat — common questions

Is the 2018 Monaco Diplomat reliable?

The record is thin — 0 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 1 recall should be verified as completed.

Does the 2018 Monaco Diplomat have recalls?

Yes — NHTSA lists 1 recall campaign affecting the 2018 Monaco Diplomat. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.

How does 2018 compare to other Diplomat years?

Does the 2018 Monaco Diplomat have recalls?

2018 Monaco Diplomat — common questions

Is the 2018 Monaco Diplomat reliable?

Does the 2018 Monaco Diplomat have recalls?

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