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Monaco Diplomat 38PDQ

Class Abuilt 2005–09Mixed build tierScarce on the used market
WHAT ONE COSTS
$104,200est. used (2009, 17 yr old)

Sticker was $262,161 in 2009. Out of production since 2009, so the used market is the only way to buy one. Estimate assumes a 2009 unit.

THE SPECS
Length39.3 ft
Height (incl. A/C)12.3 ft
Width8.4 ft
Interior height6.8 ft
GVWR33,000 lb
Dry weightnot published
Sleeps6
Slide-outs4
Fresh water100 gal
Grey water62 gal
Black water40 gal
Fuel100 gal
Engine / chassisCummins ISL 400 hp 8.9L / Roadmaster RR8R, Allison 3000 MH 6-speed
GeneratorOnan 8.0 kW Quiet Diesel

A missing row means the maker never published that figure: unknown, not zero.

WHERE PEOPLE SLEEP
  • 1× Master queen bed with solid-surface nightstands(Permanent)60×80
  • 1× 80" roadside sofa bed(Convertible)—
  • 1× 60" curbside loveseat / dinette(Convertible)—
HOW IT'S BUILT: 4/5
WallsLaminated fiberglass
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Monaco (Mixed tier): Monaco Coach Corp (2005-2009), Navistar RV (2010-2013), REV Recreation Group (2014-2017)

YEAR BY YEAR: WHAT CHANGED
YEARSGVWRDRYMSRP
2005–0833,000 lb—$262,161
200936,000 lb—$262,161
  • 2005Introduced
  • 200937 in flatscreen LCD in the living-area hutch; last year of the Monaco Coach Corporation build
FINDING ONE

Scarce: months of watching; be ready to fly and drive it home. Why: 17 years out of production. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

Quad-slide with two lavatories in the bath — the long-running mid-length Diplomat.

OTHER DIPLOMAT FLOORPLANS
36SKT · 33,000 lb · sleeps 438PDD · 33,000 lb · sleeps 440DST · 33,000 lb · sleeps 440PAQ · 33,000 lb · sleeps 440PDQ · 36,000 lb · sleeps 840PRQ · 33,000 lb · sleeps 641PDQ · 36,000 lb · sleeps 841SKQ · 36,000 lb · sleeps 843D · 44,600 lb · sleeps 643DF · 44,600 lb · sleeps 843DFT · 43,000 lb · sleeps 843G · 44,600 lb · sleeps 643P · 44,600 lb · sleeps 643PDQ · 43,000 lb · sleeps 8the whole line →
Find one for sale

Live listings for the 38PDQ on the big marketplaces. Each search opens pre-filled with this exact floorplan:

RV Trader ↗Camping World ↗FB Marketplace ↗Google ↗

Inventory varies by site and day. Slim pickings? search the whole Diplomat line ↗

Is the 38PDQ your #1, or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.

See where it ranks for you →

Data compiled from dealer and aggregator listings, retrieved 2026-07.