Tiffin Allegro Bus 45 MP

Name: Tiffin Allegro Bus 45 MP
Brand: Tiffin

Class Abuilt 2018–20Better build tierScarce on the used market

WHAT ONE COSTS

$308,600est. used (2020, 6 yr old)

Sticker was $501,725 in 2020. Out of production since 2020, so the used market is the only way to buy one. Estimate assumes a 2020 unit.

THE SPECS

Length45.0 ft

Height (incl. A/C)13.3 ft

Width8.4 ft

Interior height6.9 ft

GVWR51,000 lb

Dry weightnot published

Sleeps4

Fresh water100 gal

Grey water100 gal

Black water55 gal

Air conditioning30,000 BTU

Fuel150 gal

Generator10.0-kW Onan Quiet Diesel

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

WHERE PEOPLE SLEEP

1× Rear king bed(Permanent)72×80
1× Sofa bed(Convertible)—
1× Booth dinette/sleeper(Convertible)—

HOW IT'S BUILT: 4/5

WallsLaminated fiberglass

FrameAluminum

RoofWalk-on

UnderbellyEnclosed

Tiffin (Better tier): Tiffin Motorhomes

YEAR BY YEAR: WHAT CHANGED

YEARS	GVWR	DRY	MSRP
2018	51,000 lb	—	$501,725
2019–20	51,000 lb	—	$501,725

2018Introduced
2019Body raised to 13 ft 3 in; tanks grown to 100/100/55
2020Final model year

FINDING ONE

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

OUR TAKE

Short-lived mid-bath 45 that overlapped the OPP for three model years.

OTHER ALLEGRO BUS FLOORPLANS

35 CP · 41,000 lb · sleeps 3 36 AP · 42,000 lb · sleeps 3 36 QSP · 36,600 lb · sleeps 4 37 AP · 41,000 lb · sleeps 4 40 AP · 41,000 lb · sleeps 4 40 IP · 42,000 lb · sleeps 4 40 QBP · 37,600 lb · sleeps 4 40 QXP · 44,600 lb · sleeps 4 40 SP · 40,000 lb · sleeps 4 43 QBP · 54,500 lb · sleeps 4 43 QGP · 50,900 lb · sleeps 4 43 QRP · 54,600 lb · sleeps 4 45 BP · 52,000 lb · sleeps 8 45 FP · 52,000 lb · sleeps 5 the whole line →

Find one for sale

Live listings for the 45 MP 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 Allegro Bus line ↗

Is the 45 MP 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.