Tiffin Motorhomes Allegro Bus Motor Home Class A - Diesel

When you want to travel the country but don't want to give up luxury for convenience, choose the Allegro Bus class A diesel motorhomes by Tiffin. These units feature high-end amenities so you can enjoy upscale residential living to its fullest. The custom Tiffin-built PowerGlide chassis is designed for durability and performance wherever the road takes you.


Each unit includes a panoramic windshield to give you the best view possible as you travel and the Ultraleather power driver and passenger's seats will provide the best seats in the house. From the stainless steel residential refrigerator and handcrafted cabinetry, to the memory foam king mattress and solid surface shower with a glass door, you'll find luxurious features throughout these models.


For unmatched elegance for those who enjoy the finer things in life, choose an Allegro Bus class A diesel motorhome by Tiffin Motorhomes today!



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Motor Home Class A - Diesel

  1. Outdoor Entertainment
    • Length: 38 ft 11 in
    • Slides: 4
    • Sleeps: 4

    7 Available Now!

  2. Outdoor Entertainment
    • Length: 41 ft 0 in
    • Slides: 4
    • Sleeps: 4

    6 Available Now!

  3. Bath and a Half, Outdoor Entertainment
    • Length: 41 ft 0 in
    • Slides: 4
    • Sleeps: 5

    12 Available Now!

  4. Bath and a Half, Outdoor Entertainment
    • Length: 40 ft 11 in
    • Slides: 4
    • Sleeps: 4

    1 Available Now!

  5. Bath and a Half, Rear Bath
    • Length: 41 ft 0 in
    • Slides: 4
    • Sleeps: 5

    4 Available Now!

  6. Outdoor Entertainment, Walk-Thru Bath
    • Length: 45 ft 0 in
    • Slides: 4
    • Sleeps: 5

    1 Available Now!

  7. Bath and a Half, Outdoor Entertainment
    • Length: 45 ft 0 in
    • Slides: 4
    • Sleeps: 5
  8. Bath and a Half, Outdoor Entertainment
    • Length: 45 ft 0 in
    • Slides: 4
    • Sleeps: 5

    18 Available Now!

Showing 1 - 8 of 8
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Allegro Bus Features:

Standard Features (2020)


General Construction


  • One-piece, moisture resistant molded fiberglass roof cap provides insulation & strength & prevents water intrusion
  • AC Condensation Drainage System that runs internally through the roof insulation & down the sidewalls, redirecting water underneath the motor home
  • 5½" formed insulation
  • Quiet Air Cooling System with return air & foil-wrapped cooling exhaust ducts
  • Durable, tubular aluminum roof skeleton
  • Easy-to-clean soft touch vinyl ceiling panel


  • Gel-coat fiberglass outside wall panel
  • High-performance thermal insulation
  • Durable, yet lightweight, tubular aluminum wall skeleton
  • Decorative inside wall panel


  • Porcelain tile floor bonded to high-impact oriented strand board
  • High-level engineered oriented strand board
  • High-performance thermal insulation
  • Durable, tubular floor skeleton
  • Woven moisture barrier material

General Mechanical


  • PowerGlide® Chassis with Cummins ISL9 450 HP/1250 lb Torque
  • Allison 3000 MH 6-speed Automatic Transmission with Lock-up (Torque Converter)
  • Side-mounted Cooling Package
  • ABS Brakes and Two-stage Compression Engine Brake
  • Six Aluminum Wheels
  • Air Bags: (6; Bus 45 OPP, Bus 45 MP) (4; Bus 40 IP, Bus 40 AP, Bus 37 AP)
  • Cruise Control
  • VIP Smart Wheel
  • Fog Lights
  • Emergency Start Switch
  • Adjustable Fuel and Brake Pedals
  • Independent Front Suspension
  • Hitch Rating*: 15,000 lb
  • Fuel Tank (gallons) – Dual Fuel Fill: 150
  • One-piece Molded Fiberglass Roof Cap
  • Laminated Floor, Sidewall and Roof
  • Steel/Aluminum Reinforced Structure
  • Tire Size: 315/80R22.5
  • Alternator Amps: 210
  • DEF Tank*** (gallons): 10

General Mechanical Optional (Bus 45 MP, Bus 45 OPP ONLY)

  • PowerGlide® X15 Chassis with Cummins 605 HP/1950 lb Torque
  • Allison 4000 MH 6-speed Automatic Transmission with Lock-up (Torque Converter)
  • GVWR: 51,000 lb
  • GAWR – Front: 17,000 lb
  • GAWR – Rear: 23,000 lb
  • GAWR-Tag Axle: 13,000 lb
  • GCWR: 71,000 lb
  • Alternator Amps: 280
  • DEF Tank* (gallons): 15
  • Basement Storage (cubic feet - approximately): 237
  • Wheel Base: 316"
  • Tire Size: 315/80R22.5
  • Hitch Rating**: 20,000 lbs

General Exterior


  • Fiberglass Front and Rear Caps
  • Dual Fuel Fills
  • Exterior Ground Effects Lighting
  • Full-body Paint with Protective Film on Front Cap
  • Large Tinted One-piece Windshield
  • Heated Chrome Power Mirrors with Remote Adjustments
  • Single-motor Intermittent Wipers
  • Undercoating
  • Deadbolt Front Entrance Door
  • Keyless Entry Door System and Keyless Component Door Locks
  • Exterior Flat Panel TV
  • Dual Pane Tinted Windows
  • Electric Door and Patio Awning
  • Girard® Awning
  • Pass-through Basement Storage
  • Lockable Swing-out Exterior Storage Doors with Gas Shocks
  • Heated Water and Holding Tank Compartments
  • SeeLeveL Monitor Pad Located at Dump Station
  • Auto Generator Start
  • Six House Batteries
  • Custom Mud Flap
  • 50 Amp Service
  • Power Cord Reel – 50 amp
  • Black Holding Tank Flush System
  • 110 V Exterior Receptacle
  • Gravity Water Fill
  • Water Filter
  • Docking Lights
  • Exterior Rinse Hose with Soap Dispenser and Paper Towel Holder
  • Concealed Air Horn
  • Low Profile In-motion Satellite Dish*
  • Digital TV Antenna
  • Combination Valid Air Leveling System with HWH Hydraulic Leveling Jacks
  • Luggage Compartment Lights
  • Pure Sine Wave Inverter
  • Onan® 10.0 kw Generator with Three 15 K Low Profile Roof ACs with Heat Pumps
  • Prep for Winegard® TRAV'LER Satellite
  • Exterior Ground Effects Lighting
  • Outdoor Spyder® Control System Screen
  • Prep for Solar Panel
  • Prep for Winegard ConnecT™

General Exterior Optional

  • One or Two Storage Compartment Slide-out Trays
  • One or Two Power Storage Compartment Slide-out Trays
  • Three or Six Solar Panels
  • Roof Ladder
  • Basement Freezer/Refrigerator
  • Exterior Lighting Under Slide-out
  • Extended Cycle Batteries
  • Second Girard Patio Awning
  • Winegard ConnecT (subscription required)
  • Power Exterior TV Door
  • Power Window Awnings

General Interior

  • LED Lighting
  • Soft Touch Vinyl Ceilings
  • Washer/Dryer Ready
  • SeeLeveL Tank Monitor
  • Carbon Monoxide and Smoke Detectors
  • Central Vacuum Cleaner with VacPan
  • Multiplex Lighting System
  • Porcelain Tile Flooring Throughout Coach (Excluding Slide-outs)
  • Tuscany Sea Salt Tile Floor
  • Complete Cable Wiring Interfacing with Surround Sound and Satellite Receiver
  • Surround Sound Speakers in Ceiling
  • Energy Management System
  • Power Solar and Privacy Shades in Living Room
  • In-motion Low Profile Satellite Dish with DISH Network® Receiver (Subscription Required)
  • Extraordinaire™ AC System
  • Hydronic Heating System
  • 10” Spyder Control System Screen

General Interior Optional

  • Latte, Posh II, Sand Castle II, or Tempest Fabric Suites*
  • Silkworm or Grey Owl Ultraleather*
  • Glazed Cherry Wood*, Glazed Canyon Cherry*, Glazed Honey Natural Cherry*, Linen Cabinets, Sterling Cabinets
  • Luster Sheen Cabinet Finish (Only available with glazed cabinet option)
  • Solid Cabinet Doors and Drawer Fronts
  • Glossy Porcelain Wood Plank Floor
  • Stacked Washer/Dryer
  • Dual Zone Heated Tile Floor

Driver Compartment


  • Front Overhead Flat Panel TV
  • Cupholders on Driver and Passenger Side
  • 12 V Disconnect Switch
  • Driver Side Power Window
  • Integrated Seatbelts
  • Ultraleather Power Driver and Passenger Seats
  • Ultraleather Power Passenger Seat with Footrest
  • Satellite Radio (subscription required)
  • Color Rear Vision Monitor System with Side-view Cameras Activated by Turn Signals
  • Power Solar and Privacy Windshield and Cockpit Shades
  • CD Player and AM/FM Stereo
  • Lighted Switches
  • Fire Extinguisher
  • Dual Dash Fans
  • Beverage Tray
  • In-dash Navigation System
  • USB Dash Receptacles
  • USB Passenger Side Receptacles
  • Power Step Well Cover
  • Solid Non-opening Window on Passenger Side
  • Driver and Passenger Seat Lumbar Support
  • Digital Instrument Cluster
  • Phone Charging Station - Passenger Side Seating Area

Driver Compartment Optional

  • Mobileye®
  • JBL Sound System
  • Advanced Monitor (Only available with JBL Sound System)

Living Area 


  • Dinette with Computer Workstation on Passenger Side
  • Ultraleather Air Coil Sofa on Driver Side (N/A Bus 40 AP, Bus 37 AP)
  • Ultraleather DE Sofa and Lift TV on Passenger Side (N/A Bus 40 AP, Bus 37 AP)
  • Ultraleather Recliner and Hide-a-Bed Sofa on Driver Side (Bus 40 AP, Bus 37 AP)
  • Fireplace Below Midsection Flat Panel TV (Bus 40 AP, Bus 37 AP)

Living Area Optional

  • Ultraleather U-Shaped Dinette on Passenger Side
  • Theater Seating on Driver Side (N/A Bus 40 AP, Bus 37 AP)
  • Ultraleather Air Coil Sofa and Lift TV on Passenger Side (N/A Bus 40 AP, Bus 37 AP)
  • One Ultraleather Recliner and Lift TV with Optional Fireplace on Passenger Side (N/A Bus 40 AP, Bus 37 AP)
  • Two Ultraleather Recliners on Driver Side (Bus 45 MP, Bus 40 IP)



  • Polished Solid Surface Countertops with Sink Covers
  • Expand-an-island
  • 2 ½" Deep Lighted Toe Kick
  • Single Lever Sink Faucet with Built-in Sprayer
  • Stainless Steel Double Bowl Sink
  • LED Light Above Countertop
  • Stainless Steel Residential Refrigerator
  • Stainless Steel Convection Microwave with Exterior Venting
  • 2-burner Induction Cooktop
  • Galley Soap Dispenser
  • Galley Window
  • Solid Surface Cooktop Cover

Kitchen Optional

  • Drawer-type Dishwasher
  • Wolf Cooktop Upgrade
  • Wooden Refrigerator Panel



  • Memory Foam King Mattress (72" x 80")
  • Bed Comforter with Throw Pillows
  • Solid Surface Nightstand Tops
  • Laundry Hamper
  • Blu-ray System and Satellite Receiver
  • Solar and Privacy Shades
  • Wall Safe
  • USB Receptacles
  • Ceiling Fan
  • Bedroom TV (No Lift TV and No Fireplace)

Bedroom Optional

  • Power Smart King Bed with Memory Foam Mattress
  • No Bedroom Overhead Cabinet with Window
  • Bedroom Overhead Cabinet without Window
  • Bedroom Lift TV with Fireplace
  • Egress Rear Exit (Requires Bedroom Overhead Cabinet)


  • Solid Surface Shower with Glass Door
  • Medicine Cabinet with Vanity Lights
  • Solid Surface Vanity Top and Glass Bowls
  • Skylight and LED Light in Shower
  • Roof Vent Fan
  • Electric Flush Toilet
  • Adjustable Shelves and Vanities

Please see us for a complete list of features and available options!

All standard features and specifications are subject to change.






Tiffin Motorhomes is proud to be one of the few family-owned manufacturers in the industry, and it makes a significant difference in how our company operates versus our competitors. For starters, with the Tiffin name on every coach, building a superior motorhome isn’t just our occupation. It’s a matter of personal pride, a pursuit we have committed our lives to perfecting.