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Tiffin Motorhomes Allegro RED 340 Motor Home Class A - Diesel RVs For Sale

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The Tiffin Motorhomes Allegro RED 340 Class A diesel motorhome is an impeccably appointed and smartly equipped coach that combines luxury, power, and safety all into one affordable RV. With plush Ultraleather six-way power cab seats, an in-dash navigation system, a color back-up monitor, and a CD player with AM/FM stereo, you'll be comfortably in control as you navigate the Allegro RED 340 to its next home base.


Once you make camp, that's when you'll really notice the luxury. There is a flat-panel TV and sound bar for entertainment, a memory foam king mattress for amazing sleep, a fully equipped kitchen that any chef would envy, and handcrafted cabinetry for excellent storage. You also have the ability to create more convenience for yourself by adding the optional central vacuum, in-motion satellite, Wi-Fi booster, and overhead front bunk.


No matter where you choose to stop, it will feel like home in the Tiffin Motorhomes Allegro RED 340 Class A diesel motorhome!

  • Allegro RED 340 38 LL

    Allegro RED 340 38 LL Floorplan Image

    Tiffin Motorhomes Allegro RED 340 Class A diesel motorhome 38 LL highlights: ... more about Allegro RED 340 38 LL


    Sleeps 5
    Slides 2
    Length 39 ft 6 in
    Ext Width 8 ft 5 in
    Ext Height 12 ft 10 in
    Int Height 7 ft
    Interior Color Moondance, Stonewashed
    Exterior Color Euro Blue, Rocky Mountain Brown, Frosted Granite, Scarlet Thunder, 50th Anniversary
    Hitch Weight 5000 lbs
    GVWR 28000 lbs
    Fresh Water Capacity 70 gals
    Grey Water Capacity 65 gals
    Black Water Capacity 50 gals
    Tire Size 255/80R22.5
    Generator 8.0 kw Onan
    Fuel Type Diesel
    Engine Cummins B6.7
    Chassis Freightliner XCS Straight Rail Rear Engine Diesel with Roadwatch
    Horsepower 340 hp
    Fuel Capacity 90 gals
    Wheelbase 252 in
    Available Beds King
    Torque 700 ft-lb
    Refrigerator Type Residential
    Convection Cooking Yes
    Cooktop Burners 3
    Number of Awnings 1
    Axle Weight Front 10410 lbs
    Axle Weight Rear 17590 lbs
    LP Tank Capacity 24 gals
    Water Heater Type Truma Continuous Gas
    AC BTU 30000 btu
    Basement Storage 118 cu. ft.
    TV Info LR Flat Panel TV, BR 32" Flat Panel TV, Exterior TV
    Awning Info Power
    Washer/Dryer Available Yes
    Gross Combined Weight 33000 lbs
    Shower Type Standard
    Electrical Service 50 amp

    Similar Floorplans

Allegro RED 340 Features:

Standard Features (2023)



  • Cummins® B6.7 Engine
  • Allison® 2500 MH 6-speed Automatic Transmission with Lock-up
  • Peak HP 340 HP @ 2,600 RPM
  • Peak Torque (lb — Ft. Max Net) 700 @ 1,600 RPM
  • Straight Rail Chassis Frame
  • Adaptive Cruise Control
  • Collision Mitigation with Forward Warning and Active Braking
  • Electronic Stability Control with Roll Stability Support
  • Automatic Traction Control
  • Air Ride Suspension
  • Full Air Brakes
  • Exhaust Brake
  • Four Aluminum Wheels
  • Tire Pressure Monitoring
  • Air Leveling System

Plumbing and Electrical

  • 8.0 kw Onan® Generator
  • Four 6 V House Batteries
  • 50 Amp Service
  • Two Roof ACs with Heat Pumps (15 K BTUs)
  • 2000 Watt Pure Sine Wave Inverter
  • Tank Level Monitoring System
  • Heated Holding Tank Compartment
  • Prep for Satellite Prep for Solar Panel
  • Spyder® Multiplex System 1
  • Aquaview ShowerMiser
  • Truma® Gas Continuous Water Heater
  • Wi-Fi Booster (Optional)
  • In-Motion Satellite (Optional)

Driver's Compartment

  • Tilt and Telescoping Steering Wheel with Integrated Controls
  • One Drawer in Dash
  • Power Suspended Adjusted Throttle and Brake Pedals
  • Digital Dash Cluster
  • CD Player and AM/FM Stereo
  • Power Solar and Privacy Windshield Shades
  • Fire Extinguisher
  • Ceiling Mounted Speakers
  • In-dash Navigation System
  • Manual Solar and Privacy Shades on Side Windows
  • Six-way Power Driver and Passenger Seats
  • Color Back-up Monitor
  • Overhead Front Bunk (Optional)


  • Fiberglass Front and Rear Caps
  • Front Cap Protective Film
  • Tinted One-piece Windshield
  • Horizontal Mounted Wipers
  • Heated Power Mirrors
  • Exterior Patio Light
  • Power Patio Awning
  •  Patio Side Exterior TV
  • Awning(s) over Slide-outs
  • Double Electric Step
  • Full-body Paint
  • Convenient Access Doors with Gas Shocks
  • Single Handle Lockable Storage Door Latches
  • Charcoal Carpet Cargo Storage Walls
  • Sewer Hose Storage
  • Product Logo
  • Gen 2 Paint Schemes
  • Fast Charge USB Ports for Exterior TV Box
  • Lippert™ On-The-Go™ Ladder (Optional)


  • Soft Touch Vinyl Ceiling
  • Flat-panel TV in Entertainment Center with Soundbar
  • Treated Carpet and Fabrics
  • Ball Bearing Drawer Slides
  • Solar and Privacy Shades
  • Power Roof Vents
  • Smoke Detector
  • Carbon Monoxide Detector
  • LED Lighting
  • LPG Leak Detector
  • BluRay® Player 
  • Residential Refrigerator
  • Manual Step Cover
  • Central Vacuum Cleaner (Optional)
  • Handcrafted Cabinetry
    • Natural Alder
  • Fabric Suites Options
    • Moodance
    • Stonewasher
  • Floor Tiles
    • Seagrass (Matte Finish)
  • Ultraleathers
    • Trail
    • Taupe Hill (Optional)


  • Large Kitchen Sink with Single Lever Faucet
  • Solid Surface Galley Countertop
  • 3-burner Cooktop
  • Convection Microwave
  • Residential Refrigerator
  • Oven with Cooktop/Convection Microwave (Optional)

Dinette/Living Area

  • Ultraleather Booth Dinette/Sleeper on Passenger Side (N/A 38 LL)
  • Ultraleather Booth Dinette/Sleeper on Driver Side (N/A 33 AL)
  • Ultraleather Super Sofa on Driver Side
  • Dinette with Computer Workstation on Passenger Side (Optional 33 AL; N/A 38 LL)
  • Fireplace (Optional)


  • Flat-panel TV
  • Solar/Privacy Shades
  • Memory Foam King Mattress (72" x 80")


  • Medicine Cabinet
  • Fiberglass Shower
  • Roof Vent Fan

See us for a complete list of features and available options!

All standard features and specifications are subject to change.

All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.

Due to the current environment, our features and options are subject to change due to material availability. 


Tiffin Motorhomes Logo

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.