Tiffin Allegro 40QSH – Diesel Luxury with Caterpillar Power and Legendary Tiffin Quality
When it comes to Class A motorhomes, few names carry as much weight and respect as Tiffin Motorhomes. Built in Red Bay, Alabama, by a family-owned company dedicated to craftsmanship and service, Tiffin coaches are synonymous with quality, innovation, and enduring value. The Allegro 40QSH, equipped with the mighty Caterpillar 350 HP diesel engine, is no exception. This diesel pusher offers unmatched power, exceptional handling, and all the luxury and comfort expected of a high-end Class A motorhome.
With four slide-outs, a spacious rear bedroom, and premium appointments throughout, the Allegro 40QSH is perfect for extended travel, full-time RV living, or luxury getaways. Whether you're crossing the country, touring national parks, or setting up camp in your favorite resort, this model combines residential comfort with diesel-rig power and road presence.
At the heart of the Allegro 40QSH is the Caterpillar C7 7.2L turbo diesel engine, delivering 350 horsepower and a robust 860 lb-ft of torque. Mated to a 6-speed Allison 3000MH automatic transmission, this drivetrain ensures powerful and efficient performance under all conditions—from mountain passes to open highways.
Built on the Freightliner XC Raised Rail chassis, the Allegro offers a smooth ride with rock-solid construction. Air ride suspension and air brakes provide superior comfort and control. This coach is designed to tow up to 10,000 lbs, making it ideal for towing a full-size SUV, trailer, or golf cart.
Chassis and drivetrain highlights:
CAT C7 350 HP turbo diesel engine
Allison 6-speed automatic transmission
Freightliner XC raised-rail chassis
Air suspension and air brakes
10,000 lb towing capacity
Engine brake for downhill control
Aluminum wheels and Michelin tires
This powerhouse setup ensures you’re not just traveling—you’re commanding the road with confidence and authority.
The Allegro 40QSH has a stately, commanding presence on the road. Its full-body paint, bold graphics, and aerodynamic styling make it as attractive as it is functional. The Gel-coat fiberglass exterior resists fading, cracking, and wear, while the one-piece fiberglass roof offers durability and weather resistance.
Exterior features include:
Power patio awning with wind sensor
Additional slide-out awnings and window shades
Side-hinged aluminum basement doors with slam-latch handles
Large pass-through storage with cargo trays
Side and rear-view cameras with in-dash monitor
Heated power side mirrors with integrated turn signals
Ladder to roof access
Dual fuel fills for easy access from either side
Exterior entertainment center with TV and speakers (select models)
Tiffin’s precision fit and finish, combined with extensive insulation, help keep the coach quiet on the road and comfortable in all seasons.
The 40QSH’s layout is one of the most popular and well-executed floorplans Tiffin ever produced. With four slide-outs, the interior opens into a wide, residential-style living space that rivals many small apartments in comfort and layout. The opposing slides in the living area create a massive open concept lounge, while the dual slides in the bedroom provide ample storage and maneuverability.
Interior dimensions:
Overall length: ~40 feet
Height: 12’10”
Width (with slides out): expansive, residential feel
Interior height: 7 feet
No matter where you park, the Allegro 40QSH transforms into a luxurious home on wheels.
Upon entry, you’re greeted by a sprawling living room with residential styling, made even more impressive by opposing slides. Choose between a sleeper sofa, recliner, or dual euro-style chairs depending on the configuration. The tile flooring, hardwood cabinetry, and elegant window treatments give the coach a clean, upscale look.
Living area highlights:
Flexsteel Ultraleather furniture
Pull-out sleeper sofa with air mattress
Swivel recliner or optional euro chair
Solid hardwood cabinetry with raised panel doors
Day/night shades or MCD roller blinds
Fireplace (optional in some trim levels)
Built-in workstation (optional)
The entertainment center includes:
32"–42" flat-screen HDTV on a swivel mount
Surround sound home theater system
Satellite prep and DVD/CD player
Optional exterior TV and entertainment center
The galley kitchen in the 40QSH rivals most homes in functionality and aesthetics. Solid surface countertops, a double-basin sink with covers, and extensive pantry and drawer storage make this space a dream for full-time cooks or road-tripping foodies.
Kitchen features include:
Corian solid-surface countertops and backsplash
3-burner cooktop with oven and flush-mount covers
30” residential convection microwave oven
4-door gas/electric refrigerator with wood inserts (residential fridge optional)
Deep double-basin sink with high-rise faucet
Pull-out pantry with adjustable shelving
Under-cabinet and ceiling lighting
Everything is laid out for ease of use, with soft-close drawers and Tiffin’s hallmark cabinetry quality.
Across from the galley, a booth dinette or optional free-standing table and chairs provide a comfortable place to dine, play games, or work remotely. Large windows bring in natural light, and under-seat storage offers space for placemats, games, or extra linens.
The optional computer workstation model is ideal for RVers working on the road, with built-in drawers and file cabinet space.
The split-bath design gives you both privacy and usability. On one side, you’ll find a spacious shower with skylight, while the enclosed water closet contains the toilet and vanity sink with overhead medicine cabinet.
Bathroom features:
Residential-style fiberglass shower with glass doors
Skylight for natural light and headroom
Porcelain toilet with foot flush
Solid-surface vanity with integrated sink
Large mirror and LED lighting
Upper and lower cabinet storage
Heat and A/C ducting for climate control
Exhaust fans and towel hooks
This bathroom layout ensures convenience whether you're traveling solo or with guests.
The Allegro 40QSH shines in the master bedroom department. Dual slides expand the space, creating room for a queen or optional king-size bed, plus large wardrobes, cabinets, and a full-sized dresser.
Master suite amenities:
Memory foam queen bed with lift-up under-bed storage
Full wardrobe with mirrored sliding doors
Dresser with multiple drawers
24”–32” TV in bedroom
Nightstands with power outlets
Washer/dryer prep (stacked washer/dryer in select models)
Plush wall-to-wall carpet or vinyl plank flooring
A ceiling fan and full blackout shades make it easy to get a restful night’s sleep—no matter where the road takes you.
Tiffin’s insulation and climate systems allow for comfortable travel in a variety of weather conditions.
Dual 15,000 BTU A/C units with heat pumps
35,000–40,000 BTU furnace
In-floor ducted heating and cooling
Ceiling fan in bedroom
Thermostat control in multiple zones
Additionally, heated tanks and water lines ensure four-season capability, while dual-pane windows help with noise and insulation.
The Allegro 40QSH is built for independent travel, offering self-sufficiency for boondocking or luxury hookups alike.
Electrical system:
50-amp service with power cord reel
2,000-watt inverter
Onan 8.0kW Quiet Diesel generator
Battery bank with isolation switch and solar prep
Energy management system
Water and plumbing:
90-gallon freshwater tank
70-gallon gray water tank
50-gallon black tank
10-gallon gas/electric water heater
Whole-coach water filtration
Outside shower and black tank flush
With these systems, you can camp off-grid for days or plug in at a resort with everything running at full capacity.
Tiffin's dedication to storage solutions is evident throughout the 40QSH.
Interior storage:
Overhead cabinets above sofa, dinette, and bed
Deep drawers in kitchen and bathroom
Full wardrobe in bedroom
Linen closet and pantry space
Exterior storage:
Full pass-through basement compartments
Side-hinged doors with slam-latch handles
Rotocast molded compartments for durability
Optional sliding cargo trays
| Feature | Value |
|---|---|
| Engine | CAT C7 7.2L Turbo Diesel |
| Horsepower | 350 HP |
| Torque | 860 lb-ft |
| Transmission | Allison 6-speed Automatic |
| Chassis | Freightliner XC |
| Length | ~40 ft |
| Height | 12’10” |
| GVWR | 32,000 lbs |
| Towing Capacity | 10,000 lbs |
| Fresh Water Capacity | 90 gallons |
| Gray Water Capacity | 70 gallons |
| Black Water Capacity | 50 gallons |
| Fuel Capacity | 100 gallons (diesel) |
| LP Capacity | 35 gallons |
| Sleeping Capacity | 4–6 |
This coach is ideal for:
Full-time RVers needing comfort, space, and durability
Retirees or couples who want long-term travel ability
Diesel fans looking for proven CAT reliability
Families seeking spacious living and sleeping
Luxury-minded travelers who appreciate residential finishes and quality
The Tiffin Allegro 40QSH with the CAT 350 HP diesel engine is more than a motorhome—it’s a long-term investment in luxury travel. With its powerful drivetrain, spacious layout, and premium construction, this Class A diesel pusher is ready to tackle coastlines, mountains, and everything in between.
Whether you’re hitting the road full-time or looking for the ultimate way to vacation in comfort, the 40QSH offers the ideal mix of performance, prestige, and peace of mind. Backed by Tiffin’s legendary support and engineering, this coach is a smart choice for travelers who refuse to compromise.
Information and features are based on manufacturer data and may vary from the actual unit. Sonny’s RVs is not responsible for errors or omissions. Prices and availability may change without notice. Buyers must verify all details, features, and conditions with a Sonny’s RVs sales representative before purchase.
| Stock # | U07-8928 |
| Location | Sonnys RVS |
| Year | 2007 |
| Make | TIFFIN |
| Model | ALLEGRO |
| Trim | 40QSH |
| Condition | USED |
| Status | In Stock |
Tiffin Allegro 40QSH – Diesel Luxury with Caterpillar Power and Legendary Tiffin Quality
When it comes to Class A motorhomes, few names carry as much weight and respect as Tiffin Motorhomes. Built in Red Bay, Alabama, by a family-owned company dedicated to craftsmanship and service, Tiffin coaches are synonymous with quality, innovation, and enduring value. The Allegro 40QSH, equipped with the mighty Caterpillar 350 HP diesel engine, is no exception. This diesel pusher offers unmatched power, exceptional handling, and all the luxury and comfort expected of a high-end Class A motorhome.
With four slide-outs, a spacious rear bedroom, and premium appointments throughout, the Allegro 40QSH is perfect for extended travel, full-time RV living, or luxury getaways. Whether you're crossing the country, touring national parks, or setting up camp in your favorite resort, this model combines residential comfort with diesel-rig power and road presence.
At the heart of the Allegro 40QSH is the Caterpillar C7 7.2L turbo diesel engine, delivering 350 horsepower and a robust 860 lb-ft of torque. Mated to a 6-speed Allison 3000MH automatic transmission, this drivetrain ensures powerful and efficient performance under all conditions—from mountain passes to open highways.
Built on the Freightliner XC Raised Rail chassis, the Allegro offers a smooth ride with rock-solid construction. Air ride suspension and air brakes provide superior comfort and control. This coach is designed to tow up to 10,000 lbs, making it ideal for towing a full-size SUV, trailer, or golf cart.
Chassis and drivetrain highlights:
CAT C7 350 HP turbo diesel engine
Allison 6-speed automatic transmission
Freightliner XC raised-rail chassis
Air suspension and air brakes
10,000 lb towing capacity
Engine brake for downhill control
Aluminum wheels and Michelin tires
This powerhouse setup ensures you’re not just traveling—you’re commanding the road with confidence and authority.
The Allegro 40QSH has a stately, commanding presence on the road. Its full-body paint, bold graphics, and aerodynamic styling make it as attractive as it is functional. The Gel-coat fiberglass exterior resists fading, cracking, and wear, while the one-piece fiberglass roof offers durability and weather resistance.
Exterior features include:
Power patio awning with wind sensor
Additional slide-out awnings and window shades
Side-hinged aluminum basement doors with slam-latch handles
Large pass-through storage with cargo trays
Side and rear-view cameras with in-dash monitor
Heated power side mirrors with integrated turn signals
Ladder to roof access
Dual fuel fills for easy access from either side
Exterior entertainment center with TV and speakers (select models)
Tiffin’s precision fit and finish, combined with extensive insulation, help keep the coach quiet on the road and comfortable in all seasons.
The 40QSH’s layout is one of the most popular and well-executed floorplans Tiffin ever produced. With four slide-outs, the interior opens into a wide, residential-style living space that rivals many small apartments in comfort and layout. The opposing slides in the living area create a massive open concept lounge, while the dual slides in the bedroom provide ample storage and maneuverability.
Interior dimensions:
Overall length: ~40 feet
Height: 12’10”
Width (with slides out): expansive, residential feel
Interior height: 7 feet
No matter where you park, the Allegro 40QSH transforms into a luxurious home on wheels.
Upon entry, you’re greeted by a sprawling living room with residential styling, made even more impressive by opposing slides. Choose between a sleeper sofa, recliner, or dual euro-style chairs depending on the configuration. The tile flooring, hardwood cabinetry, and elegant window treatments give the coach a clean, upscale look.
Living area highlights:
Flexsteel Ultraleather furniture
Pull-out sleeper sofa with air mattress
Swivel recliner or optional euro chair
Solid hardwood cabinetry with raised panel doors
Day/night shades or MCD roller blinds
Fireplace (optional in some trim levels)
Built-in workstation (optional)
The entertainment center includes:
32"–42" flat-screen HDTV on a swivel mount
Surround sound home theater system
Satellite prep and DVD/CD player
Optional exterior TV and entertainment center
The galley kitchen in the 40QSH rivals most homes in functionality and aesthetics. Solid surface countertops, a double-basin sink with covers, and extensive pantry and drawer storage make this space a dream for full-time cooks or road-tripping foodies.
Kitchen features include:
Corian solid-surface countertops and backsplash
3-burner cooktop with oven and flush-mount covers
30” residential convection microwave oven
4-door gas/electric refrigerator with wood inserts (residential fridge optional)
Deep double-basin sink with high-rise faucet
Pull-out pantry with adjustable shelving
Under-cabinet and ceiling lighting
Everything is laid out for ease of use, with soft-close drawers and Tiffin’s hallmark cabinetry quality.
Across from the galley, a booth dinette or optional free-standing table and chairs provide a comfortable place to dine, play games, or work remotely. Large windows bring in natural light, and under-seat storage offers space for placemats, games, or extra linens.
The optional computer workstation model is ideal for RVers working on the road, with built-in drawers and file cabinet space.
The split-bath design gives you both privacy and usability. On one side, you’ll find a spacious shower with skylight, while the enclosed water closet contains the toilet and vanity sink with overhead medicine cabinet.
Bathroom features:
Residential-style fiberglass shower with glass doors
Skylight for natural light and headroom
Porcelain toilet with foot flush
Solid-surface vanity with integrated sink
Large mirror and LED lighting
Upper and lower cabinet storage
Heat and A/C ducting for climate control
Exhaust fans and towel hooks
This bathroom layout ensures convenience whether you're traveling solo or with guests.
The Allegro 40QSH shines in the master bedroom department. Dual slides expand the space, creating room for a queen or optional king-size bed, plus large wardrobes, cabinets, and a full-sized dresser.
Master suite amenities:
Memory foam queen bed with lift-up under-bed storage
Full wardrobe with mirrored sliding doors
Dresser with multiple drawers
24”–32” TV in bedroom
Nightstands with power outlets
Washer/dryer prep (stacked washer/dryer in select models)
Plush wall-to-wall carpet or vinyl plank flooring
A ceiling fan and full blackout shades make it easy to get a restful night’s sleep—no matter where the road takes you.
Tiffin’s insulation and climate systems allow for comfortable travel in a variety of weather conditions.
Dual 15,000 BTU A/C units with heat pumps
35,000–40,000 BTU furnace
In-floor ducted heating and cooling
Ceiling fan in bedroom
Thermostat control in multiple zones
Additionally, heated tanks and water lines ensure four-season capability, while dual-pane windows help with noise and insulation.
The Allegro 40QSH is built for independent travel, offering self-sufficiency for boondocking or luxury hookups alike.
Electrical system:
50-amp service with power cord reel
2,000-watt inverter
Onan 8.0kW Quiet Diesel generator
Battery bank with isolation switch and solar prep
Energy management system
Water and plumbing:
90-gallon freshwater tank
70-gallon gray water tank
50-gallon black tank
10-gallon gas/electric water heater
Whole-coach water filtration
Outside shower and black tank flush
With these systems, you can camp off-grid for days or plug in at a resort with everything running at full capacity.
Tiffin's dedication to storage solutions is evident throughout the 40QSH.
Interior storage:
Overhead cabinets above sofa, dinette, and bed
Deep drawers in kitchen and bathroom
Full wardrobe in bedroom
Linen closet and pantry space
Exterior storage:
Full pass-through basement compartments
Side-hinged doors with slam-latch handles
Rotocast molded compartments for durability
Optional sliding cargo trays
| Feature | Value |
|---|---|
| Engine | CAT C7 7.2L Turbo Diesel |
| Horsepower | 350 HP |
| Torque | 860 lb-ft |
| Transmission | Allison 6-speed Automatic |
| Chassis | Freightliner XC |
| Length | ~40 ft |
| Height | 12’10” |
| GVWR | 32,000 lbs |
| Towing Capacity | 10,000 lbs |
| Fresh Water Capacity | 90 gallons |
| Gray Water Capacity | 70 gallons |
| Black Water Capacity | 50 gallons |
| Fuel Capacity | 100 gallons (diesel) |
| LP Capacity | 35 gallons |
| Sleeping Capacity | 4–6 |
This coach is ideal for:
Full-time RVers needing comfort, space, and durability
Retirees or couples who want long-term travel ability
Diesel fans looking for proven CAT reliability
Families seeking spacious living and sleeping
Luxury-minded travelers who appreciate residential finishes and quality
The Tiffin Allegro 40QSH with the CAT 350 HP diesel engine is more than a motorhome—it’s a long-term investment in luxury travel. With its powerful drivetrain, spacious layout, and premium construction, this Class A diesel pusher is ready to tackle coastlines, mountains, and everything in between.
Whether you’re hitting the road full-time or looking for the ultimate way to vacation in comfort, the 40QSH offers the ideal mix of performance, prestige, and peace of mind. Backed by Tiffin’s legendary support and engineering, this coach is a smart choice for travelers who refuse to compromise.
| General | |
|---|---|
| Class | Class A Motorhome |
| Other Specifications |
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| Hot Deals |
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