2007 Tiffin Allegro Bus 40QSH – Timeless Luxury and Diesel Power in a Class A Masterpiece

There are motorhomes—and then there are motorhomes built by Tiffin. With decades of commitment to craftsmanship, quality, and customer satisfaction, Tiffin Motorhomes has established itself as a premier name in luxury RVs. The 2007 Tiffin Allegro Bus 40QSH is a standout in their lineup: a Class A diesel pusher that combines top-tier construction, cutting-edge features (for its time), and spacious, residential-style living in a 40-foot chassis that’s built to go the distance.

Whether you’re a full-time RVer, a seasonal traveler, or a luxury enthusiast, the Allegro Bus 40QSH offers a rewarding blend of power, comfort, and elegance. Let’s take a deep dive into everything this motorcoach offers—from its powerful diesel engine to the high-end cabinetry inside—this is a motorhome built for those who demand more from life on the road.

Power and Performance: Built on a Freightliner Chassis

At the heart of the 2007 Allegro 40QSH is a 400-horsepower Cummins ISL turbocharged diesel engine, delivering strong, reliable power for confident highway cruising and mountain ascents alike. Paired with the Allison 3000 MH 6-speed automatic transmission, this diesel pusher offers smooth shifting, excellent torque, and superior fuel efficiency for its size.

The Freightliner Raised Rail chassis gives the coach a solid foundation with enhanced ride quality, better cargo-carrying capacity, and advanced air-ride suspension. With a 10,000-pound towing capacity, you can bring along a toad (tow vehicle), trailer, or even toys like ATVs or motorcycles.

The full air-brake system with anti-lock braking ensures safe, responsive stopping power. And with dual fuel fills, refueling at truck stops is fast and convenient—no matter which side you pull in on.

Exterior Excellence: A Statement in Style and Durability

The Allegro Bus 40QSH turns heads wherever it goes. Tiffin’s signature full-body paint, covered in rich, high-gloss clear coat, ensures a timeless, upscale look that resists fading and peeling. Even over a decade later, these coaches hold their aesthetic appeal due to top-tier paint application and careful craftsmanship.

Highlights include:

• Four slide-outs (two on each side), offering maximum interior space.

• High-gloss fiberglass gel-coat exterior walls with sleek aluminum-framed sidewalls.

• Roof-mounted Girard power awning with wind sensor.

• Powered entry step and integrated handrail.

• One-piece molded fiberglass roof with crowned insulation.

• Dual-pane tinted windows for thermal efficiency and sound insulation.

• Massive pass-through basement storage with side-hinged cargo doors.

• Slide-out tray in basement for easy gear access.

• Roof ladder, rear camera system, docking lights, and full-width mud flap.

This motorhome is as functional as it is elegant—engineered to look good and work hard for years to come.

Interior Living: Luxury That Feels Like Home

As soon as you step inside the 40QSH, you’ll notice the attention to detail and residential feel. High ceilings, top-quality finishes, and expert craftsmanship make this coach feel more like a luxury condo on wheels than a motorhome.

Living Room

The spacious living area is perfect for entertaining or relaxing after a long drive. Thanks to opposing slides, there’s generous floor space and plenty of seating options:

• Ultraleather sleeper sofa on one side.

• Ultraleather Euro recliner with ottoman and workstation.

• Freestanding dinette with chairs, great for meals or mobile work.

Rich solid hardwood cabinetry (often handcrafted oak or cherry), decorative wood trim, and soft-touch vinyl ceilings give the space a timeless feel. High-grade ceramic tile flooring extends from the entry through the galley, creating a seamless and upscale look.

The living room is also equipped with a surround sound system, DVD player, and a flat-screen TV in the front entertainment center, giving you theater-quality audio and video on the road.

Kitchen: A Gourmet Space on the Go

The chef’s kitchen is loaded with features and storage, designed to make cooking a pleasure—not a chore. Whether you're prepping a quick breakfast or a multi-course meal, you'll have everything you need right at your fingertips.

Features include:

• Solid surface countertops with backsplash and integrated sink covers.

• Residential-size convection microwave oven.

• Three-burner propane cooktop with flush-mounted cover.

• Four-door gas/electric refrigerator with ice maker.

• Slide-out pantry with adjustable shelves.

• Overhead cabinetry, deep drawers, and under-sink storage.

From the moment you walk into the galley, the layout feels functional and intuitive. There’s even a built-in spice rack, accent lighting, and custom valances for a polished, designer finish.

Bathroom Suite: Spacious and Private

The 2007 Tiffin Allegro Bus 40QSH boasts a split-bath layout, giving it both privacy and convenience. With the toilet and sink in a private water closet on one side, and a large residential-style shower and vanity on the other, it’s a setup that works wonderfully for couples or guests.

Key features:

• Porcelain toilet with foot flush.

• Vanity sink with solid-surface countertop.

• Medicine cabinet with mirrored door.

• Large neo-angle glass shower with skylight.

• Roof fan and ventilation.

• Washer/Dryer prep (optional units may be included).

This layout makes it easy to maintain privacy while allowing for simultaneous use of different bath areas—perfect for busy mornings or getting ready for an evening out.

Master Bedroom Retreat

At the rear of the coach lies a true residential-style master suite. It features:

• Queen bed (60" x 80") with upgraded mattress (many owners opt for memory foam).

• Dual nightstands with 110V outlets and reading lights.

• Full wardrobe closet with mirrored sliding doors.

• Dresser drawers with large countertops.

• Overhead storage above the bed.

• Flat-screen bedroom TV and pre-wiring for satellite.

• Under-bed storage with gas struts.

The bedroom’s dedicated slide-out increases floor space, and the quiet insulation of the rear cap ensures restful sleep even in bustling campgrounds or at rest stops.

Climate and Electrical Systems

Comfort and convenience are key in the Allegro Bus 40QSH. No matter where the road takes you or what the weather has in store, you’ll stay cozy or cool thanks to the robust HVAC and electrical systems.

• Dual 15,000 BTU A/C units with heat pumps.

• 50-amp electrical service with automatic transfer switch.

• 8.0kW Onan Quiet Diesel generator, capable of powering the entire coach.

• Energy management system to prevent overloading.

• Hydronic heating system (in select models) or gas/electric furnace.

• Inverter to power household outlets when boondocking.

• Multiplex wiring system for simplified electrical operation.

Whether you’re parked in the middle of nowhere or plugged in at a luxury RV resort, you’re never short on power or climate control.

Driving and Cockpit Amenities

The cockpit of the Allegro Bus is driver-focused and loaded with luxury. The Ultraleather captain and co-pilot chairs are fully adjustable, with armrests, lumbar support, and swivel functions for use in the living area when parked.

Driving comfort is further enhanced with:

• Tilt/telescoping smart wheel with cruise and audio controls.

• Power adjustable foot pedals.

• Side-view and rear-view cameras with color monitor.

• Heated power mirrors.

• Air horn, engine brake, and auxiliary start system.

• Dash fans, cup holders, and USB charging ports.

All controls are within reach, with ergonomic design and Tiffin’s trademark clean layout. The panoramic windshield offers unbeatable visibility—perfect for mountain vistas, desert roads, and everywhere in between.

Key Specifications: 2007 Tiffin Allegro Bus 40QSH

• Chassis: Freightliner XC Raised Rail

• Engine: Cummins ISL 400HP turbo diesel

• Transmission: Allison 3000 MH 6-speed automatic

• Length: 40’ 5”

• Height: 12’ 7”

• Width: 101"

• Wheelbase: 266”

• GVWR: 34,320 lbs

• GCWR: 44,320 lbs

• Fuel Capacity: 150 gallons

• Fresh Water Tank: 90 gallons

• Gray Water Tank: 70 gallons

• Black Water Tank: 46 gallons

• Propane: 35.7 gallons

• Sleeping Capacity: Up to 4

• Towing Capacity: 10,000 lbs

Why Choose the Tiffin Allegro Bus 40QSH?

The Allegro Bus is not just another Class A diesel—it’s a culmination of Tiffin’s years of experience, owner feedback, and relentless improvement. The 40QSH floorplan remains one of the most popular for a reason: it offers optimal balance between spaciousness, storage, livability, and driveability.

Here’s what sets it apart:

• Legendary Tiffin construction and customer support.

• Four slide-outs that create incredible interior space.

• Freightliner chassis and Cummins diesel power.

• High-end interior finishes like solid wood cabinetry, tile floors, and Ultraleather seating.

• Residential-style kitchen and master suite.

• Versatile floorplan that feels like home.

Even today, this model rivals many newer RVs in both build quality and livability—making it a smart choice for buyers looking to maximize value without sacrificing comfort.

Ideal for Full-Timers, Snowbirds, or Long-Haul Travelers

Whether you're planning to chase the seasons, live full-time, or explore the national parks in style, the 2007 Allegro Bus 40QSH is ready. It’s been engineered to handle the rigors of long-distance travel while pampering its passengers with the amenities of home.

Final Thoughts

The 2007 Tiffin Allegro Bus 40QSH is more than just a motorhome—it’s a mobile lifestyle built on luxury, performance, and craftsmanship. With its powerful diesel engine, residential comforts, and timeless appeal, it continues to be a favorite among experienced RVers who understand the value of quality.

This is the kind of coach that makes every mile feel like a reward. From the quiet hum of the engine on a highway stretch to the warm glow of interior lighting at a cozy campsite, every journey in the Allegro Bus 40QSH is a trip worth taking.