The 2026 Tiffin Motorhomes Allegro Bus 45 OPP represents the pinnacle of luxury diesel motorhome living. At a full 45 feet long with four slide-outs, this flagship coach delivers a true residential experience combined with industry-leading performance and craftsmanship.

Built on Tiffin’s exclusive PowerGlide raised-rail chassis and powered by a 450-horsepower Cummins diesel engine, the 45 OPP offers smooth handling, powerful towing, and long-distance confidence for serious travelers.

Inside, the quad slide-out design creates an open, inviting space perfect for entertaining or relaxing. High-end finishes, panoramic windows, and premium furnishings give the coach a luxury residential feel.

With multiple seating options and a spacious living area, this motorhome is designed for comfort whether you're hosting guests or enjoying quiet evenings on the road.

The Allegro Bus 45 OPP features a fully equipped kitchen built for real cooking:

This space is ideal for everything from quick meals to full-course dinners.

The bath-and-a-half layout provides added convenience for both owners and guests, while the standout walk-in closet in the master suite sets this floorplan apart.

The rear suite includes a king bed, expansive wardrobe storage, and a private full bathroom—creating a true retreat on the road.

With a tag axle, air ride suspension, and advanced driver-assist features, the Allegro Bus 45 OPP delivers exceptional stability and control.

Features like hydronic heating, heated tile floors, large tank capacities, and a powerful generator make it ideal for full-time RV living or extended luxury travel.