Key Features of the New 2026 Tiffin Motorhomes Allegro Bus 45 OPP

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: