Tiffin · Class A
Tiffin Allegro Bus
The Allegro Bus is a Class A diesel pusher that sits just below the Zephyr on Tiffin's model list. Recent model years run from about 38 to 45 feet on the PowerGlide chassis with a 450-horsepower Cummins L9, and a 605-horsepower Cummins X15 has been offered on 45-foot floorplans. Tiffin's online brochures cover 2005 to 2027.
Key facts re-checked. Owners, dates and prices were re-checked against their sources. A full second review is still to come.
All the years
Pick a model year
| Year | Configuration | Length | Chassis | Engine | Price when new |
|---|---|---|---|---|---|
| 2027 | 36 AP | 38.17 ft | PowerGlide XC raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2027 | 40 IP | 41 ft | PowerGlide XC raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2027 | 45 BP | 45 ft | PowerGlide XC raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2027 | 45 OPP | 45 ft | PowerGlide XC raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2027 | Model-year overview | — | PowerGlide XC raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2026 | 36 AP | 38.17 ft | PowerGlide XC raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2026 | 40 IP | 41 ft | PowerGlide XC raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2026 | 45 OPP | 45 ft | PowerGlide XC raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2026 | Model-year overview | — | PowerGlide XC raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2025 | 35 CP | 37.42 ft | PowerGlide rear-engine diesel | Cummins L9 · 450 hp | — |
| 2025 | 40 IP | 41 ft | Freightliner PowerGlide XC raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2025 | 45 FP | 45 ft | PowerGlide rear-engine diesel | Cummins L9 · 450 hp | — |
| 2025 | 45 OPP | 45 ft | PowerGlide rear-engine diesel | Cummins L9 · 450 hp | — |
| 2025 | Model-year overview | — | — | Cummins L9 · 450 hp | — |
| 2024 | 35 CP | 37.42 ft | Tiffin PowerGlide raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2024 | 40 IP | 41 ft | Tiffin PowerGlide raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2024 | 45 FP | 45 ft | Tiffin PowerGlide raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2024 | 45 OPP | 45 ft | Tiffin PowerGlide raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2024 | Model-year overview | — | Tiffin PowerGlide raised-rail rear-engine diesel | Cummins L9 · 450 hp | — |
| 2023 | 45 FP | 45 ft | Tiffin PowerGlide rear-engine diesel | Cummins L9 · 450 hp | — |
| 2023 | Model-year overview | — | — | — | — |
| 2022 | Model-year overview | — | — | — | — |
| 2021 | Model-year overview | — | — | — | — |
| 2020 | Model-year overview | — | — | — | — |
| 2019 | Model-year overview | — | — | — | — |
| 2018 | Model-year overview | — | — | — | — |
| 2017 | Model-year overview | — | — | — | — |
| 2016 | Model-year overview | — | — | — | — |
| 2015 | Model-year overview | — | — | — | — |
| 2014 | Model-year overview | — | — | — | — |
| 2012 | Model-year overview | — | — | — | — |
| 2011 | Model-year overview | — | — | — | — |
| 2010 | Model-year overview | — | — | — | — |
| 2009 | Model-year overview | — | — | Cummins ISL | — |
| 2008 | Model-year overview | — | — | — | — |
| 2007 | Model-year overview | — | — | — | — |
| 2006 | Model-year overview | — | — | — | — |
| 2005 | 38 DP | 38.92 ft | Freightliner | Cummins | — |
| 2005 | 38 TGP | 38.92 ft | Freightliner | Cummins | — |
| 2005 | 40 DP | 40.33 ft | Freightliner | Cummins | — |
| 2005 | 40 QDP | 40.33 ft | Freightliner | Cummins | — |
| 2005 | 40 TSP | 40.33 ft | Freightliner | Cummins | — |
| 2005 | 42 QDP | 42.5 ft | Freightliner | Cummins | — |
| 2005 | Model-year overview | — | Freightliner | Cummins | — |
A dash means that value has not been documented yet. Length, chassis and engine can change by floorplan inside one model year, so open a year for the full detail.
The story of the model
Allegro Bus history
Tiffin's company history says the 1990s saw the rise of some of its best-known models, including the Allegro Bus, but it does not give the first model year.
The 2005 brochure, the oldest in Tiffin's online library, shows six floorplans from about 39 to 42.5 feet on a Freightliner chassis with a Cummins engine. The 2009 brochure describes seven floorplans from 36 to 43 feet with a Cummins ISL engine.
By the 2024 model year the Allegro Bus rode on Tiffin's PowerGlide raised-rail chassis with a 450-horsepower Cummins L9 as standard and a 605-horsepower Cummins X15 as an option on the 45-foot floorplans. Floorplan names changed for 2026, and the 2027 sheet lists four floorplans: 36 AP, 40 IP, 45 BP and 45 OPP.
A March 5, 2024 company post describes the Allegro Bus 45 BTP, a limited edition named for founder Bob Tiffin and limited to 82 coaches. The post gives no model year, so it has no year record here.
- 2005Oldest brochure in Tiffin's library
Six floorplans on a Freightliner chassis with a Cummins engine and Allison 3000 MH transmission. Source ↗
- 2009Seven floorplans, 36 to 43 feet
The 2009 brochure describes a Cummins ISL engine, a six-speed automatic and quad slide-outs. Source ↗
- 2024605-horsepower option
The 2024 brochure lists a Cummins X15 option with an Allison 4000 MH on the 45-foot floorplans. Source ↗
- 2024Limited edition of 82
A March 5, 2024 company post describes the Allegro Bus 45 BTP, a limited edition named for founder Bob Tiffin and limited to 82 coaches. The post gives no model year. Source ↗
- 2026New floorplan list
The 2026 sheet lists the 36 AP, 40 IP and 45 OPP on the PowerGlide XC chassis. Source ↗
Brochures and sources
- Tiffin model lineup ↗
- Tiffin brochure library ↗ — Brochures and specification sheets by model and year, 2005 to 2027.
- PowerGlide chassis page ↗ — Tiffin's description of the chassis used under the Phaeton, Allegro Bus and Zephyr.
- 2023 Allegro Bus 45 FP floor plan spotlight ↗ — Tiffin blog post describing one 2023 floorplan.
Links open the original page. Facts are checked against these sources; tell us if you find one that is out of date.
Tiffin Allegro Bus coaches for sale
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