
Tiffin · Class A · 2027
Tiffin Allegro Bus 40IP
Flagship of Tiffin's diesel range, on the maker's own PowerGlide XC chassis with a Cummins L9 and a 10 kW generator. Four slides, three roof solar panels, a 3,000 W inverter and powered shades are standard, and lithium is an option. Sleeping tops out at four. Tiffin prices through dealers rather than publishing an MSRP.
- Approx. price
- —
- Length
- 41 ft
- Sleeps
- 4
Specifications
Size
- Exterior length
- 41 ft
- Exterior height
- 13.3 ft
- Sleeps
- 4
- Slide-outs
- 4
Tanks and power
- Fresh water
- 96 gal
- Gray water
- 91 gal
- Black water
- 53 gal
- Factory solar
- 600 W
- House battery
- (6) 6V 300Ah extended-cycle AGM (lithium optional)
- Generator
- 10.0 kW Onan Quiet Diesel
Chassis
- Chassis
- Tiffin PowerGlide XC raised-rail rear-engine diesel
- Engine
- Cummins L9 450 HP (X15 605 HP optional on longer plans)
- Fuel
- Diesel
Standard equipment named by the maker
- (3) 200W solar panels standard
- 3,000W pure sine wave inverter
- Powered solar & privacy shades
- Fresh water hose with power reel
Weights
2027 maker figures
- GVWR
- 42,000 lb
- Dry weight (UVW)
- not published
- Occupant + cargo (OCCC)
- not published
- Towing capacity
- not published
Size, to scale
051015202530354045 ft
- Tiffin Allegro Bus 40IP · 41 ft long · 13′4″ tall
Compared with
Similar models
Line photoClass A · Tiffin
Tiffin Open Road Allegro 34PA
- Length
- 36.1 ft
- Sleeps
- 6
- GVWR
- 26,000 lb
- 4 slides
- Tows 4,000 lb
- 70 gal fresh
Price not published
Line photoClass A · Tiffin
Tiffin Phaeton 40IH
- Length
- 41.3 ft
- Sleeps
- 6
- GVWR
- 40,000 lb
- 4 slides
- 600 W solar
- Generator
Price not published
Line photoClass A · Tiffin
Tiffin Allegro Red 33AA
- Length
- 35.2 ft
- Sleeps
- 6
- GVWR
- 38,320 lb
- 4 slides
- Generator
- Tows 10,000 lb
Price not published
Line photoClass C · Tiffin
Tiffin Wayfarer 25RW
- Length
- 25.7 ft
- Sleeps
- 4
- GVWR
- 12,125 lb
- 1 slide
- 200 W solar
- Generator
Price not published
Where these figures come from
Checked against these pages on October 16, 2026. Options and later model-year changes can move any of them.