Tiffin Allegro Bus 40IP vs Newmar Ventana 4037
The difference that matters
Similar size, similar mission, different emphasis. The Allegro Bus 40IP is 41 ft on Tiffin's PowerGlide XC chassis with a 450 hp Cummins L9 and a 42,000 lb GVWR. The Ventana 4037 is 40.8 ft on a tag-axle Freightliner with a 400 hp Cummins 8.9 L, a 45,000 lb GVWR, 9,100 lb of cargo capacity and a 15,000 lb tow rating.
The Tiffin is the better solar coach, with three 200 W panels against a 10 W chassis panel on the Ventana, a 10.0 kW Onan diesel against an 8.0 kW, and four slides against three. It carries six 6 V AGM batteries with lithium optional, and its gray tank is bigger at 91 gal against 75.
The Ventana has eight house batteries totaling 800 Ah and a 3,000 W pure-sine inverter, the same rating as the Tiffin's. It is a couples' entertaining plan with a king suite, a midship half bath and a gourmet kitchen, and sleeps five to the Tiffin's four. It also sits 0.4 ft lower.
- Tiffin Allegro Bus 40IP
- Full-timers who park off grid and want roof solar, a bigger generator and four slides.
- Newmar Ventana 4037
- Frequent hosts towing a heavy vehicle, as a couple, wanting a tag axle and a half bath for guests.
Weights
Weights
2027 maker figures
- GVWR
- 42,000 lb
- Dry weight (UVW)
- not published
- Occupant + cargo (OCCC)
- not published
- Towing capacity
- not published
Weights
2027 maker figures
- GVWR
- 45,000 lb
- Dry weight (UVW)
- 35,900 lb
- Occupant + cargo (OCCC)
- 9,100 lb
- Towing capacity
- 15,000 lb
9,100 lb between brochure dry weight and GVWR. Water (8.3 lb a gallon), food, gear, propane and dealer-added options all come out of it.
Spec for spec
| Tiffin Allegro Bus 40IP | Newmar Ventana 4037 | |
|---|---|---|
| Dry weight (UVW) | — | 35,900 lb |
| GVWR | 42,000 lb | 45,000 lb |
| Cargo capacity (CCC / OCCC) | — | 9,100 lb |
| GVWR minus dry weight | — | 9,100 lb |
| Towing capacity | — | 15,000 lb |
| Exterior length | 41 ft | 40.8 ft |
| Exterior height | 13.3 ft | 12.9 ft |
| Sleeps | 4 | 5 |
| Slide-outs | 4 | 3 |
| Fresh water | 96 gal | 105 gal |
| Gray water | 91 gal | 75 gal |
| Black water | 53 gal | 55 gal |
| Factory solar | 600 W | 10 W |
| House battery | (6) 6V 300Ah extended-cycle AGM (lithium optional) | 8 house batteries, 800 Ah total (standard) |
| Generator | 10.0 kW Onan Quiet Diesel | Cummins Onan 8.0 kW diesel |
| Chassis | Tiffin PowerGlide XC raised-rail rear-engine diesel | Freightliner |
| Engine | Cummins L9 450 HP (X15 605 HP optional on longer plans) | Cummins 8.9L, 400 hp; Allison 6-speed |
| Fuel | Diesel | Diesel |
Bold is the lighter or larger figure. A dash means the maker does not publish it.
To scale
- Tiffin Allegro Bus 40IP · 41 ft long · 13′4″ tall
- Newmar Ventana 4037 · 40.8 ft long · 12′11″ tall
Tiffin Allegro Bus 40IP
Full spec sheet, sources →
Newmar Ventana 4037
Full spec sheet, sources →